Thanks for the reply and the help. When I accelerate there is no black smoke.
"James Sweet" wrote: > RPGCRAZY wrote: > > Hi I have a Volvo 940 (1991 turbo model) > > > > It starts first time every time but today it seems to have > lost a lot > > of power. The turbo kicks in but seem to stutter (best way I > can > > explain it) > > > > It will only go upo about 75mph whereas it used to do over > 100 with no > > probs. > > > > Is the turbo broken or is there something else wrong with > the car? > > > > > Does the boost guage go up normally? If so then the turbo is > fine. > > I've seen several things cause this problem, fuel pressure > regulator, > air mass meter, split in one of the air pipes or couplers > between the > turbo compressor, intercooler, and throttle body. Clogged > catalytic > converter can cause it too. Do you get black smoke out the > exhaust when > you accelerate heavily?