1989 Lincoln Town Car Fuel Pump Inertia Switch Replacement 

@retrochad This style started with the 1981 model year. The base engine was a carbureted 302, but CFI was optional until MPFI became standard across the board in 1986. I think Ford was pretty aggressive with some innovations such as the inertia switch and serpentine belts, which they had started using as early as 1982.

@WhoSaidTyler Thanks a lot for that information. It almost seems a little odd that the Lincoln switch release date would have been '81 since I think this body style of Lincoln and fuel-injected engines began with the '80 model year although the pre '87? would have been CFI. Maybe the '80 models didn't have an inertia switch but new safety regulations required it?

@DasMidnightDrifter There is no rust at all underneath the car, it has likely stayed in this area all its life and never been exposed to salt and minimal snow and rain.

Thank you very much

Good idea swapping the switch.

at 3:44 here is a quick how-to on decoding those part #s: E1AE- First digit is decade released, E is '80s, 1 is for 1981, A is Ford product line and E is Engineering. Next 4 characters are the part number and last series are the revision. So, Lincoln switch is a 1981-release switch, Mercury is 1987-release. Same basic switch since part number on both is 9341. E1 and E7 does NOT mean thats the exact year they were made, it means thats the year of that design release.

Wow! You got lucky that switch worked.

Very nice resolve.

always smack the mounting area close to it , with the engine running to make sure the pump shuts down , then reset it ...the life you save will be your own ....it will make a sorta buzzing then click sound a real odd sound you will know it right off when it trips ....

Nice👌✌️👍

I keep hearing a loud noise outside of my 89 town car by the rear wheel driver side when I open the trunk it sounds louder. It sounds like a loud hissing

Everything on the 1978 Grand Marquis will have part numbers beginning with D3, D4, D7, D8 etc. D9 would be 1979 and that of course would be too late.

@lawnside82 It has no oil pressure in the engine and a bad transmission.

Genious

How would I find & replace a vacuum leak on my 89 TC? If I try to accelerate fast(punch), it hesitates, & I feel a spurt in the peddle, & it takes off from there. I been doing everything I could think of to get rid of it. I just replaced my cat, muffler, added a resonator. Adjusted the kick down cable, etc. I've replaced the TPS, MAF or MAP sensor, ignition coil, spark plugs, spark plug wires. etc. But I never checked for a vacuum leak, cuz I really don't know how. Can u help? Thanks in advance..

whats wrong with the grand marq?? it looks way to nice to be just rusting there..

you can reset the shitch, maybe it needs to be reset?

@1112223333111 I did try resetting the old switch, but it had not tripped.

Yup the switches are indead 60-70 bucks , and through the late 80's through the late 90's they were very failure prone .....

Where is the fuel pump relay located on the 89 Lincoln towncar?

How many miles are on the Lincoln now?

And my car won’t start and I can’t locate the feud pump switch

Hey I have a 93 Lincoln town car executive series

Good to know...I will have to keep that in mind on any Ford vehicles we own or will own. Your solder joints sure look better than mine, I need to work on that! Looks like the Mercury has become quite the parts car, but I guess that is good to have around like in this case. You always have extra parts.

Hey bud can you do a video on a 302 v8 windor carburetor efi for a 1985 lincoln town car

@WhoSaidTyler One time I was looking at a 1970 Lincoln for sale and was reading something about D0VE heads or something on the engine and that stuck in my mind as it was similar to the word "dove" Now I know what that code means (D=1970's decade and 0=1970)

Inertia switches are annoying in fords =\ when they get old they go off really easy.

@1112223333111

fut