Lumpy as me old grannys custard!!
Discussion
Help! Since buying my griff last week it has idled like a bag of sh&*e. The previous owner said the stepper motor was knackered. Ive took it out and cleaned it (no joy). The problem seems to be more when the cars hot though. At 1100rpm tickover the car hunts and runs really lumpy and on occasios will not tick over at all. I have disconnected the Stepper motor and tried to adjust the air flow meter but this seems to make no difference. Are these simpoms concurrent with a duff stepper motor or should i be looking elsewhere. Ive tried an air flow box from a V8S on the car - no difference. The car is a 4.3 and has a semi wild cam in it. It apparently has a Mark Adams chip and head work. Any thoughs would be appreciated.
Silly question if you've borrowed the AFM from a V8S can't you try the stepper as well Can you hear the stepper make a noise particulary when switching off i.e. a little buz when swtitching of , just proves the stepper is alive but not necessary OK though. Is the base idle set ok on the bypass on the plenum? (only to be done once your happy hte stepper is OK otherwise the ECU will chase it's own ass (as it may already be doing).
Finally as you've already said it does have a wild cam fitted, whilst this will give you a ragged tick over it should not give ou an erractic one. All IMHO and certainly not definative or probably acurate .
Harry
Finally as you've already said it does have a wild cam fitted, whilst this will give you a ragged tick over it should not give ou an erractic one. All IMHO and certainly not definative or probably acurate .
Harry
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