Question about Pontiac Grand Am
If it is not getting fuel when you first start it, nothing you replaced is involved.
Could be a faulty fuel pump relay or check valve in the pump.
You would need to check fuel pressure at the injectors before you first crank the engine. It should have at least 25-30 psi of pressure after sitting overnight. And the pump relay should power the pump for 3 or 4 seconds when you first turn the key switch on.
Posted on Jan 15, 2013
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Posted on Jan 02, 2017
SOURCE: 95 saturn won't start when hot
Blair, I would take a look at he TPS (throttle position sensor) located on the throttle body. In other words, it sounds as thought sensor when heated is changing its value to "open" or "shorted".
If the car starts OK when cold, use a hair dryer to heat the TPS when the engine is cold to see if you can duplicate the problem.
Also is the a service engine light on? Codes?
If you have a "digital volt/ohm meter" available you can read the variable resistance of the sensor when the problem occurrs to determine if the sensor is defective.
Posted on Feb 09, 2009
Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.
Posted on Mar 08, 2009
take it back to shop because.some of the 2.8 v6 passat had 2 cam sensors.one for right bank and one for left bank.if shop already replace them.they need to remove code from computer.
Posted on Jun 01, 2009
right renew the glow plug timer/relay if you put a meter on the glow plugs when cold and turn ign on (with help) it should supply power for a about 20 secs ,time depends on outside air temperature ,if all else fails then do a colin --- use a push button switch,wired to a relay so glow plugs can be operated by pushing the switch which you will mount on the dash ,cant beat a manual overide system
Posted on Dec 14, 2009
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