diesel-smoke Posted February 27, 2013 Share Posted February 27, 2013 I recently had the head gaskets go on my 1996 3.9 v8, so duly stripped the top end down to repair. Both heads have been checked, skimmed, and refitted with new gaskets and bolts. I came to start the car for the first time, and although it started first time, it now imediately goes to max revs and stays there. I have checked and recehcked all electrical connections, hoses and pipes, and all are correct. Has anyone else come across this problem, or have any ideas what I should be looking at. Quote Link to comment Share on other sites More sharing options...
duncmc Posted February 27, 2013 Share Posted February 27, 2013 Stepper motor at the back of the pleunum stuck maybe? Or possibly what about the accelerator cable not adjusted correctly after refitting? Or something wrong with the AFM? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 27, 2013 Share Posted February 27, 2013 Disconnect both throttle and steeper Then what ?? Quote Link to comment Share on other sites More sharing options...
luke keeper of badger Posted February 27, 2013 Share Posted February 27, 2013 i have had the butterfly jam open in the plenum cheek movement luke Quote Link to comment Share on other sites More sharing options...
diesel-smoke Posted February 28, 2013 Author Share Posted February 28, 2013 Have currently got accelerator cable disconnected, and checked the flap is free to move and in the closed position. i have also tried with both the stepper motor and afm disconnected, and still the same. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 28, 2013 Share Posted February 28, 2013 You did seal the trumpet base to inlet and plenum to trumpet with proper sealer ? It can only either be mooossive air leaks and or mechanical jammed / set wrong Can you hold the butterfly closed when if starts and see if it still revs ?? Quote Link to comment Share on other sites More sharing options...
diesel-smoke Posted February 28, 2013 Author Share Posted February 28, 2013 I resealed everything with an RTV silicone sealant But whilst I have been trying to track down the problem, I've managed to snap the coolant outlet on the manifold, so waiting for a replacement to turn up. Quote Link to comment Share on other sites More sharing options...
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