Quote:
Originally posted by TomO
I now get engine code 7 as well (in addition to 2,5,6). I ordered a new coil yesterday.
I checked the egr valve. It clicked when I applied my hand vacuum pump (mytivac). I started the car and let it idle; when I applied vac to the egr valve the engine vibrated wildly, then smoothed out when I released the vac. Once the engine died when I applied vacuum. I could not see a red dot on my egr valve (supposedly red dot indicates improved valve).
When I get a chance I'll clean out the egr pipe from the valve end. I can't see anyway to access the egr pipe at the intake manifold except by removing the throttle linkage, and I'm afraid I'll never be able to reassemble it. I think I'll wait until I replace the head gasket to look at it.
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Code 7 is ignition system..so, you now want to go to pin 8 for specific ignition code fault.
If the car ran very rough and actually stalled when appling vac at idle, I doubt you have tube blockage. A block would show little difference when energizing egr..