1. While driving the car jerks while the gears are changing into 2nd and 3rd. I have an automatic transmission.
2. Recent buzzing sound coming from over head light compartment. Comes on in position two while starting car. Check bulbs and both look okay.
2. Coming out of a car wash or after pouring rain the engine mutters and runs rough until it dries.
3. Chronic Air Mass Flow Sensor replacement every year. Seems weird to me. I was told that there is a less expensive alternative by replacing a component of the sensor as opposed to the entire unit. MB mechanic stated I have the type that must replace the entire unit. Is this accurate?
Current issue:
Two weeks ago the check engine light came on. Codes found P0170, P0304, and 052 in DM and HFM Modules for self-adaptation at lower partial load, and misfire at Cyl #4. MB mechanic stated the Air Mass Flow Sensor needed replacing. This is a chronic problem every year around this time before my emission inspection. I changed the spark plugs on my own.
Check engine light disappeared after repairs, but the jerks are still present. One week later, it rained for about a half hour and the engine muttered as usual and ran rough until it dried. Check engine light reappeared during this episode.
Two days later the key hesitated to come out of the ignition. I changed keys thinking the first key was worn out or something. Got into the car the next morning turned the ignition … car started as usual and it does start now. Proceeded to put the gear stick in (R) reverse and the gear stick will not move out of park. Tried to pull the key out of the ignition and it would not come out.
I read some other threads on the Key Stuck in the Ignition and Stuck in Park but have never seen both problems at the same time. Tried some of the suggested processes of elimination to diagnosis it myself.
a. Try pushing the brake pedal harder than normal when you need to move out of Park.
b. Try pushing the emergency brake down, then pedal brake, then move the steering wheel.
Tried both and nothing worked.
What’s working:
Car starts and all electronics function.
Brake lights come on when the brakes are pushed.
Steering wheel moves, locks and unlocks normally.
Did manage to get the key out once while turning it several times. Became inspired afterwards and put it back in hoping all is well ... Key stuck again.
DIY - It was suggested to change the brake light sensor -to resolve the key and gear shift challenge. Did that - no changes. Most threads related the brake light sensor to an ABS error and dimming brake lights.
Purchased in 2001 at 86,000 miles
Water Pump ’04
Two weeks later – changed spark plugs, cable plug, suppressor P, vacuum line
Air Mass Flow Sensor – Annually
Oil Changes every 4 months – change to synthetic ‘04
Has a leak in head gasket – MB mechanic states to watch.
MAF and check the air box and tubes for leaks,it should not fail yearly.Spark plugs are way past due,they were not 100000mile plugs in 96,trans fluid needs to be changed along with the filter.The engine never should have been switched to synthetic,it flows more freely then oem oil and can find leaks in old engines that you would never see with the oem oil.You can change back and possibly rid yourself of the leak.
the trans problems,some of them will be helped by the proper fluid change,that trans fluid is long past it's useful life
Linear Mode
