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Car Forum / BMW Cars / April 20071988 E30 325i problem
have the engine gasket replaced and valves adjusted recently, but the car is hesitated each time I accelerate and the engine is shaking when idle. any ideas? thank you Godz > have the engine gasket replaced and valves adjusted recently, > but the car is hesitated each time I accelerate and the engine is shaking > when idle. Vacuum leak or an ancient distributor cap?  SignatureWho needs a life when you've got Unix? :-) Email: john@unixnerd.demon.co.uk, John G.Burns B.Eng, Bonny Scotland Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage! Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html www.Strathspey.co.uk - Quality Binoculars at a Sensible price > have the engine gasket replaced and valves adjusted recently, > but the car is hesitated each time I accelerate and the engine is [quoted text clipped - 4 lines] > thank you > Godz Bad or dirty injector? >have the engine gasket replaced and valves adjusted recently, >but the car is hesitated each time I accelerate and the engine is shaking >when idle. > >any ideas? Fuel filter is a good and cheap place to start, based on recent personal e30 experience. SignatureDan. thanks all, also, I find that the Oxygen sensor relay is missing...what is this means? I am trying to replace the relays there. "Dean Dark" <ddrake@comcast.notthis.net> ¼¶¼g©ó¶l¥ó·s»D:m87813d9rfit2u62pkj7rffjbfgusb4vp1@4ax.com... >>have the engine gasket replaced and valves adjusted recently, >>but the car is hesitated each time I accelerate and the engine is shaking [quoted text clipped - 4 lines] > Fuel filter is a good and cheap place to start, based on recent > personal e30 experience. > thanks all, also, I find that the Oxygen sensor relay is missing...what is > this means? I am trying to replace the relays there. The only thing that would be relay controlled on the Oxygen sensor would be the heater power. There is a little heater built into most modern sensors to bring it up to operating temperature faster. The exhaust gas is hot enough to get the sensor up to temperature eventually, but for emissions purposes designers want to minimize the time that the engine has to run "open loop" (without O2 sensor feedback) during warm up. Without the heater circuit you may get "check engine" faults occasionally about 4-5 minutes after a cold start. Signature-Fred W >> thanks all, also, I find that the Oxygen sensor relay is missing...what >> is this means? I am trying to replace the relays there. [quoted text clipped - 8 lines] > Without the heater circuit you may get "check engine" faults occasionally > about 4-5 minutes after a cold start. I'm pretty sure that the '88 325i did not have a heater on the oxygen sensor. The reason that the oxygen sensor relay is absent is probably because it was never installed. > >> thanks all, also, I find that the Oxygen sensor relay is missing...what > >> is this means? I am trying to replace the relays there. [quoted text clipped - 15 lines] > sensor. The reason that the oxygen sensor relay is absent is probably > because it was never installed. ----- My '88 325is did have a heated (4-wire) o2 sensor. It's possible that the previous owner (or crap mechanic) fitted a non-heated (1- or 2-wire) sensor and removed the relay. Even my '86 535i has a heated sensor. Check the sensor and see how many wires it has. Replace the relay. If the sensor needs replacing, you might try the Mustang sensor trick. $40 vs $100-plus for the BMW version and the only difference is the connector. Bill in Omaha '86 535i >> >> thanks all, also, I find that the Oxygen sensor relay is >> >> missing...what [quoted text clipped - 33 lines] > Bill in Omaha > '86 535i Pardon my error. I see on Ebay that the '88 325i does have a four wire connector on the oxygen sensor indicating that it does have a heater. http://cgi.ebay.com/ebaymotors/BMW-Bosch-Oxygen-Sensor-E30-325-13231_W0QQcmdZVie wItemQQcategoryZ46097QQihZ001QQitemZ110111474309QQrdZ1 |
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