Engine has had issues lately starting. Usually takes 3-5 attempts to start. I notice the shutter valve closing but after a split second it opens. I have checked the vacuum all the way back to the intake manifold, tested the idle air bypass valve and all check out ok.
Today running at 5000 rpm, the engine started surging down to 3200-3400rpm then back up to 5000rpm (like a fail safe mode), check engine light came on and a 1sec on/ 1sec off repeating tone. Any ideas?
Today running at 5000 rpm, the engine started surging down to 3200-3400rpm then back up to 5000rpm (like a fail safe mode), check engine light came on and a 1sec on/ 1sec off repeating tone. Any ideas?
