1999 1.8 Audi A4 engine trouble
Discussion
A friend of mine emailed me this morning to say he's having some trouble with his car and wondered if I could help. Unable to offer any help myself I thought I'd see if anyone on here had any ideas.
Here's what I was sent
"When I start the car first thing in the morning it coughs and splutters and sounds as if it is miss-firing. This stops after a few mins but it then idles around 2500rpm, if you were to move the car before it has got to the increased idle speed it kangaroos. After a while it drives OK but with reduced power, because of this it has problems with hills, and won’t go above 3500rpm if it does feel like getting to above this it soon dies and the power goes until it reaches 2800rpm then it settles again. I have taken it to the local garage and it was put on the computer and no faults showed up. I have had the spark-plugs, oil, air and fuel filters changed and there was no difference. It’s only done 166,000 miles."
I don't suppose anyone else has had any similar issues or could shed any light as to what might be the problem? Any ideas or advise would be much appreciated, thanks in advance.
Here's what I was sent
"When I start the car first thing in the morning it coughs and splutters and sounds as if it is miss-firing. This stops after a few mins but it then idles around 2500rpm, if you were to move the car before it has got to the increased idle speed it kangaroos. After a while it drives OK but with reduced power, because of this it has problems with hills, and won’t go above 3500rpm if it does feel like getting to above this it soon dies and the power goes until it reaches 2800rpm then it settles again. I have taken it to the local garage and it was put on the computer and no faults showed up. I have had the spark-plugs, oil, air and fuel filters changed and there was no difference. It’s only done 166,000 miles."
I don't suppose anyone else has had any similar issues or could shed any light as to what might be the problem? Any ideas or advise would be much appreciated, thanks in advance.
It's quite difficult to make some suggestions. It actually sounds like it could be cuased by the timing being out to be honest. When was the timing belt last done? Were the tensioner and rollers changed at last belt change also. I've heard of knackered tensioners allowing the belt to jump a tooth.
Having said that, I would expect to see Camshaft position sensor codes as both the positions of the crank and inlet cam are monitored.
Having said that, I would expect to see Camshaft position sensor codes as both the positions of the crank and inlet cam are monitored.
Edited by stellacheersmate on Friday 19th March 15:52
Hello everyone,
new here so just to say hello and will try to help everyone if i can.
Ok idling problem on audi A4, ideally you should connect vehicle to computer and see if there are any stored fault and this may give the clue. Several things go wrong with this engines:
coolant temp sensor
Throtlle body dirty
Basic settings between throtlle body and acceleratio pedal incorect (only for fly by wire syste engines)
Breake servo pipe split and it draws unwanted air inside engine
breather hose somewhere partially split
Let us know how you get on
Thanks
new here so just to say hello and will try to help everyone if i can.
Ok idling problem on audi A4, ideally you should connect vehicle to computer and see if there are any stored fault and this may give the clue. Several things go wrong with this engines:
coolant temp sensor
Throtlle body dirty
Basic settings between throtlle body and acceleratio pedal incorect (only for fly by wire syste engines)
Breake servo pipe split and it draws unwanted air inside engine
breather hose somewhere partially split
Let us know how you get on
Thanks
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