1985 Ford LTD engine starts then shuts off when key is rele

JIMBO85

MEMBER
1985 FORD LTD

Electrical problem
1985 Ford LTD V8 Two Wheel Drive Automatic

engine starts and then shuts down when key is released to run postion. Have replaced ignition switch, injectors, plugs and fuel pump in gas tank. All fuse check good.

4 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there,

thank you for the donation,

I think your ignition system is fitted with a ballast resistor, this will be next to the coil, it should be a white ceramic oblong fitting, with one wore in and one out, check the continuity across this resistor no continuity it is burnt out, check this, next.

Mark (mhpautos)

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Sunday, November 8th, 2009 AT 9:32 PM

JIMBO85

MEMBER
2 POSTS

Ballast ck ok.
Someone told me that it could be barometic pressure sensor is this possible and where is it located and what does it look like. I'm trying to help a neighbor that can't pay a mechanic repair bill
Thanks in advance,
Jim

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Saturday, November 21st, 2009 AT 3:50 PM

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there.

What we need to do first is to establish what is failing, such as ignition, injection, fuel supply. Have you checked for any unresolved fault codes? Do you have a fuel pressure gauge, a noid light or a spark tester?

Mark, mhpautos

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Saturday, November 21st, 2009 AT 4:58 PM

BEHM105

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2 POSTS

DID YOU REPLACE THE IGNITION SWITCH OR THE IGNITION LOCK ASSEMBLY.
THE IGNITION SWITCH IS LOCATED UNDER THE STEERING COLUMN.
YOU HAVE TO REMOVE THE PLASTIC COVER FASTENED WITH 6 SCREWS WHEN YOU GET THAT OFF YOU WILL SEE THE SWITCH IT IS HELD ON BY BREAKAWAY SCREWS.

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Saturday, September 11th, 2010 AT 3:32 PM