Re: Jeep stalling and code P0508 and P0509
I just bought my 05 jeep grand Cherokee limited, have had it for 2 weeks and so far hasn't ran a complete week yet.. I have replaced the pcm because it wouldn't run. You could hit the pcm while cranking and it would start and hit again and it would die, so the computer was shot. After replacing the pcm it ran great for about an hr or 2 then just rev up and died while it was in park, cel on I checked code's had a p0508 checkled plugs and cleared it ran great for another hour and got almost to my buds house and died in the road would only run when I hold gas down let off it dies, limped it to his house and checked codes this time I have a p0508 and a p0509. I replaced iac valve and still just dies after I start it, will start and rev to about 2000rpm and then die I can feather it wit the gas pedal and keep it running but rpm keeps dropping and will die after I let off gas. I got it idle one time and it idled extremely low like 200 or 300rpm. I have tried to relearn the code's but the come start back when I try to start it. I love this jeep but I'm starting to regret it. Since i've bought it 2 weeks ago I've replace the cam sensor, crank sensor, battery, pcm, oil pressure switch, fuel pump, IAC. I hope someone can help out. Also I'm not trying to steal your post just seen you have the same issue.