you my mate are an absolute legend... this video helped me fixed the no start problem on my e30 and get her home without needing a tow. thank you so much for your time and effort in making this video... a visual is better than the haynes manual all day long every day!!!
DUDE! This was an EPIC way to track down my "out of nowhere" no start issue after installing my suspension and brakes! It ended up being spark for me because I'd forgotten that the hood slammed down on the car while it was in the air and there was a board resting on top of my coil wire. When the hood slammed down, it broke the cable off of the coil cable going to my distributor and I didn't even realize it until I went to press down on the coil wire and realized it was broken off inside of the boot and I could feel it. I repaired the wire and it started right up! Thanks for the tutorial!
Dude thank you so much! Turns out my connector on my fuel pump was loose but this helped me save money before I started getting relays and new pumps! First Bmw I’ve owned and definitely learning lol
Thank you for this video man! I just picked up an 87 325i with a no start issue and after watching your video and doing what you said it ended up being the fuel pump relay! So thank you again sir!
Thank You!!! Luckily mine started after jumping the fuel pump and main relay. Wish I would've known this when mine stalled while driving, it could've saved me $150 I paid for a tow truck... sigh, but now keeping the wire in my glove box in case it happens again.
My e30 m20 ran prior to replacing the head. Engine and ign timing confirmed. Installed a 284 cam. I have no start. I swapped the tps plugs to rule out mix up. I guess time to use your diagnostics..thanks for this vid..will report back with findings.
Great informative visual video that is very helpful and well presented Thank you for sharing. Currently I am looking at an older E30 with a 7 Pin Fuel pump Relay !!
You good on how to Splaine to look for a problem and find it appreciated this video and look forward to see if I can get help to start my E30 1988 thank you, been parking for a year and a half no clicking that all. Any help I appreciate it. 🙏🙏🙏. This video a help me 90% to be close to start my E30. Thank you again...-:))
Hey dude nice video. I’m having a starting problem with my 1987 325i. I’ve had the car for 20 years and just replaced the head from a failed timing belt. I got it all going and was driving about 2 miles and the engine shut off. I wired the fuel pump relay and it works. Got a new fuel pump relay and it worked for a full day (50 miles) then erratic high idle (2000 rpm) and it shut off again. Wired the fuel pump relay again and it has been running for a few days like that. When I wire the fuel pump relay the fuel pump doesn’t come on like yours did in the video when you wired the fuel pump relay. It does work though cause it fires right up with it wired. I also have a three blink check engine light come on that means the coolant temperature sensor is faulty. New one is on the way. Ohm meter wasn’t consistent on the cts on the thermostat housing. Been a three month journey getting this Beamer back together and she runs good just a few things to be addressed. I hope I don’t have the camshaft and crankshaft position sensors backwards like you talked about. The metal clip facing upwards and positioned on the drivers side of the two connections is the crankshaft sensor yah? It’s raining so I’ll check them first thing. Any help would be awesome.
Yes that is the crank position sensor and induction sensor, if they are swapped it wouldnt run at all so thats not your issue. I would inspect the wiring to the fuel pump and all grounds. Its also possible that the fuel pump itself is going out and that would explain it working intermittently and could also cause the erratic idle.
Followed all your steps to check why my 1990 E30 would not start. Seen that I didn't have any fuel flowing so I used the jumper wire to get the pump to run and it worked but the power wires to the pump were loose so it only worked part time. I had to wiggle them to get a connection. Checked the CPS, checked the DME relay and everything was good but still no fuel. Even with the wires contacting the pump. The last owner said "the filter was clogged" so I pulled it. Still no flow. Come to find out the wires to the pump were crossed! It would get power but the flow was backwards.
@@CARSTUDIOYT can you search me Lee Dang New Orleans, la. There are a million car studios. I’ve replaced my cps just now it started. Then when I pressed the clutch it died… wouldn’t start… then it started… pressed in clutch… didn’t die… turn in a/c, pressed in clutch it died. Now it won’t start. Changed fuel pump relays, dme relay, cps. Help!
@@CARSTUDIOYT I figured it out. Bet you never heard this one. I just revamped my entire ac system… how does this relate to an ecu problem? The low side line in the glove wasn’t insulated. Opened up the ecu and had water damage. I have wrapped the line and ordered a new 173 ecu upgrading from 153 so I can have a stomp test and idle loop!
Getting spark and engine starts with starting fluid. I have Fuel pressure at the fuel rail. It seems like the injectors aren’t firing. Checked the connection under the intake and it looks good and is hooked up. Any ideas?
I change both fuel pumps, fuel filter. Check fuses and relay. Relays have power but fuse 11 have no power at all time. Need advice were too check and fixing problems. Thank you.
Digital Gamer, I have an 86 325es I believe I need to replace my DME also. Could you point me in the right direction as to where I should purchase it from? Also the part number I was given is 12-14-0-008-963 but I also came across a part number 0261-200-027 does any of those sound familiar to you?
Hello, I am having a very similar issue right now, my 1987 325e that I just replaced the external fuel pump and filter, and reference and speed sensors, it will start up and idle for a few minutes until it starts bogging down and stalling. It will then start up for a second and then stall again. I still need to test the in-tank fuel pump and fuel pressure, but just wanted to see if you had any input!!
Id start with checking relays then i would check the crank position sensor, make sure you replace with oem only. A bad cps will cause no spark or fuel on an M42 as well
@@CARSTUDIOYT i did replace crank sensor ..and did the test for relay as ur video connect no 87 and 30 with wire and i heard the fuel working ...does it mean that relay is not working ?
@@ahmedibrahem2305 not necessarily, something else could be telling the relay not to kick on. Did you try to start it with the main relay bridged like that? If it doesnt have spark or fuel then it would be you main relay thats the issue or cps or dme. If the relay is good then something else is not telling it to kick on.
Very good video and helpful. I did all the tasks shown here, but mi E30 is still having hard to start only and only in a particular weather condition; when is humid in the morning. After it starts, anything can´t prevent it to start normal again. In a dry weather it starts relatively normal, even in the morning. But it went to worst by the years, because I remember that a few years before, it started very fast. I even changed the battery to test the fuel pump; with 12.7 Volts, and anyway, is still starting very hard and after cranking a long time, before killing the starter motor or the battery, weakly the combustion appears from low revolutions increasing to normal. Still I can hear that not all cylinders are working. After around 2 minutes since it started, the engine begins to run normal, without the sensation that one spark plug is gone or a cylinder is not combusting. Very weird.
The fact that the weather has an affect on how it starts has me thinking you need to check 3 things: Your distributor cap and rotor button, moisture can settle inside if the seal is deteriorated which would cause a rough cold start til it evaporated. I would also check your coolant temp sensor, an easy test for it is to just unplug it on a cold start and see if it starts easier, or after it has started and is idling rough you can unplug it and see if the idle smooths out. It is the blue sensor on the thermostat housing, very easy to get to.
Hi, I have crank no start issue. I put a jumper wire in the fuel relay slot like in this video and my car starts up. So I went and replaced my fuel relay with a brand new one but the car still won't start. What should I check now. Would really appreciate any help from anyone. Thanks
man whats your part number on that fuel pump relay and how do I get one? also the mains relay how do I also source one??? I have a 1987 e30 euro spec... I sorta seem to find the fuel pump relay but that Mains one how man?
how many prongs is your DME relay???? what exactly is it??? on my 1987 E30 235e I don't see this type of setup... I see a 4 pin 30a on the DME I see a 5pin 30a on the fuel pump and then a 4 pin 30a on the oxygen .... do you understand what im getting at man????
Hi I bought a 1992 318i Convertible it's been sitting since 2010 PO that I bought from said he had it running, it did not start when I bought it Fuse 11 does not pop Swapped all relays from a running e30 (even tested my old relays in my running e30, '90 325is it starts up no problem with both sets) Swapped in a new fuel pump 2x (I never hear it prime) --> I don't hear the fuel pump when I jump the relays either --> There was pressure in the fuel pump line when I swapped fuel pumps the second time Swapped DME from a running 318is no start from me New Crankshaft Position Sensor, same issue Also swapped back to old CPS in case new aftermarket one was not running well PO put too much oil in the car but I drained it and did a compression test Compression Test, all 4 cylinders ~218-226psi It doesn't leak oil either I didn't think it was the fusible link since it cranks and has spark. Any leads would be helpful thank you!
If youre not hearing the fuel pump prime its is more than likely a cps issue. I had an e36 one time with the m42 (same as yours) and had the same issue. You CANNOT use an aftermarket cps, 9/10 they do not work. Put the original back in and just run straight power to the fuel pump and see if it starts. It could just be a wiring issue.
What part # is the CPS sensor? Got an 85' 325e cranks, no spark with all relays good and spark plugs/coil/distributor new so I'm thinking CPS. I can't find the genuine BMW sensor online and was wondering the part #. Online seems confusing with crankshaft and camshaft.
ETA cars are a little different. most if not all of them have the cps on back of the engine and use the flywheel for reference rather than the crank pulley like I cars. I dont have a part number for one but fcpeuro or pelican parts are good sources for oem parts.
Do you know if the e30 318i has a cps sensor? It has the 4 cylinder m10 engine. Can locate the cps on this engine and i cant find anything on it online.
I have a problem with my 325e 86 it only starts accelerating at half or full throttle if I stop accelerating it turns off install a new fuel pump from the tank and the fuel pump from the outside new fuel filter clean inyectors. check everything in your video but I can't get it to stay on without accelerating could you help me
Hey bud, I recently pulled the motor on my 1986 325. When I put the motor back in it wants to crank with no fire. The relays are getting power along with the fuel pump but the injectors are not. Just wondering if you have any guesses except CPS
I need help !!! I have a 86 ES E30 with jumper cables on, the horn, Radeo, lights gauges all work. I know I have fuel 1 line above the valve cover has a hair line crack in the hose lol and it drips fuel while attempting to start it. But all I keep getting out of the car is a slow motion cranks. Car history I’m the 3rd owner purchased the car from a 80yr old man it’s completely stock. I’ve owned it for months I just want to hear it turn on !!!!!!! Please help.
Check for spark first and then if it has spark see if a little starting fluid will get it to fire then you know its just lacking fuel. But be sure to inspect timing belt before starting if it has sat for years.
Hai my name is Ben, i hv BMW E30 MY PROBLEM IS MY CAR CRANK OVER BUT WONT FIRE UP, i hv fuel, i hv spark, i check fuel pressure up to 30 PSI , IM NOT SURE IS THAT ENOUGH FUEL PRESSURE TO EPEN UP FUEL INJECTORS? The only think the car can fire up if i pinched the fuel return line. Can you give me a hints what seem to be the problem?
It should have 40-50 psi at the fuel rail but i have ran these cars with a small 8 psi pump before just to test the engine. Check you C101 connector under the intake if its a late model. Id also see if it will run with starting fluid so you can narrow it down to a fuel/injector issue.
well the car is run when i pinched the return line , is that possible my fuel pump dont put enough pressure? because the car only have 29 PSI , ACCORDING TO YOU 40 UP TO 50 PSI@@CARSTUDIOYT
ii spray with starting fluid the car start, do you think the injectors problem? and again if the injector problem why the car start if i pinced the return line? thank you for your time to teply my message i relally appreciated..@@CARSTUDIOYT
Need to pull the fuel line off the fuel rail and put it into a water bottle and crank the engine over. If you’re getting fuel check your spark next. If you have both of those then check your compression. Its possible the timing belt jumped a tooth or more or snapped.
Great vid! My 325 eta cranks, has fuel, but no spark. Measured 12V at the coil w/ ignition on. Coil resistance is within spec. What could be the issue? CPS? Main relay?
I would start by jumping the main relay like I do in the video and with it jumped, try to start the car. If it starts then its the main relay and if it doesnt I would suspect the CPS. On an ETA however, some if not all are a little different than M20B25 cars. If your cps isnt on the front like mine then its on the back of the block and uses the flywheel as reference.
Mine having the same issue I did all wat you guys did everything is good I got fuel and everything no spark and there’s no cps on the passenger side there’s one on the driver but not bolted on just clips on to a bracket
I replaced my dme but the car still doesn’t wanna start found out my dme was burnt i spray started fluid in throttle body when I have it wide open throttle I crank like it wants to start. But it doesn’t and I’m gettin fuel because I disconnect my fuel pressure regulator and fuel shoots out
I have an 85 bmw325e there's no spark the crank sensor is at the rear of the engine. I have replaced both sensors there, replaced coil,distributor cap and rotor button. Replaced both fuel pumps. And now it still has no spark.
Did you use an oem crank sensor? Have you checked the main relay as mentioned in the video? Do you have access to another car with a known good crank sensor you can try?
I found problem by checking power wire from battery. Small black wire on positive post that going under hood on the side of main cable was corroded and not given power to main and fuel relays. I simply connect small wire to mean cable under the hood, and I have power for both relay.
I recently bought a e30 325e, and it starts and runs but has a rough idle. There was bad fuel in it but I cleaned it a little. Today it would start but then when I hit the gas it stopped working. Any advice?
When I try jumping my fuel pump relay - fuel pump not engaging, it remains silent. When jumping fuel pump directly from a battery - it works. Any idea where to look at to fix this? Could it be ECU related problem?
If youre jumping the relay that would bypass the dme. Are you getting constant power to your relay? I would check the fuse first then wiring to your relay and also wiring from relay to the pump.
Last week my car just randomly turned off and didn’t want to turn over, I came back to it a couple days later it turned on but after a couple of minutes It just shut off, so I think it might be fuel pump
@ 7:08 what is connected to the second 3 prong wire harness? Mine is just dangling there bc the previous owner removed what it was connected to. Can't find this info anywhere. Thanks
If you are talking about the identical plug beside the cps, that is the inductive pickup. It looks like a spark plug wire and goes to the number 1 plug wire, its supposed to aid in firing the injectors but several have said it doesnt affect the way the engine runs at all except possibly less mpg. If you look at a used set of plug wires on ebay you will see what it looks like, it just has a little plastic ring that wraps around the plug wire.
@@CARSTUDIOYT thank you. I was able to figure this out on a random BMW forum a guy had this same plug in that had fallen off. Many thanks for the reply
I replaced both relays coil, cap, rotor I tried the jump wire the fuel pump kicks on but when I turn the key over the fuel pump shuts off while using the jump wire
You may have a cps issue, I would run 2 jumper wires straight from the battery to the fuel pump and then try to start it and if it starts you may have a wiring issue. If it still doesnt, I would replace the cps with an oem one.
The cps is only one connector but it is identical to the tach sense connector beside it. If you accidentally swap them the car just wont start, it wont hurt anything.
When I use the wire from pos side of coil to pos side of battery the air flow meter hums and the car starts. I put my hand on it to feel it, and it was humming away, and the car starts right up. When I pull that wire off, the car will not start. The CPS is new, wires and plugs are new., I changed out the chassis ground, new ignition switch, and borrowed a good CPU from friend. Still no start. Do you know why the jump wire is igniting the airflow sensor and starting the car?
Are you saying the car starts on its own when you connect that jumper wire? it sounds to me like you have a relay sticking. Also make sure its not your idle air control valve thats humming. I had the main relay sticking on my car years go and with the key off the idle air control valve was humming.
It starts when I turn the key and have the jumper wire connected. But the air flow sensor immediately comes on when I connector the wire, then turn key and it fires right up. Also thank you for the fast response.
What happened when you crossed the connectors for the CPS and the adjacent connector? Do you know what the other connector controls? I have been chasing down a no start on my 88. Fuel pump works and in fact if we try to start long enough we get fuel backing up into the intake and back to the air box.
@@CARSTUDIOYT thought I did. Had to sideline this project to work on others. Today I put the battery on a trickle charger. Tomorrow I will check spark. At one point it acted like it was going to start for about a second. Then nothing. Cranks fine and we definitely have fuel.
@@CARSTUDIOYT you mean check timing? As part of our refurb effort we did replace the belt and tensioner. This car has been off the road for at least 8 yrs and the owner died so I can’t get info about why it was parked.
Tested this morning. Pulled plug on six and got good spark. (Plugs are new). Checked CPS wire and as long as you use the mounting plate it looks like the two wires cannot be crossed as the plugs are oriented 180 degrees. Found plug under intake disconnected and reconnected it. Tried to crank and after a couple revolutions it started to catch like it was going to run but then died. Tried again and the engine spins but nothing happens. Now I smell gas. Makes me think there is something going on with the spark.
sorry for the delayed response, if you followed everything in this video and are getting fuel and spark then you should check your compression. If you followed all of these steps and still not getting fuel or spark then I would check the ignition switch, wiring, and ecu.
Ooo man i got true all this problems.. Miss fire 1.3.5.. Test by test..change head gasket..still missfire... ......and bingo ..OC2 SENSOR..56 BUCKS.. I fill like shit after all.....
If you have power to the coil but no spark then i would definitely assume the coil is bad. You can buy a new one from an auto parts store for a very reasonable price.