2005 Fabia VRS intermittent misfire

[giandougl]

Have an annoying intermittent misfire resembling two cylinders working/firing when the car is being driven slowly at low revs, approx 10mph..

First thing, car shudders as goes from normal working on 4 cylinders down to what seems only 2 cylinders.

Revving the engine does nothing to increase revs, no warning lights are lit on dash-board.

 

Releasing the throttle pedal altogether, while it's still misfiring, engine will go from 2 cylinders working back-up to 4 cylinders, and from then on everything is normal.

 

Also recently, starting the engine from cold, after the glow-plugs light go out, is quite normal, but, when engine very warm/hot the engine will spin over quickly but not start until after 6 -7 spins of the engine.

 

I have read on this site it could be a Camshaft sensor, but have no idea where to locate or if within my DIY capabilities, or whether special tools are required.

 

At this moment in time, I just wish the dam thing to totally break-down so I could get the garage to pin-point problem and fix...

 

Welcome all members with plausible help, thank you..

Edited 4 March, 2016 by giandougl

[vindaloo]

Scan it....

[hutchysrs50]

Basically best to get it scanned.

Could be camshaft problems, wiring loom for injectors or somthing els.

[giandougl]

Just had the car scanned and told (as members on this site predicted) camshaft sensor was the problem..

New sensor fitted, bill for £160.00 in total, which includes £59.00 labour , £35.00 for scan, £39.00 sensor and £26.00 for the old VAT.

If in hindsight I knew where the dam sensor lived. and didn't need any special tools I would have fitted myself..LOL

Too little too late..eh?

[vindaloo]

Just had the car scanned and told (as members on this site predicted) camshaft sensor was the problem..

New sensor fitted, bill for £160.00 in total, which includes £59.00 labour , £35.00 for scan, £39.00 sensor and £26.00 for the old VAT.

If in hindsight I knew where the dam sensor lived. and didn't need any special tools I would have fitted myself..LOL

Too little too late..eh?

 

On a 2005 car I wouldn't bet that everything would be so easy. Snapped bolts and heat hardened wiring could so easily casue more problems if you haven't got the extra nouse. (I don't BTW).