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post #1 of 8 (permalink) Old 06-17-2016, 04:07 PM Thread Starter
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Help Please

Hi! Can anybody help?
My 96 Trans Am has developed the following problem...
Started up fine yesterday but fan running from start up..drive about a mile and stopped engine..struggled to start again and running rough, warning light on dash 'service engine soon' stayed on and fan still running..every time I fired up it struggled to start and black smoke coming out of exhaust sometimes..

Today he fired up no problem, ticked over fine, no dash warning message but fan running!

Your thoughts and help would be very appreciated thanks!
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post #2 of 8 (permalink) Old 06-17-2016, 05:48 PM
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Sounds like you have a code. Some codes don't light the ses and also kick the cooling fans on as a precaution. Get an obd 2 scanner and scan for codes.

Also a running sensor scan with a scanner capable of doing so would help you see if any sensor readings are amiss.
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post #3 of 8 (permalink) Old 06-18-2016, 08:15 AM Thread Starter
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Hi!
Thanks for that! Being a thick UK resident I'm not sure what you mean by the term ses.

Also forgot to mention, I removed the fuse to stop the fan operating but it still struggled to start and had the dash warning light on continually.

Have spoke to an American car garage today and he thinks it's either an engine management problem or the distributor sensor (situated behind the water pump).

Again, any thoughts/resolutions welcome thanks!

Brian
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post #4 of 8 (permalink) Old 06-18-2016, 05:17 PM
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SES means service engine soon, also know as the check engine light (cel).
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post #5 of 8 (permalink) Old 06-19-2016, 04:12 PM Thread Starter
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Once again thanks! The ses came on and stayed on throughout the problem. The next day when running ok it was off as it should be.

I've been told it could be a faulty sensor on the water pump behind the distributor but whilst I can see a sensor kicking the fan in would it give the struggled fire up and rough running problem?

Hope to get it looked at properly tomorrow so will report back!
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post #6 of 8 (permalink) Old 06-19-2016, 04:45 PM
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Yes, the (cts) coolant temp sensor can cause all sorts of running problems. This is the sensor that tells pcm how hot coolant is. The sensor usually shows very low temp when it fails. This causes pcm to add way too much fuel to mixture. Car runs badly or not at all.

The temp gauge uses a different sender for it's temp readings.

If you have a scanner that shows running sensor data, you would see the cts temp not matching or even being close to gauge temp once coolant begins to get hot.

Last edited by cocobolo95; 06-19-2016 at 04:48 PM.
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post #7 of 8 (permalink) Old 06-19-2016, 05:15 PM Thread Starter
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Thanks again..you are a big help..will let you know as I find out!
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post #8 of 8 (permalink) Old 06-20-2016, 09:32 AM Thread Starter
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Update..garage did a scan test and got the code for faulty coolant sensor as we thought!
I can get one from the USA fed ex'd here to UK for Thursday.
I hope to have my TA on the road for 1st July as I've a big run/show planned.
Fingers crossed and thanks for your input and help!
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