Lincoln vs Cadillac Forums

(This is the forums archive - If you want to get back to the main site simply click the banner above and you will be taken to our homepage.)

Lincoln vs Cadillac Forums is the Ultimate Online Resource for Owners and Enthusiasts of American Luxury Cars. Feel free to browse through our archive - but make sure you make it back to our main site - Lincoln vs Cadillac Forums

Cadillac XLR : Cadillac CTS : Cadillac : 2005 Cadillac STS : Cadillac Forums : 2000 Lincoln LS : Lincoln Mark VIII : Lincoln Mark VII : Car Wax
Lincoln Town Car : Lincoln Air Suspension : Lincoln Continental : Lemon Law : Do It Yourself Car Repair : Lincoln vs Cadillac Forums : Mesothelioma

Back to the Archive Main Page

Pages: 1

New to LVC General and Electrical Questions

(Click here to view the original thread with full colors/images)

Posted by: EvilLsc

Hello and great site! I have been a '91 lsc se black/black owner for about 4 years now and it is a great car. It has been retired for about 8 months now and was wondering if you guys had any ideas for me.

How it died....

The car stalled on day pulling into the drive and would not fire again for about 15 minutes. Once started I put plugs, wires, fuel filter, air cleaner, cap, and rotor on it and the problem appeared to be gone.

6 months later ...
Same thing except about 30 minutes to get it started. Drove it home and it would never start again.

What I have tried
New TFI module, coil, distributor, plugs

Car turns over now just will not fire. Battery appears to be pulling power when I hook it up as well so I am thinking it might be electrical, but where shall I start?

I have a new motor and this car is going to become a serious toy, but I would like to get this issue taken care of before it gets torn down.

Thanks to all for you input and sorry for the long post.

Posted by: pepperman

Posted by: NYC LS8

Have you checked the fuel pressure at the schrader valve?

Posted by: EvilLsc

Quote:

Originally Posted by NYC LSC

Have you checked the fuel pressure at the schrader valve?

No I have not checked that, sorry to sound stupid but .. what is the best way of checking the pressure?

Posted by: NYC LS8

Slap a fuel pressure gauge on there and see what it reads when you go to crank it. The valve is behind the alternator...looks sort of like a valve stem on a wheel. Stock should be about 40psi or so, IIRC (been a while since I had a stock fuel pressure regulator on there)

Posted by: Awesund

Welcome!

If you don't have a fuel PSI guage or are low on funds to get one, here's a little help, but not guaranteed... when you turn the key to "On", not "Cranking" the engine, you should hear the fuel pump spin for about 1 second or less.
Just get in the car, close the doors/windows, turn off all radios/AC and listen when you turn the key to "On". You should hear the relays click and a "wizz" for about 1 second. That's the fuel pump priming some pressure(PSI) to the injectors. If you don't hear this, the fuel pump is probably kaput! But if you can, do as the others have suggested with a gauge. Then go from there.
it could also be a bad EEC relay.

Additionally... go and buy a Haynes manual or equivelent for the Mark VII at your local auto parts store.

let us know what you find.

Posted by: EvilLsc

well although not the right way of going things I have sprayed some ether in the butterfly and didn't even get a sputter. So that has me thinking that I should have at least got something out of it if it was a fuel issue. I was thinking of renting a computer and see if that would tell me anything. What do you guys think?