great video bro. love that fix. I've got a Suzuki 1.3 twin cam EFI 1300 cc. 94 model and it have this problem. it's very hard to get a new tps. so I'm glad I found you. will work on it tomorrow. thanks.
Quick question what does the tps actually do on a manual car? It’s only got 2 pins in the connector. It’s just a on off switch. Just wondering what it does
This is my second Z31 in 12yrs, and they both had an intermittent problems when the car wasn't driven for a couple days under very wet and humid conditions. Problem being them dumping fuel and misfiring when driven, then once shut off would not start again. Just cranking and dumping fuel. Once the weather would dry the problem would go away. Since this happened on both Z31's I figure it's a common problem. Re-seating the corroded TPS plug would "sometimes" remedy the problem. Does anyone know what the cause could be? Ever happen to any of you guys? Thanks!
+Jay Gates Kowalczyk So my Z has been sitting a lot, and it's been very wet. When I would attempt starting it just to run the motor, it would all the sudden start like trash, would have to crank it for a solid 20 seconds and it would sound flooded. I also noticed a random dip while idling, I've noticed this a long long time ago and didn't ever look into it. I am about 99% sure its the tps switch and harness. When I touched the harness, the idle dip went away. When I shorted out and bypassed the tps, the car starts fine. Hopefully I will have a video to add soon.
glad im not the only one but seems fixable i hate old folks looking at me like a mad man while im leaving walmart lmao and it floods my car causing slight back fires ugh poor car
I have not seen a TPS for an automatic but I know it has another sensor in it. I did find some info about what data it sends to auto transmissions, have you tried googling anything about it?
It's great for what I use it for, which is just ac/dc and ohms. I tend to blow these up, so I stopped getting good ones. This has been one of the better random cheapo ones I've had though.
All this sensor/switch does on a manual transmission z, is close a circuit and send the signal when our foot is off the gas. So applying the ohm meter as our foot is off the gas and as the car should be idling, should read solid connection or 0 ohms. Then as we push the gas at all, that connection should open completely and have infinite ohms or no reading.
Check out the reply I just left for Syphious below, let me know if you still feel what seems like play in the drivetrain still after adjusting the tps. Thanks.
hey Micah, actually I did the same thing on my kawasaki KLX 250s. just changed the TPS with a similar one and after the replacement I got fluctuation on throttle sensitivity or in other words some abnormality, so tiny but reasonable different for an accustomed user. anyway I have just repaired the old one, (bike TPS's are quite similar to cars') and now it is working okay. there was no screw on mine so I had to disintegrate the whole piece and then using hot silicon, I stick the two pieces together. and the problem is solved :) thanks a million.
Just did this, Think it worked better but well see on the road. You can adjust the sensor angle by starting the engine too but in order to have the sensors position change matter you need to restart the engine so using a multimeter is a much better idea lol. And Yes, The auto does have another sensor and the plastic part is red but the extra sensor isnt a part that needs cleaning nor that could be cleaned with anything more than spray electronic cleaner. I was able to get my sensor to close tightly back up without the rivets too, Dielectric greased the contacts on the sensor and plugs and seems to be a bit better but ill see on a cold day as well, Thats where I had major problems most the time
Mine still bucks a little when coasting through town at 20-30mph in 3rd or 4th but I think that is just due to 200k miles with original suspension and bushings. Let me know how this works out for you, I'd love to figure out what that minor buck is. I changed the differential gear oil around the same time, it seemed to help but not much. Thanks for watching. Is yours auto transmission or manual?
You try changing your tranny fluid and filter? Transmissions do need oil and filter changes. Although, manual transmissions have no filter. Your transmission could just be going out or you could have some sensors not working or giving bad readings. Id turn your ecu over into diagnostics mode so you can see if it turns up and error codes
Hunter Jones Checked the ecu when I got the car, its not spitting any codes out. This is the third z31 Ive had with 100-200k miles, they all seem to do this buck. Its not bad, just noticeable till pressing the clutch and 'resetting' the play in the drive train. I will have to try replacing the transmission gear oil at least once this summer, I keep putting it off cause it reminds me of the many clutch changes I've done to these. I would imagine it could be something like a u-joint on the drive shaft or something as well.
Mkay and resetting the the play? And yeah, ive heard it can make large changes to some peoples vehicles and that could be true but youd be able to test any problems with the driveline by putting the car in nuetral when driving down a highway or road at a decent speed
+Syphious Hey, how did this turn out for you? Mine has been sitting recently and I can feel it not triggering for the first few times I press the gas. I just realized while typing this, I wonder what affect a bad TPS has on engine starts/cold starts in these things..
+Sam Jas Thank you. Yes Nissan add interesting complexity. This series seems to add even more on top of that. But that's why I love this car it's got personality in its over complicated mess of issues.
+Sam Jas I think its mostly dependant on what car your talking about or more the engine it has, The 300Z is a real pain and its engine and or overall configuration seems to have moved to later vehicles and dragged some of its painstaking issues with it, But other than that the other Nissans ive had haven't been bad to work on at all really.. And on newer cars in general theyre just a pain now, Cant really get past it.. And if you say that Nissans are complicated and its not wise to get one, Try getting stuck with nearly any euro car. Ive gotten stuck with a few Vw's and man they are a pain and theres so many little things that are a total pain to replace that on any other car either wouldnt go out or would be an easy fix.. Just such a total pain in the arse
