QuestionI have a 91 740 Turbo wagon, when I hard accelerate, to the floor, it powers on, then dies. Normal acceleration (not hard) is OK. It seems to be starving for something. I checked the Air Mass meter by unplugging it, it ran very rough unplugged, I was unable to drive at speed with the meter unplugged.
The car used to have an issue that when I would hard accelerate while at highway speed, it would also hit a "dead zone", I'd have to let up on the pedal for a bit, and it would be OK. I thought that might be a trans. solenoid thing,and kind of just lived with it, it was a rare issue. Now the issue is there at any point when the pedal is put to the floor, so whatever it is, it got worse.
I don't mormally drive hard, I was letting someone test the car before buying, they wanted to get it on the highway and floor it, which I was OK with....I'd want to do the same thing.
My fuel pump is audibly whining these days also, could that be a source, low fuel supply?
AnswerGreg,
Yes low supply of fuel, blocked filter, bad feed pump, fuel pressure too low, restricted pressure or return lines, plumbing to and from intercooler and turbo not secure. Something on those lines, you need to do maintaince catch up and some testing of pumps and pressures.
