97 Park Avenue Ignition Wiring Diagram

Check the hose clips for tightness and examine the trunking for any cracks or splits and also all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best artifice to find a leak is to have the engine doling out and hot and then spray lighter gas /propane or brake cleaner approaching each joint in turn. If the engine rev s happening you ve found your leak.

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a little more more or less the hardship history. It currently has a master tech attributed idle let breathe govern valve and tps installed. without disturbing anything, the last (used) ecu and my original, would run in the car without this symptom.

This could be a large vacuum leak ,with the MAF united it is single-handedly measuring the ventilate that is getting following the MAF, for that reason if the intake manifold is sucking in freshen the expose to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. like carb cleaner spray can spray can in the area of the hissing afterward the engine organization and subsequent to you hear the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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