I have a 1995 850 turbo wagon which runs great but the check engine light has been constantly on for about 3 months and I'm only getting about 17 mpg overall. Is this low--seems so to me? Mechinic didn't know why the light was on but said no harm was being done. Any suggestions?
I would say find a mechanic who can figure out why the check engine light is on, it's doing harm to your wallet if nothing else, you should be getting more like 25 mpg.
First suggestion: GET A NEW MECHANIC! There is a reason the light is on and a competent mechanic will read out the error codes and diagnose it. Find a real mechanic who is familiar with European cars, particularly Volvos, and get it fixed right. Most likely cause is a failed O2 sensor, but lots of things could be wrong. By driving with a rich mixture you are not only wasting gas but also putting the catalytic converter at risk as well as the rings. That said, don't shotgun and guess in the dark. Get the codes read by someone who knows what the **** they are doing. John
Presume that the engine has no power lack? Here are some suggestions: 1. When was the air filter changed? 2. Is the timing correct - sometimes the timing belt can jump one - two teeth? 3. Check the oxygen sensor(volvo garage work or a Bosch garage), the EGR valve and for vaccum leaks 4. Check the flame trap. 5. (Check if the brake calipers are hanging) Cheers Per
