Question about GMC Suburban
It will start and run for a bit of time, but after a while it just dies. Not sure what the problem is now, but this issue began not too long after I replaced the transmission mount.
Does it start right back up, or does it need to cool down a bit first? I would check for spark on a spark plug wire when it shuts off. If no spark, it could be the crank position sensor. If there is spark, check the fuel pressure.
Have you checked for trouble codes? Here's how:
Posted on Nov 26, 2013
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Posted on Jan 02, 2017
same problem I overheated my jeep and ruined the Idle control sensor. put a new one in and it fixed the problem
Posted on Jan 04, 2009
there are 2 sensor on the carb . you may need to replace both to find out whiche one it is . try this also give it gas while starting and when it starts you will have to keep your foot on the gas a little to keep it running if it runs that way its one of the 2 senors .
Posted on Jan 21, 2009
SOURCE: 1989 Chevrolet Suburban Problem
I've Been reading up on this problem and working on an 89 suburban with the same problem, tps, vacuum leaks, fuel pump, fuel filter, IAC, EGR, MAP Sensors are not the problem
Posted on Nov 22, 2009
I have the same problem and i checked the knock sensor should give you a code 43!!! Disconect the connector of knock sensor and with multimeter you should get 4-6 volt with ground!!
Plsss contact me at firstname.lastname@example.org to disscus more about our problems !!
Posted on Nov 07, 2012
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