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Location:
Sydney Australia
Registered:
March 2005
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7M-GTE Knock sensor fault
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Thu, 27 October 2005 15:02
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Hi,
did the conversion preserving all the original 7mgte wiring and ecu and i keep getting a knock sensor fault if i rev the car to 4000prm or if i drive the car and it reaches bout 2500rpm, the loom was never cut between the ecu and sensors, continuity shows these cables are good, and i have replaced both knock sensors.
the engine seems a little hesitant when i accelerate too as if its holding back, boost is fine, and i run 98 octane fuel on it.
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Registered:
October 2005
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Re: 7M-GTE Knock sensor fault
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Fri, 28 October 2005 01:39
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I guess it could be possible that there's a loose/worn big end bearing. It'd make a similar sound to a sensor designed to pick up clashing of metal on metal. Perhaps you should ask a toyota service centre what they normally associate knock sensor issues with.
Bad earth?
ECU fault?
loose internals?
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Location:
Perth
Registered:
January 2003
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Re: 7M-GTE Knock sensor fault
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Sat, 29 October 2005 04:30
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Common fault. Rewire the knock sensor with shielded cable. There are instructions on SOGI or Supraforums, just search Google.
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Location:
Sydney Australia
Registered:
March 2005
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Re: 7M-GTE Knock sensor fault
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Mon, 14 November 2005 12:25
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Found it..
It was the COAX cable. to the knock sensors. must be intermittent and the wires were all green and corroded on the inside.
Replaced it with some RG-58 (being a CB junkie helped) and the faults are gone !!!! no more check engine light.
Would have to say after that and a bit of timing adjustment there is *heaps* more power without hesitation.
Thanks Heaps.
I would have to say i went over and over everything when doing my car mod and i was disappointed over its performance.. im now happy. now just a boost controller... and gotta do somethign bout the clutch
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