1995 E320 bought from Dad getting 18mpg :-(
Hi everyone! I have not posted in a while but have an issue that I hope you all can help--my mileage sucks! I bought this car from my Dad who had forewarned me of this drop in mileage (he claims to have always gotten 20+ mpg until this happened) and also told me about a racket that happened at start up. I've determined this is the smog/air pump in the throes of death and wonder if the two are related? I intend to follow the advice of some on these forums and remove the air pump and use the smaller v-belt...anyone up for the part number?
Here are some more specifics: rich smelling exhaust at all times; mechanically-inclined Uncle claims to have replaced the O2 sensor in the last year or so; wiring harness replaced; no CEL, although should the CEL light on key-on? If so, my bulbs missing :-( or burned out.
Just had it in for 150K service to the dealership and they replaced fuel and air filter, spark plugs (stated that incorrect plugs were in vehicle) and to check mileage. I doubt they did any significant research on this issue even though I told them of the poor mileage and rich smelling exhaust.
I've read about replacing the O2 sensor and unfortunately have been unable to follow the posts about how to test it...I can't seem to keep straight the ground this, jumper that and measure the millivolts across the source but not the heater wires :-) Also, not sure if the O2 sensor is in the exhaust or under the passenger carpet? Replacement appears to be easy..."15 minutes, tops. jack up the car, heat up the exhaust, screw out the old one and screw in the new one...", yeah right! While I claim no aptitude at being a mechanic, I do like to be able to research and solve problems on my car while saving money!
Anyway, at 18mpg (about 70/30% city/highway) and $2.47/gallon it's getting expensive to drive and I might as well take advantage of the employee discount and buy that new truck that gets 18mpg and will pull my travel trailer as well!
Last thing...the car seems to consistently run at the mark above 80 (is that 100?) and I've read that running hot is not good but don't know if that has any impact on the mileage issue.
Okay, I've rambled enough and thank anyone in advance of your help--I really appreciate it! Mike
Last edited by scarbrm; 08-06-2005 at 04:03 PM.
Reason: add percentage of city/highway to achieve mileage
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