1996 Vauxhall Corsa no power

JEFAS17

MEMBER
1996 VAUXHALL CORSA
6 CYL
2WD
MANUAL
88,000 MILES

Hi there, I have a vauxhall corsa b 1996 1.4 16v, has no power when you accelerate, takes a long time for it to 'rev up' I have replaced the crank shaft sesor, crank shaft sensor backet, idle valve, new air box, new map sensor new oil/oil filter, new fuel filter and still the same, however when you unplug the crank shaft sensor it revs up fine full power etc but wont rev past 4000 rpm, it is starting to cost alot on of money now and many garages are stumped, please help.

3 Replies

DAVE H

MECHANIC
13,383 POSTS

I suspect you have faulty wiring to the CKP (crankshaft position sensor) or the actual PCM (computer) is faulty and sending bad signals .. of course you could have been unlucky and the new CKP you have put on, could be faulty still ...when you unplug the sensor the PCM goes to it's default settings for the CKP, but will only allow the engine to run in limp home mode !!

hope this helps

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Thursday, April 16th, 2009 AT 7:39 PM

JEFAS17

MEMBER
2 POSTS

Thanks alot for your respose, would you say it needs a new ecu? Thanks

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Friday, April 17th, 2009 AT 4:52 PM

DAVE H

MECHANIC
13,383 POSTS

I would try swapping out the CKP again first ... also do a wiring and voltage check from CKP to ECU/PCM you should be able to get the voltage and OHMS spec's from a repair manual .. i do not have them as the vehicle was not released in the USA ... I would do this before spending 7/800 pounds on a new ECU ... let me know ?