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Author Topic: Crank sensor on its way out?  (Read 1153 times)

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Brick Tamland

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Crank sensor on its way out?
« on: 29 November 2009, 14:18:22 »
Got a phone call from the old man last night, he said his 2.5 was revving on its own up as far as 5000rpm but went away after a while. Havent had a chance to look at it myself (not in this wheather anyway). Is it early signs of a crank sensor?

Its a 1998 gls and there's 97k on the clock and AFAIK it still has its original sensor so that must be a record ::)
« Last Edit: 29 November 2009, 14:18:42 by Brick_Tamland »
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Andy H

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Re: Crank sensor on its way out?
« Reply #1 on: 29 November 2009, 14:28:19 »
Petrol or diseasal?

The classic cause of diesels 'running away' is oil carry over from a blown turbo seal. :o :o
« Last Edit: 29 November 2009, 14:30:17 by andyh »
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Brick Tamland

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Re: Crank sensor on its way out?
« Reply #2 on: 29 November 2009, 14:32:15 »
Quote
Petrol or diseasal?

The classic cause of diesels 'running away' is oil carry over from a blown turbo seal. :o :o

Nope, it doesn't have a moustache and its not called Brian ::)
« Last Edit: 29 November 2009, 14:32:34 by Brick_Tamland »
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Andy H

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Re: Crank sensor on its way out?
« Reply #3 on: 29 November 2009, 14:46:01 »
AFAIK the crank sensor only ever causes a lack of go not too much.................

I would start by cleaning the idle control valve and breathers.
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Brick Tamland

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Re: Crank sensor on its way out?
« Reply #4 on: 29 November 2009, 14:51:33 »
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AFAIK the crank sensor only ever causes a lack of go not too much.................

I would start by cleaning the idle control valve and breathers.

Will do :y If it clears up that is :-/
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tunnie

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Re: Crank sensor on its way out?
« Reply #5 on: 29 November 2009, 14:52:34 »
Quote
Got a phone call from the old man last night, he said his 2.5 was revving on its own up as far as 5000rpm but went away after a while. Havent had a chance to look at it myself (not in this wheather anyway). Is it early signs of a crank sensor?

Its a 1998 gls and there's 97k on the clock and AFAIK it still has its original sensor so that must be a record ::)

No, Crank sensor failing symptons are the engine dieing, not restarting. then 10 mins later start ok.

I would be checking / cleaning the throttle body / butterflys
« Last Edit: 29 November 2009, 14:53:12 by tunnie »
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