E416 PBO Posted July 30, 2013 Share Posted July 30, 2013 Looking for yer views on this problem lads, I've a 2001 Corsa with a z14xe engine. If I rev the engine slowly on the street, It revs perfect. If I drive the car, put my foot down to accelerate, when the engine reaches approx. 2000rpm, it loses power for 2 or 3 seconds, feels lik its dead, then it revs another bit to approx. 2500rpm and repeats the problem & so on as I try to rev engine further. Any ideas at all? The car idles perfectly. No fault codes recorded. Luke. Quote Link to comment Share on other sites More sharing options...
Ben_g40 Posted July 31, 2013 Share Posted July 31, 2013 Blocked/rusty fuel filter? I know the metal ones are prone for collapsing in on themselves? Blocked Cat? Does it make a difference if driven nicely or thrashed? Quote Link to comment Share on other sites More sharing options...
E416 PBO Posted July 31, 2013 Author Share Posted July 31, 2013 I checked fuel pressure at the rail, its staying even. Took out 1st oxygen sensor, and checked for back pressure with a gauge,nothing building up! Its only revs fine upon the street if you do.it gently. If U do it had it seems to miss a little. If U accelerate gently driving, it only eases the problem a tiny bit. It U accelerate hard it multiplies the problem Quote Link to comment Share on other sites More sharing options...
toj28 Posted July 31, 2013 Share Posted July 31, 2013 have you tried the airflow meter 1 Quote Link to comment Share on other sites More sharing options...
dynamytedan Posted July 31, 2013 Share Posted July 31, 2013 yes airflow meter is common . and doesn't always store a fault . take it off and give it a blast with carb cleaner and an air line blower . Quote Link to comment Share on other sites More sharing options...
E416 PBO Posted July 31, 2013 Author Share Posted July 31, 2013 No air flow meter on them lads. Its a mystery this problem. Ive checked everything I can..just can't solve it. Im leaning towards an ECU fault Quote Link to comment Share on other sites More sharing options...
dynamytedan Posted August 2, 2013 Share Posted August 2, 2013 compression test coil breaking down under load maybe ... you probably checked that already . check resistances on cam/crank sensors ,lambda sensor or how about check the timing belt marks and condition of woodruff key on bottom pulley . have a look at live data , if the ecu is no good you will get spurious readings . has the car been standing ? petrol gone off ? is it fly by wire ? maybe a tps or throttle body ..... it could be anything hope you sus it Quote Link to comment Share on other sites More sharing options...
E416 PBO Posted August 4, 2013 Author Share Posted August 4, 2013 I can't see compression being a problem when it revs fine when not driving. I've put a different coil in, no change. I've recorded and graphed the injector opening times, the throttle body voltage, pretty much as much electrical stuff as I can and nothing unusual is showing. Throttle position sensor is not showing up anything wrong. this is becoming a PAIN!!! PLEASE HELP!!!! Quote Link to comment Share on other sites More sharing options...
andyc Posted August 5, 2013 Share Posted August 5, 2013 Is there any trace of oil coming out of the oil pressure switch connector? Cheers Andy Quote Link to comment Share on other sites More sharing options...
E416 PBO Posted August 6, 2013 Author Share Posted August 6, 2013 I'll check that tomorrow eve. What would that suggest if oil is coming out there. Thank you all so far for your input. Quote Link to comment Share on other sites More sharing options...
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