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hello Volvo people,
We have a problem with a V70 xc with 5244 T engine.
De car has 3 fault codes in the computer false air,trottle and accelerator.
De cars drive bad and the ets (trottle or accelerator) bulb goes one.
Few times later de motorengine bulb goes one.
The customer coms to us and we read the computer but now drive the car good. The fault codes are not permanent but temporary and bold bulbs are out.
we wipe the codes out of the computer and the cars drive about 500 km good.
Today the customer coms with his car. he said: that the cars drive bad this morning for a few km. Also this time the same codes but also not permanent.
This time drive the car also good. We look to an air leak but we find any leak.
The engine oil is very black and under the oilcap it is very durty.
We have changes the oil about 2000 km ago.
I think now that the problem is durty trottle house and bad compression.
What do you think? Have I richt?
I hope that you could help me.
Greetings Frank NL
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