Idling problem with a 1997 Audi A4

I have an Audi A4 2.6 and it has done 207,000miles. I had been fine for ages but over the last 500 miles it's got a problem with revving up to 1500rpm on start up. Then it was reving 1500 to 1800 and bobbing by itself and when driving.

It seems to be intermittent. I have used a fuel cleaner, but maybe it's just crud in system? Thought I'd ask if you can help, as the car only worth £500 and I haven't money to spend diagnosing.

Asked on 18 April 2012 by adrenalin

Answered by Alan Ross

Well although not worth much, it may still be best to have a diagnostic check carried out as this should highlight what the fault may be. Could be one of the many sensors. A diagnostic should cost around £60.

Without a diagnostic you may finish up changing other parts/sensors and wasting time and money.

A reader has suggested another possible cause could be the engine temperature sensor.

Tags: technical issues idling old cars

Similar questions

Starting issues with an Audi A4

I have an Audi A4 TDI 96 plate. I've had the battery and starter motor changed and still can't start it. When the key is in the ingition all the lights on the dashboard come as normal and then go off...

Citreon Saxo 1.4 Westcoast Poor running and Idle problem. Reving up and down

My son has a 1.4 Citreon Saxo West Coast. Two weeks ago it developed a fault with the engine revving higher than normal. It was plugged in and no fault found. Since then, all sensors have been removed...

Engine Problems

I have a Fiesta Mk IV Zetec 1.25 Ghia 1999 (T Reg). I seem to have two problems and I am not sure if they are related or not. Problem 1 - The car has developed a fault where it 'judders' when under acceleration....