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Author Topic: Won't rev past 4000 rpm  (Read 3684 times)

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JayUK

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Won't rev past 4000 rpm
« on: 22 February 2008, 23:07:02 »
Hi all. I've just picked up a car for my charity rally in April.

It's a 1995 3.0 Elite in good nick etc.

However, driving home I put my foot down to overtake and the auto box kicked down, but when the revs got to about 4000 it cut power and started bouncing the revs up and down! Eeek I thought!  :o

Anyways, I tried revving it after pulling over and in N it won't rev past about 4000, it bounces up and down like there's a rev limiter.

A little concerning, it was bought privately and the guy I bought it off said it hadn't happened to him. Soooo....

Any ideas? Please don't be an expensive fix!  :-[
« Last Edit: 22 February 2008, 23:08:01 by JayUK »
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Matchless

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Re: Won't rev past 4000 rpm
« Reply #1 on: 22 February 2008, 23:23:59 »
Cam sensor.

Does the EML work?
« Last Edit: 22 February 2008, 23:24:31 by Pete »
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JayUK

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Re: Won't rev past 4000 rpm
« Reply #2 on: 22 February 2008, 23:31:22 »
No EML light, no check lights, everything's peachy apart from the not revving part :|
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Matchless

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Re: Won't rev past 4000 rpm
« Reply #3 on: 22 February 2008, 23:34:04 »
Yeah, but does the EML come on when you switch on ignition and go out independantly of the oil light?
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JayUK

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Re: Won't rev past 4000 rpm
« Reply #4 on: 22 February 2008, 23:35:56 »
Oh sorry - Ummm, Yes,  I think the EML light comes on and then goes off. I will check tomorrow, but I'm pretty sure it lights then goes off
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omega_elite

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Re: Won't rev past 4000 rpm
« Reply #5 on: 23 February 2008, 00:04:38 »
Hi

I had the same problem with my omega and it was the crank shaft sensor. I got a new sensor from ebay for about £25 and it takes ago an hour to change if you access it from under the car. Hope this helps
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JayUK

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Re: Won't rev past 4000 rpm
« Reply #6 on: 23 February 2008, 09:27:04 »
 :y

Thanks for the heads up. I've got a local garage that I use, and intended to drop it into them anyways for a good look over.

I'll ask them to change the sensor, and hopefully it'll all be hunky dory.

Apart from the revving issue (Which is pretty major!) everything else works fine :)
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MutantCav

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Re: Won't rev past 4000 rpm
« Reply #7 on: 23 February 2008, 09:57:55 »
Seen this issue a few times on posts, cant remember for sure what the resolution was but crank shaft sensor could well be it :)
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rickyboy

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Re: Won't rev past 4000 rpm
« Reply #8 on: 23 February 2008, 12:52:46 »
The revs are limited when there is either a cam or crank sensor fault.  I imagine replacing the crank sensor will fix it, if not then it'll be the cam sensor.
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MutantCav

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Re: Won't rev past 4000 rpm
« Reply #9 on: 23 February 2008, 13:12:05 »
I have a 95 Elite cam sensor here if you do need it...but most likely worth checking the crank sensor first...
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JayUK

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Re: Won't rev past 4000 rpm
« Reply #10 on: 23 February 2008, 13:16:28 »
I've done a bit of digging and it seems advice is to replace them both!  So that's going to be my plan.

Hopefully that's it, as I don't really want to spend too much on it. I'll only keep it a couple of months!   :-?

www.imagineeruk.com/2amigos
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MutantCav

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Re: Won't rev past 4000 rpm
« Reply #11 on: 23 February 2008, 13:18:24 »
Well I have a working cam sensor you can have for £7 delivered if you want as I know its for charidee! :)
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caolan_p

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Re: Won't rev past 4000 rpm
« Reply #12 on: 23 February 2008, 13:58:48 »
mine was going the same would not go over 4500 rpm got a new cam sensor its going great now ,i paid £70 for it , is there one you can get for £7? and is it a vx
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MutantCav

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Re: Won't rev past 4000 rpm
« Reply #13 on: 23 February 2008, 14:01:29 »
Yeah mate, its genuine Vaux off a 95 Elite...why £7...because its for charidee and its sitting around spare :)
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caolan_p

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Re: Won't rev past 4000 rpm
« Reply #14 on: 23 February 2008, 14:03:32 »
nice one  :y
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