high revving when idling?

11762 Views 11 Replies 10 Participants Last post by chris vince, 5 d ago

fodenwagon

Discussion Starter · Apr 20, 2009

Hi all, my 53 plate 2.5 Navara has a strange problem, occaionally it revs when idling at between 1500-1700 revs, i took it it my garage and they plugged it in and it came up with fuel pump fault, so the pump was sent away and no problems found with it, so £800 later no cure! then we found that by lifting the accelerator pedal upwards it would bring the idle down to correct revs, so £100 later a new pedal assembly had been fitted, and it worked fine! but 2 weeks down the line its started its old tricks again! any ideas?

Cheers Duncan.

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sphinx_uk

· #2 · Apr 20, 2009

im sure i remember something on here about letting the engine idle for 10 mins and the ecu wil reset the idle speed...

Mowerman you'll probably be able to find the post in question with your scary super mod powers of recollection

*edit*

there you go, last post on this thread mentions it :thumbright:

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fodenwagon

Discussion Starter · #3 · Apr 20, 2009

Thankyou will give it a try and let you know

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bryn

· #4 · Apr 25, 2009

hi i have the same problem with my 03 nav,it is an ecu foult all i do is turn the engine off then on again and let it idele for 5-10 mins then it sorts its self out.hope this helps.

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Ben

· #5 · May 4, 2009

I know that from memory if you have the heated mirrors on this puts a load on the engine causing it to rev? this only happens if the rear demistor is off though for some reason. With it on and the heated mirrors on it doesn't rev. Weird but mine has always done this!

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rrossetti

· #6 · Dec 18, 2010

thank you for this post you got it spot on

rob

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R_ace-navara

· #7 · Dec 19, 2010

just let idle for 10min, and back to normal.
RPM should go back to 750~850 :thumbright: :thumbright: :santa:

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equid22

· #8 · Sep 23, 2011

Mine just started doing the same :x Luckily found this thread before I was about to start fiddling with things.

Will give it a go and cross fingers…… :!:

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equid22

· #9 · Sep 23, 2011

:thumbright: 5 mins and worked like a dream :thumbleft: :cheers2:

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Aladdin

· #10 · May 16, 2018

I've had the same problem a couple days ago and lucky to find this thread just by Google search. Thanks for the info, 5 minutes it was back to normal. Had to be part of this community as I have very little mechanical knowledge, so I am a new member now.

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Mattj61

· #11 · 22 d ago

fodenwagon said:
Hi all, my 53 plate 2.5 Navara has a strange problem, occaionally it revs when idling at between 1500-1700 revs, i took it it my garage and they plugged it in and it came up with fuel pump fault, so the pump was sent away and no problems found with it, so £800 later no cure! then we found that by lifting the accelerator pedal upwards it would bring the idle down to correct revs, so £100 later a new pedal assembly had been fitted, and it worked fine! but 2 weeks down the line its started its old tricks again! any ideas?

Cheers Duncan.

I had the same problem this morning the glow switch for warming the spark plugs was on I turned that off instantly went down from 1500rpm to 800 where it should ne

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chris vince

· #12 · 5 d ago

Mattj61 said:
I had the same problem this morning the glow switch for warming the spark plugs was on I turned that off instantly went down from 1500rpm to 800 where it should ne

1. NO spark plugs on a diesel D22, you mean glow plugs
2. The switch you refer to is the high idle switch, nothing to do with the glow plugs, it's for warming the engine up by temporary raising the idle speed

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