20 Most Recent 1991 Pontiac Trans Sport Questions & Answers

Engine speed is determined from crank or cam sensor. You most likely have a cluster issue.

There should be one flasher on the fuse box under the instrument cluster and another behind the radio.

Most likely check under your hood and look for the fuze book and look for blower it will most likely be a relay

I had to run a new ground wire from my wiper motor to a chassis ground to eliminate a similar problem on mine. Mine kept intermittently stopping, of course always at the worst time. The ground wire resolved the issue.

have part number that was taken out, unsure if right part. electric sunroof will not operate think i need relay under the hood, 5 pin

check the fuel pressure, you may need to change your fuel pump.

What is the question? Do you need to know what kinds, how often, how many, spark gap, how to do it, where are they...WHAT?

About what year, make, model and engne sizes there, please.

In the distributor.

Problem mayby ECM control unit and couple fuse (EGN)
But your start motor working???
Code 12 meens "No distributor reference pulses to ECM/PCM"

remove and clean IAC ( idle air control ), this is what controls idling on to days cars. if this does not help a lot, check or replace coolant tempurature sensor. it may be bad, if it is, it will think the engine is always warm and send wrong info to pcm. good-day ! and may god bless. you can also have a vaccumn leak ! if check engine light is on, get it scanned to know what area is causing the problem.

Power going to the fan from cooling fan relay.

you have a few things going on... first your temp gauge needs to be replaced.
2nd if it is over heating enough to turn off then you might need to check, repair or replace the following items;
Thermostat Coolant water pump coolant hoses on both the top and the bottom of the radiator Fan clutch or Fan Radiator may have a hole or is bad (check to make sure that the fins on the outside are not bent or misshapen) if they are you can buy a tool to straighten them out at most auto parts places
Hope this helps. Good luck.