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+--- Thread: High idle (/showthread.php?tid=32072)
High idle - Frosty - 30-09-2015
Bit of an annoying issue with the estate it has started to do lately. When it just ticking over he idle seems to be high. Can vary from 1000rpm up to 1250rpm. Is a bit annoying as when going slow the engine is forcing it on. When it does it if I switch the engine off and then back on it will be ok for a bit then back to idling high again
Doesn't have any faults in it though. I did change the tps for another 2nd hand as I thought that could be the issue. But no change.
Not sure what else it could be? Poss temp sensor? Any help/idea much appreciated
RE: High idle - toseland - 30-09-2015
sticky throttle cable?
try to (when it does it) hook your foot under the throttle pedal and gently lift it
High idle - Frosty - 30-09-2015
Hmm I try that later but pretty sure the cable is ok.
RE: High idle - Poodle - 30-09-2015
Does the tps definitely go back to the stop? Failing that i'd be checking the fpr, excessive rail pressure could cause high idle iirc, a quick look on your live diags will tell you - check requested vs actual fuel rail pressure and fpr duty cycle.
Could be temp sensor i guess, would be surprised though, they don't have a high idle even when it's -8 outside. Any smoke? Could be oil finding it's way down the inlet. How bad is the injector rattle? Leaky injectors...?
RE: High idle - Toms306 - 30-09-2015
I think these idle at 1250rpm with the TPS unplugged so does sound like it should be TPS related. Any damaged wiring to it maybe?
High idle - Frosty - 30-09-2015
I'll look into it a bit more cheers guys. It stopped doing it for a week then has started doing it the last couple of days
I'll try and report back in the next few days
RE: High idle - mr_fish - 30-09-2015
Get the thing on planet.
RE: High idle - Jonny81191 - 30-09-2015
Hmm, does sound like TPS. Can you pinch a known good one to check it?
RE: High idle - cully - 30-09-2015
power steering pressure switch?
RE: High idle - Magenta Sunset - 30-09-2015
I was going to suggest MAF, but I don't know if yours has one. otherwise i'd also be thinking TPS. gave mine a liberal dose of WD between the moving bits - seemed to work.
RE: High idle - toseland - 30-09-2015
(30-09-2015, 01:10 PM)Toms306 Wrote: I think these idle at 1250rpm with the TPS unplugged so does sound like it should be TPS related. Any damaged wiring to it maybe?
THEY THROW THE EML IF IGNITION IS TURNed on with the tps unplugged
RE: High idle - Toms306 - 30-09-2015
Alright Tose, no need to shout.
You're correct and obviously it's not fully broken as you can't drive a HDi without a TPS input lol. Could be 'working' but giving false readings though, particularly if there's damaged wiring somewhere, I'm not sure if that would throw the EML.
RE: High idle - Frosty - 01-10-2015
(30-09-2015, 02:41 PM)mr_fish Wrote: Get the thing on planet.
Will do at the weekend
(30-09-2015, 02:59 PM)Jonny81191 Wrote: Hmm, does sound like TPS. Can you pinch a known good one to check it?
I got another i can try but im not sure that is the issue as when i swapped it for another first time round it still did the exact same issue
(30-09-2015, 04:01 PM)Magenta Sunset Wrote: I was going to suggest MAF, but I don't know if yours has one. otherwise i'd also be thinking TPS. gave mine a liberal dose of WD between the moving bits - seemed to work.
Funny you mention the MAF, I had a MAF fault some up the other day which i had in the past as well but this wouldn't clear this time so fitted a new MAF and now that seems ok. Dont think its any thing to do with the idle issue though
RE: High idle - Frosty - 05-10-2015
Was going to look into it this weekend but it was idling fine so i didn't bother. I guess ideally i want to plug it into planet when its playing up?
RE: High idle - Poodle - 05-10-2015
Yeah pretty much.
RE: High idle - Frosty - 08-12-2015
Been driving the estate a bit more the last week and it doesn't seem to be playing up any more
RE: High idle - Poodle - 08-12-2015
Hopefully just a dry electrical connection somethere then, good stuff.