I just took our 08 grand caravan sxt to our local mechanic to pull the code and it come out with a p0507 error. I found out this means Idle control system rpm higher than expected. Can anyone point me in the right direction on how to fix this problem. Thanks

 

Replace the PCV valve then see if the code comes back.

 

ok i will try that, thanks

 

Sorry I was busy when I posted that. The PCV valves on those can sometimes stick and you will get some strange codes related to idle or vacuum. There is one code they cause to set sometimes in the ABS module (ABS module? yeah I know right? WTH?) that may lead some mechanics to put a PCM or ABS module in it. That's why the suggestion to do the PCV first.

 

TNtech - Correct me if I'm wrong but don't the 5th gens have an electronic throttle (which I know zip about)? Could a 507 have something to do with that system?

 

My 2008 Grand Caravan 3.8 has begun throwing the P0507 code in addition to "electronic throttle control" (red lightning bolt in a venturi icon) and "yellow Traction control" messages shown on the speedometer.

When the ECT and Traction alarms come in (almost simultaneously), the vehicle goes into an open loop limp home mode with high idle and runs very poorly. Shutting the engine off and restarting it will heal the problem for another 20 miles or so.

 

PCV valve is sticking and causing a "detected" vacuum leak. PCM goes into a strategy to compensate for it. You can almost compare it to "limp-in". That's why the key cycle resets the strategy. The ABS code is also related. Replace the PCV valve.

 

Yea, What he said. He is right. We had a tech trying find a vaccum leak. It ended up being the PCV valve was sticking.

 

awesome, thanks. Nothing substitutes for experience on this stuff! I saw older threads where dealerships installed new engine harness, pcm and other things trying to get rid of this problem.

The '08 and up PCV looks like a bugger to replace. I am thinking it'd be a lot safer to carefully cut the pcv hose with a exacto knife blade and replace it instead of trying to remove (save) it. I see some threads where folks actually broke the rear valve cover trying to get the hose unstuck. This works for flimsy heater core connections so why not a pcv hose lol. I'm gonna try a bolt threaded in the old pcv to pull it, as others found this to work.

 

I spray them down with lube, smash the small opening so you'll have something to grip, twist them back and forth a few times, use a long pair of pliers and "fulcrum" it up and out. Don't smash your fingers! Put it back in with lube and use something flat across the top of it to push the new one in there. I was worried a bolt would flex it out and crack the v/c flange.

There is a problem with the DTC that is set in the ABS/ESP/TRAC system. It's a seriously flawed test procedure that could make some people pull their hair out and/or put expensive parts on it.