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Author Topic: Help! Car wont start  (Read 8993 times)

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eco16v

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Help! Car wont start
« on: 24 October 2010, 15:03:26 »

Car has had a slight hesitation under acceleration since I bought it, put it down to the throttle needing cleaned out, cleaned it last night and everything running fine. Started fine this morning but cut out when slowing for traffic lights, would not restart so pushed it round the corner and let it free wheel down a hill and turned it over again and it started. Ran fine the rest of the way home then died when slowing to turn into the driveway, free wheeled down the drive and it started again.
Left it for half an hour or so then went to go out again and all it will do is turn over but wont fire.
Any ideas what might be causing this?
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Diamond Black Geezer

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Re: Help! Car wont start
« Reply #1 on: 24 October 2010, 15:27:10 »

DIS pack?

Feel free to shout me down anyone if I'm wrong!
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eco16v

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Re: Help! Car wont start
« Reply #2 on: 24 October 2010, 15:49:38 »

Was reading another thread about non starting and realised I could have disturbed the crank sensor wire as I was replacing the pollen filter as well last nite. Could this be the problem?
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Re: Help! Car wont start
« Reply #3 on: 24 October 2010, 16:05:59 »

Worth a go.

If thats the problem you may plug it back in and find no difference. Be aware these get old and the internals fail. It may look 'fine' but in reality is the cause of the problem. Certainly a better bet than changing the DIS pack just yet (can be costly and VERY fiddly to get to/replace).

although re-reading your post cant see how you've disturbed the crank sensor if you've been fiddling with the pollen filter -they're nowhere near! Still worth a try changing it, though.
« Last Edit: 24 October 2010, 16:07:05 by DiamondBlackGeezer »
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Andy H

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Re: Help! Car wont start
« Reply #4 on: 24 October 2010, 16:07:46 »

Classic crank sensor symptoms. The wire runs very close to the exhaust manifold and the heat contributes to its demise. Giving it a nudge might have been the final straw.

If you do the paperclip test to check for codes you will probably get a code 19. When mine failed (on a 1994 2.5) I didn't get a code but fitting a new (genuine VX) sensor fixed it. :y
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Andy H

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Re: Help! Car wont start
« Reply #5 on: 24 October 2010, 16:11:15 »

Read What is the Paperclip Test to find out how to do it.
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Diamond Black Geezer

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Re: Help! Car wont start
« Reply #6 on: 24 October 2010, 16:11:28 »

Yep. They can be little swines like that!

'There's no reason for it to be the crank sensor'
'So change the crank sensor'.
'Why? Don't be...Oh, that cured it.'
'No probs!'

happens a lot on this forum!
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eco16v

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Re: Help! Car wont start
« Reply #7 on: 24 October 2010, 16:13:15 »

How easy is it to get access to the crank sensor as a matter of interest?
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Diamond Black Geezer

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Re: Help! Car wont start
« Reply #8 on: 24 October 2010, 16:19:39 »

Check in the maintenance guides section. (I am old and lazy, so you'll have to look yourself!) but at some point you have to be on your back, as well as climbing all over the engine! (and near the crank, hence the name) It's a on-the-ramps job, though not so bad once you're there
« Last Edit: 24 October 2010, 16:21:59 by DiamondBlackGeezer »
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Re: Help! Car wont start
« Reply #9 on: 24 October 2010, 16:20:37 »

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Andy H

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Re: Help! Car wont start
« Reply #10 on: 24 October 2010, 16:26:00 »

Quote
How easy is it to get access to the crank sensor as a matter of interest?
I found it awkward but not a major job.

Front wheels up on ramps, wiper arms and skuttle panel off.

From underneath the car you need to get a torx socket on the sensor retaining bolt (the sensor is just behind the oil filter). The sensor should then pull out easily enough.

From above you can get at the plug.

The wire is usually trapped between the oil cooler pipes and won't come out so usually gets cut. Probably best to get the new one fitted and proved to be working before cutting the old one though.
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Re: Help! Car wont start
« Reply #11 on: 24 October 2010, 16:35:19 »

Quote
Quote
How easy is it to get access to the crank sensor as a matter of interest?
I found it awkward but not a major job.

Front wheels up on ramps, wiper arms and skuttle panel off.

From underneath the car you need to get a torx socket on the sensor retaining bolt (the sensor is just behind the oil filter). The sensor should then pull out easily enough.

From above you can get at the plug.

The wire is usually trapped between the oil cooler pipes and won't come out so usually gets cut. Probably best to get the new one fitted and proved to be working before cutting the old one though.

I agree. Just a matter of common sense, make sure you've got the right sensor, of course.. then ensure all's well before destroying/removing the one already in the car.
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Re: Help! Car wont start
« Reply #12 on: 24 October 2010, 17:12:37 »

Yep - sounds typical crank sensor failure mate - make sure you get the right one (oval plug or square plug - if yours is 1998 on likely to be oval plug) - and re-route down by abs block away from exhaust manifold. :y
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eco16v

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Re: Help! Car wont start
« Reply #13 on: 24 October 2010, 17:37:20 »

Just did the paperclip test, code 19 stored, looks like a crank sensor then!
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eco16v

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Re: Help! Car wont start
« Reply #14 on: 24 October 2010, 17:38:56 »

Is there any other way to start the car as its stuck at my parents house a few miles away from my garage! :-[
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