I am baffled.

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cliffjalien - 14 Mar 2006 22:16 GMT

1988 thunderbird 2 door coupe, It starts on starting fluid, rus all day but
will not start the next morning or if it sits for a few hours. I have
checked spark & fuel( do not know the pressure) I did change the fuel filter.
any ideas?

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Tom Adkins - 14 Mar 2006 22:27 GMT

> 1988 thunderbird 2 door coupe, It starts on starting fluid, rus all day but
> will not start the next morning or if it sits for a few hours. I have
> checked spark & fuel( do not know the pressure) I did change the fuel filter.
> any ideas?

I've seen the TFI module cause this on rare occasions. If the module doesn't send
the PIP(?) signal to the pcm while cranking, you get no injector pulse.

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Jim Warman - 15 Mar 2006 01:51 GMT

You need to find out what the fuel pressure is before you go any further....
Pushing the schrader valve and watching it squirt just isn't quite as
accurate as it needs to be...

> 1988 thunderbird 2 door coupe, It starts on starting fluid, rus all day
> but
> will not start the next morning or if it sits for a few hours. I have
> checked spark & fuel( do not know the pressure) I did change the fuel
> filter.
> any ideas?

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Bob - 15 Mar 2006 01:57 GMT

Check your throttle position sensor voltage. If it measures over 4 volts
when at idle the computer goes into clear flood mode and shuts the injectors
down.
Bob

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ShoeSaleman - 15 Mar 2006 02:27 GMT

what did the spark look like? was it nice thick and blue or kinda thin
and yellow? how did you check it? how far will it jump? do you have the
means to check for injector pulse and fuel pressure when it screws up?

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