If the problem started with the new TPS, it's pretty likely that the TPS is the problem. If you can round up a scan tool, you can see what the TPS is reporting to the ECM.I replaced my TPS and I have a high idle when I hit the clutch in and it annoys me greatly. Any advice would be great I am hoping there is another solution besides buy another TPS
Problem is, the computer doesn't govern idle except when the throttle is closed. And it doesn't know that the throttle is closed unless the TPS says it's closed.Idle RPM is governed by the PCM and should be the same (about 850 RPM) with the clutch in or out.
This sounds like a vacuum leak, if however you are sure you don't have one, I'd be looking at the intake gasket. Had a truck that would do this. Idle crazy high but otherwise drove fine, new intake gasket and everything was smooth as silk again.I am having the same problem but mine also has a high idle when in neutral as well. My RPM's shoot up to 2800 and stay constant. It drives fine though. Have you found a fix?? I replaced my TPS and cleaned my IAC with no luck. Also cannot find a vaccum leak if there is one... Let me know if you find the problem.
Has your intake manifold ever been removed & replaced, like to install a new exhaust header?I am having the same problem but mine also has a high idle when in neutral as well. My RPM's shoot up to 2800 and stay constant. It drives fine though. Have you found a fix?? I replaced my TPS and cleaned my IAC with no luck. Also cannot find a vaccum leak if there is one... Let me know if you find the problem.
The last time my intake manifold was off was about a year ago when I replaced the gasket. I just checked my vacuum lines again today and found two small leaks. Fixed those and now my idle is even higher. I will be replacing my IAC tomorrow but I am now out of options other than a full engine swap. :banghead:Has your intake manifold ever been removed & replaced, like to install a new exhaust header?
Corrected.I repaired the two leaks and searched again and haven't yet found the source of the remaining leak...
Did you already try all of the above suggestions?I'm suffering from a similar problem. Cleaned the throttle body and replaced IAC and TPS with dealer supplied parts to no avail.
Any suggestions where to look for the culprit?
Did you replace the TB gasket and the intake manifold gasket? That would be my next step if I already did everything you said. An idle that high is almost always a vacuum leak. You can try and find it first by spraying carb/TB cleaner around where the TB meets the intake manifold and where the manifold meets the head.Ok, so I changed my MAP sensor, replaced all of my vacuum lines, cleaned my TB, replaced the TPS and cleaned my IAC.... My header looks fine, I did inspect it. I am out of options here!! Is there anything else that I can look at because I am still idling at 3k!
I believe so. I did notice talk of a gasket between the throttle body and intake manifold. I don't have a gasket on mine.Jerry Bransford said:Did you already try all of the above suggestions?
:whistling:I believe so. I did notice talk of a gasket between the throttle body and intake manifold. I don't have a gasket on mine.
I have replaced the TPS and IAC, cleaned the throttle body and had the fuel pump replaced.
Still idles around 1800 RPM, so am kicking out codes for not achieving idle. Oregon DEQ winter pass me.
Where (how) should I look for vacuum leaks?
Thanks