Idles rough, stalls
In order to troubleshoot this, you must start with a clean engine wipe down.
The major offender parts are
air intake gasket on the manifold
air tube after the mass air flow sensor
rubber seal under idle air control IAC motor
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Warm up the engine for 15-20 minutes (LEAVE THE engine at idle) then
spray a little Barmen carburetor clear on the potential air leak
location (ONE AT A TIME) and listen for a surge in rpm.
If the engine speed go higher that's mean the carburetor cleaner
(ADDITIONAL FUEL) got into your engine and that's the gasket you need
to change.
There may be multiple leaky spots so take your time and check all
rubber gaskets,sensor and hose that are lead into the intake manifold.
When you finish fill up with one tank of Chervon to clean out the injectors.
Try to get a toque wrench and tighten ever bolt on the valve cover back
to specification. If you can not get hold of one then just give
each bolt a gentle 1/6 turn.
Please post more information after your inspection.
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