16891 P0507 Idle Control System Higher than Expected
Radical idling is usually caused by a kink in the voltage wiring to the TPS. 'Drive BY ITSELF' or sticky electronic throttle is usually a bad TPS (sensor). since you replaced the TPS, wiring harness to the TPS, and with the few other mods, did you clear out and reset the ECM? Sounds dumb, but it is start.
OTHER AREAS TO CHECK FOR:
Unseat the IAC plug and then reapply.
Check for irradical voltage at the IAC sensor
Where the 'L' vacuum lines connected to the intake manifold, replug and clamp them. This can cause sticky throttle due to leaking hose.
May have to install another new TPS to ensure the current one didn't go bad. It took two times with the TPS sensor.
I played with the IAC Connector and wiring and found it had a fault in the voltage line. Having a poor contact somewhere in that the wiring to the sensor will raise the idle to 2K range and radical idling to 800-1100 RPM range.
Well my thottle hasn't actually stuck, but man it has been idling really bad. I've thrown a code three times now. First time the Bill Butler guys in Warner Robins GA, changed my spark plugs. Only thing that did was make my car not want to crank. lol Then they changed the ignition coils. No change. Threw same code a week later. Sometime today they are going to get in new fuel injectors for my car. I told them about the potential wire thing, but they think they have the problem this time. Well see. Almost getting to be lemon law time! Anybody have any suggestions on what I should do if my car isn't right this time? Anybody in Georgia had luck with another dealership in GA?
my car holds the rev when i let off the gas as some of the others... but when im idling... it revs up and down feeling like its going to die.... anyone have an idea?
this is happening to my car too going to dealer ship today to make a apointment for torm about the TPS
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will be geting another Srt in oct.
Sold the yellow srt / got an rsx type-s 05/ wreck that on ice..
I just replace the voltage line to the TPS again since the moron Dodge 19-year mechanic did a poor job of heat shrinking the wire to the point that it was brittle and finally broke this weekend. Now works like a charm (spliced in a longer wirer).
i think it has stop now out of no where my car ideas fine i was looking at my lines they look ok. but the next time it starts again it going straight to dealer
Hmmm, just for the record my 2005 did the high idle thing a couple of times. Only seen it twice though, and it didn't last long, just a few seconds while I went WTF, then never did it again. 1200 miles on the car.
I guess I may get them to have a look when I get the oil changed for synthetic.
Mine has been doing it since Thursday. Idle was stuck at 1,200-1,500 RPM. When moving if the car wasn't in gear it would stick at 3,000 RPM and just hold that, every so often it would fluctuate between 2,000 and 3,000 RPM for no apparent reason. Another thing I noticed is that if I left the car in neutral it would stay at 3,000 RPM, but as soon as I came to a complete stop, the revs would come right down to 1,200-1,500 RPM every time without fail.
I brought to one dealer and they said it's all fixed, then my car comes rolling around the corner and it was exactly the same. I have no idea what they did. Probably just left my car out back all day.
Took it to another dealer yesterday and sat around all day waiting when they decided that they needed it overnight. So i headed home and today they called and said they found the problem. Leaky intake manifold gasket. So I said alright fix that puppy and call me when it's done. They fixed it and I went down just before close to pick it up. My car comes around the corner and it sounds pretty normal (no 3,000rpm revs) but I noticed when the guy took his foot off the gas it was taking unusually long to come back down to idle. I hopped in the car and noticed that it was different, but not fixed.
On the way home I noticed that it would idle at 1,000 RPM and when moving if I took the car out of gear that it would stay at 2,000 RPM and hold. This is obviously better than when it would stick at 3,000 RPM, but it's still not right.
Now I'm not sure if it needs yet another gasket because this one was not installed perfect, or if the IAC motor is messed up, or if the TPS sensor is fried. The tech told me that all the voltages going to the sensors on the throttle body checked out to be within specs. So I'm guessing that maybe the wires are fine and all, but that one of the sensors is messed up.
Looks like I'll be calling them up tomorrow and having to drop it off again. This is getting very frustrating since I haven't had a working car since last Thursday, and since I'm not 21, I don't get a rental car.
I find it hillarious what a mechanic might tell you when they are confronted with one of our cars showing these symptoms. I took mine in and they replaced a plug in cylinder 1 and flashed the ECU(ECM?).. But the funny part was before they did all this I told them about the TPS and he tells me that thats impossible cause it wouldn't run if the TPS was going bad.. Then he says what kinda gas do you put in it.. (premium 93oct never less) then it is what "BRAND" of GAS do I use.. And do I fill up when it is raining??? Never fill up if it is raining or if a GAS tanker is in the gas station lot. I am sure bad gasoline can cause issues but common ? Then he says maybe your exaust is plugged since it is high flow??? Please pull my other leg it plays music. Needless to say the car is still doing it just as bad if not worse than it was..
I didn't read all 18 pages of thread, so forgive me if I'm repeating, but I'm assuming you've already eliminated vacuum leaks? AKA choke off the throttle body and make sure it dies? If there is an intermittent open in the IAC wiring, it will not set a code on many of the older chrysler vehicles, but I would assume an NGC would catch it. TPS, yeah, that could do it too. One thing often overlooked is the ECT. If that is reading too cold, then it'll obviously raise the idle as well. Hope I'm not just repeating. With some more info I could possibly help... I did work with the STAR center on these types of problems at one time.
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/ got an rsx type-s 05/ wreck that on ice..
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