Passat V5 2.3 Petrol Owners – Please Help
Discussion
I have a cherished year 2000 V5 estate 114k miles.
It has developed a misfire and lost a substantial amount of power.
Much £ already spent on investigation, testing by reputable workshop including new coil packs but unfortunately the misfire / no power issue persists
Has anyone experience of this ?
I’d be very grateful to receive news of a solution.
Thanks for your consideration.
James.
It has developed a misfire and lost a substantial amount of power.
Much £ already spent on investigation, testing by reputable workshop including new coil packs but unfortunately the misfire / no power issue persists
Has anyone experience of this ?
I’d be very grateful to receive news of a solution.
Thanks for your consideration.
James.
Thank you for your feedback, the updates are very much appreciated !
WORK CARRIED OUT | WORKSHOP APPRAISAL
Long Life service
Tested spark plugs and checked coil packs, all ok.
Removed, cleaned and adapted throttle body.
Checked engine compression, all good.
Supplied and fitted new coil igniter pack as required.
FAULT CODES
I’ll have to check with Deutchtek (workshop) on which codes showed up.
No warning lights visible on dash now.
TEMPORARY FIX
Once the new coil igniter pack was fitted there was a notable reduction to the misfire, the power returned and only the slightest hesitation notable in the engine.
BODYSHOP | FLAT BATTERY JUMP
When at Bodyshop battery ran flat which was jumped with a pack.
Unfortunately the misfire and loss of power returned worse than ever.
MISSFIRE | CONDITIONS
On Start Up. Starts perfectly, unfortunately idles like a Harley Davidson.
Misfires within 5 – 10 mins driving.
Misfires under load.
Overtaking now not possible.
Your thoughts ?
WORK CARRIED OUT | WORKSHOP APPRAISAL
Long Life service
Tested spark plugs and checked coil packs, all ok.
Removed, cleaned and adapted throttle body.
Checked engine compression, all good.
Supplied and fitted new coil igniter pack as required.
FAULT CODES
I’ll have to check with Deutchtek (workshop) on which codes showed up.
No warning lights visible on dash now.
TEMPORARY FIX
Once the new coil igniter pack was fitted there was a notable reduction to the misfire, the power returned and only the slightest hesitation notable in the engine.
BODYSHOP | FLAT BATTERY JUMP
When at Bodyshop battery ran flat which was jumped with a pack.
Unfortunately the misfire and loss of power returned worse than ever.
MISSFIRE | CONDITIONS
On Start Up. Starts perfectly, unfortunately idles like a Harley Davidson.
Misfires within 5 – 10 mins driving.
Misfires under load.
Overtaking now not possible.
Your thoughts ?
MAP or thrust sensor, can you read and log the specified / expected vs actual values for this? Not entirely sure about this but a lot of VAG petrol engines have these sensors which measure inlet vacuum instead intake air flow for fuelling and mixture settings. Again, I don't know enough about the V5 engine or if it has this setup.
Wildcard - Fuel pressure regulator.
Wildcard - Fuel pressure regulator.
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