The service techs who work on my car are pulling their hair out over the problem - a very intermittent hesitation when the car is first driven.
The car is a 1995 Olds 88 with the 3.8L engine with just over 75,000 miles on it. A couple of months ago it developed an occasional hesitation while first driven, or sometimes a rough idle before I back it out of the driveway. Won't do it on a regular basis; the car might run fine for several days, and then the problem occurs. Usually it only lasts for 10 -
15 seconds close to home, although it did act up once while stopped in traffic about a mile from home - it felt like the engine was going to die, but kept chugging. Not much happened when I stepped on the gas, but after about 20 seconds the idle smoothed out and I could accelerate. Car went to the garage after that incident, and the techs have encountered the problem, but are still trying to figure out the cause. Oh and one time while the car was misbehaving in the driveway, I popped the hood, in case I could see anything. While the idle was going up and down, I did hear a loud mechanical snap, and the idle smoothed right out.Here's what has been checked, so far: no check engine light when the car hesitates, and no trouble codes stored. They suspected a fuel pump problem, however, they did get the car to fail with a pressure gauge hooked up, and eliminated a fuel problem from the pump. Possible electrical ground problem, but that didn't solve it either.
They did give the car a tune up; they said the wires looked a bit old, although they were (supposedly) changed back in 2001 around 55,000 miles by an Olds dealership that I stopped doing business with.
Anyone have any thoughts or ideas on this? I'd welcome suggestions on this, since the techs have had the car for several weeks, and would love to get it back to me. I understand intermittent problems are hard to track down; I've had experience in the computer and electronics repair industry so I'm giving them as much time as it takes to find the problem.
Thanks for any input. Bob.