would a bad pick up coil cause surging at idle and trigger a code 44 lean exhaust ?


Asked by Jul 15, 2013 at 09:15 AM about the 1988 Chevrolet Suburban

Question type: Maintenance & Repair

5 Answers

No, not the coil. IF you mean P0440 that is EVAP leak, possible a vacuum leak and the will cause idle trouble and lean trim, but your '88 has OBDI and the scanner needs to be a good, high end one to "translate"

1 out of 1 people think this is helpful.
Andrew Olsen

thinking vacuum leak or bad IAC. Code 44 is the GM OBD1 code for lean mixture detected by the O2 sensor. The coild would cause a miss fire and/or rich code


thanks andrew and david there is a brand new IAC new o2 sensor,new TPS new temp control sensor new plugs wires cap rotor fuel pump ,gas filter and i did go ahead and change the pickup coil,all to no avail.do you think the air pump could be the culprit ? thanks again,SUBURBANJEFF

Andrew Olsen

check for vacuum leaks, air pump probably not the culprit. Also check the spray pattern of the injectors for a nice cone shape


thanks andrew,injecters are spraying fine,checked everywhere for vac leaks,been through 4 cans of throttle body cleaner,guess i should check fuel pres. any other suggestions ? appreciate the help and thanks again

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