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1995 Ford Taurus Repair Question


Topics covered: Engine, Fuel pump, Fuel pressure.
Mileage: 163,000 miles.

Asked on July 14, 2012

Engine cranks but won't start

Won't start. Turn on ignition, fuel pump runs and won't stop, fan runs, ODBC won't display codes (light on solid). So far replaced fuel pump (twice) Fuel pressure regulator, CCRM. Ran a new ground wire for CCRM. Engine occasionally starts but only if the following happens: turn key on (But not crank)Fan does not run, Fuel pump runs then stops, Then it will start. It runs about 2 min then dies. As soon as it dies the fan turns on.(This only happened 3 times in 2 days!)
Avatar Asked by RFogal

Answer

Replied on July 14, 2012

Engine cranks and no start: Go to this walk thru link: http://www.2carpros.com/articles/car-cranks-but-wont-start, then let me know-

Tiny Answered by rasmataz
68 questions asked
Replied on July 14, 2012

There is plenty of spark. Obviously there is compression. There is plenty of fuel pressure. I cannot remember the reading but it was sufficient. The problem is electrical. The fan is not supposed to run when the ignition switch is turned on. the fuel pump is not supposed to keep running. When these things do not happen the engine runs.

Tiny Response from RFogal
1 question asked
Replied on July 14, 2012

What liter engine?

Tiny Answered by rasmataz
68 questions asked

Replied on July 15, 2012

3.0 V6 Single Cam

Tiny Response from RFogal
1 question asked
Replied on July 15, 2012

Check and test the coolant temperature sensor, check the CCRM wiring back to the computer and computer itself

Tiny Answered by rasmataz
68 questions asked
Replied on July 15, 2012

OK. Will test tomorrow and get back to you. Thanks.

Tiny Response from RFogal
1 question asked

Replied on July 15, 2012

Sorry, I just remembered, if you pull the 50Amp fuse for the fan, the fuel pump still runs constantly and the engine does not start.

Tiny Response from RFogal
1 question asked
Replied on July 15, 2012

Check out the fan circuit as directed. That was a waste of time. /Having a wiring diagram without knowing the sequence of events is practically useless. Anyway, the problem has been solved. Swapped the PCM/ECU/Brain with a 1991 Taurus that I had and Viola! It worked! Admittedly the 1991 is not a perfect replacement for the 1995, the car runs a little weird. But now I can order the proper one with confidence. Hope this post helps someone. This drove me nuts!

Tiny Response from RFogal
1 question asked
Replied on July 20, 2012

Thanks for letting us know, and sorry we couldn't help you better with the diagnostic steps we provided.

Tiny Answered by rivermikerat (expert)
5,495 answers provided
Replied on July 20, 2012

I gave you the sequences: and computer itself, If the fuse and CCRM checks out okay-last place is the computer-Viola it is-

Tiny Answered by rasmataz
68 questions asked