EVOnation

hi guys

i got a werid code today, when i looked it up it says "fuel trim malfunction"

anybody knows what the hell that is?, the car starts and runs pretty good, Its a 97 e 320 with only 28000 miles on it.


somebody please let me know

pete

lexrex

It's telling you that your air/fuel mixture reading is outside its "normal" range at idle and/or partial throttle. According to AllData, possible causes include intake air leak, injectors, diaphragm pressure regulator and engine wear.

The normal range can be reprogrammed by driving for 30 minutes. The coolant temp at startup must be less than 60 degrees C (i.e. completely cold).

Barada

Possibly the Mass Air Flow sensor. Those go out all the time.

EVOnation

thanks guys

who sells maf at the best price?

Im also looking for tie rods, whats the best source?

slilley

I can't help with the tie rods, but I can for the Mass Air Sensor. I had the same code about 6 months ago, and I ignored it (and the CE light) until one day when I was trying to accelerate hard on the highway, and the car bucked like it was having a transmission problem. I guess I don't floor the car very often, but after reading about the P0170 symptoms, I gave it a shot. It's been problem-free ever since.

See http://www.mercedesshop.com/ Under FastLane's Special Order Parts, order #1120940048. It was $299.00 delivered.

Regards,
Steve

HTBenz

Do a search on this forum because you should not pay more than around $160 for the meter with free shipping.