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grandchero 09-13-2013 06:02 AM

Help!!!!
 
My wife ran out of gas on my 00 grand cherokee about 3 or 4 times. It starts up fine now but when it warms up it starts to lose power when you drive. Could this be the fuel filter pulling trash cause it ran out so many times.

Trav1s 09-13-2013 06:14 AM

Re: Help!!!!
 
The fuel pump is located in the tank and gas is used to keep it cool. Repeated running low/empty can cause them to go bad. I would suggest replacing the fuel filter (includes internal pressure regulator and is located above the rear axle) first and go from there. Let us know how things go for you!

grandchero 09-13-2013 06:18 AM

Thanks I am going to try that first and let you know how everthing turns out.

grandchero 09-13-2013 11:59 PM

It did not work. I think it has something to do with my p0123 code (high voltage to tps). Can somebody help me. I changed the tps (with dealer one) and the wiring and got the clockspring unplugged.

Frango100 09-14-2013 04:35 AM

Re: Help!!!!
 
Did you change the wiring to the TPS?
Check the connectors on the PCM (remove them and check for moisture/corrosion/dirt), but there is a good change that the PCM is the problem.

grandchero 09-14-2013 09:22 AM

Yes I changed the tps harness. When it get warmed up the lights dim when I press the gas. Is it a way to check the pcm?

Frango100 09-14-2013 10:26 AM

Re: Help!!!!
 
Quote:

Originally Posted by grandchero (Post 893214)
Yes I changed the tps harness. When it get warmed up the lights dim when I press the gas. Is it a way to check the pcm?

Headlights dim or instrument lights? Have a look at the battery voltage first, because a bad battery or alternator problem could generate strange behaviour. You could try to disconnect the alternator cable, isolate it with isolation tape and drive a bit to see if the problem is gone. Remove the cable with engine off, to prevent voltage spikes. Logically the battery will not be charged, so do this only as a test for a short time.
No good way to check a PCM without special test equipment.

grandchero 09-14-2013 11:15 AM

Ok im going to try that out and let you know the results.

grandchero 09-28-2013 08:32 AM

Sorry it took so long. I got the check engine light to go off but it is still bogging when it warms up. Could it be something with the throttle body?

Frango100 09-28-2013 06:13 PM

Re: Help!!!!
 
Check engine light is off, but is the code gone as well?
Did you check the battery voltage with engine off and engine on?

grandchero 09-28-2013 06:28 PM

I will do that next. I know I did have battery problems before. Would that make the rpms not go to 2000?

Frango100 09-28-2013 10:00 PM

Re: Help!!!!
 
Quote:

Originally Posted by grandchero (Post 901014)
I will do that next. I know I did have battery problems before. Would that make the rpms not go to 2000?

I was more thinking towards the alternator, so just to rule this out its good to know what the voltage is with engine off and engine on. It maybe has noting to do with it, but because you mentioned the lights go dim when pressing the gas its good to check.


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