I'm new to this Forum. I'm from Long Island, NY. I have a '97 Q45 with 196K miles. I bought it 8 yrs ago with 76K. The only major part that has been replaced is the alternator, which was recalled and taken care of with the previous owner. I did a rather expensive tune-up at the dealer at 120K miles about 5 yrs ago. After my $1900 bill, I didn't return back. I've been doing regular maintenance at a local mechanic since. Throughout the years, all 4 O2 sensors needed replacement.
Lately, my car has been shutting off very frequently at idle, like at a red light. I replaced the fuel filter, air filter, cleaned Throttle Body, checked vacuum system and EGR. The problem of the car shutting off wasn't resolved until the MAF sensor was cleaned.
Now the car occasionally hesitates while depressing the gas pedal at any speed. It's usually more noticeable 40mph and higher. The best way to describe it is if the engine were to talk it, it would say "Ba Boom, Ba Boom." It feels like if you were in a night club with the DJ moving his hand back and forth on the record player. The car hasn't shut off or displayed a check engine light for any of theses problems, yet the check engine light bulb is working.
I was reading through the posts and one guy seemed to have a similar situation to mine. He had good coils but a bad boot. I haven't replaced my coils yet on this car because a bad coil should give a code and a check engine light, right?
I have one other minor problem. I never have a problem starting the car in the morning. Sometimes after driving the car for a while, like coming home from work, I'd stop by the gym. An hour or so later when I go to start the car, it will crank for like 5 seconds, maybe a little more before the car engages. It's been doing it for yrs. I've never replaced the starter. If this is a starter issue, why would it not reveal itself on a cold start in the morning. Did this occur to any one?
I love this car. I'd like to sustain it's life for as long as I could. Other than these problems, the car runs like it did when I first purchased it. Solid.
Any Suggestions for these symptoms would be greatly appreciated. Thanks!
Last edited by MisterEd
on Wed Jul 27, 2011 9:38 pm, edited 1 time in total.