Vauxhall Zafira loss of power
Variant: 20dti
Model Year: 2001
Categories:
Running Rough, Starting & Power Loss
I have change the crank sensor and cleaned the egr valve it runs ok but when rev it up it has a flat spot at 3000 rpm or when you drive it i have a loss of power when pulling and up hill its ok on the flat once you got it going
Posted: Feb 25, 2013 (11 years ago)
Any codes logged?If not then as it,s happening under load condition ,is it fuelling correctly and is the turbo working,I'm thinking turbo control valve.
Posted Feb 25, 2013 (11 years ago)
I have read the codes and i have got p0725 and p0400
Posted Feb 25, 2013 (11 years ago)
Check this re.codes
" P0725 Engine RPM input; circuit malfunction.
P0400 Critical system malfunction. [Poss. EGR-related; but needs the sub-code to ID exactly.]
Before you do anything else; verify, with a scope, that the crank sensor is producing the correct waveform and that it's reaching the main and pump ECUs uncorrupted.
If both ECU feeds and earths haven't already been done [if not; why not?] then they should be verified first. Feed relay faults are not unknown. "
" P0725 Engine RPM input; circuit malfunction.
P0400 Critical system malfunction. [Poss. EGR-related; but needs the sub-code to ID exactly.]
Before you do anything else; verify, with a scope, that the crank sensor is producing the correct waveform and that it's reaching the main and pump ECUs uncorrupted.
If both ECU feeds and earths haven't already been done [if not; why not?] then they should be verified first. Feed relay faults are not unknown. "
Posted Feb 25, 2013 (11 years ago)
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