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Re: 900S 2.0 NA stalls when warm !
Posted by Dean (more from Dean) on Wed, 14 May 2003 08:58:41
In Reply to: 900S 2.0 NA stalls when warm !, Croiss, Wed, 14 May 2003 08:23:22
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Fuel pressure regulators have been known to go bad after changing the fuel filter. Perhaps from the intro of dirt, but no one has done a failure analaysis on one yet.
Was the filter replaced before or after the problem started?
A worn or damaged pump can deliver pressure but not at the volumes required when on the throttle, then the pressure drops. A fuel guage taped to the outside of the window is used to check pressure when on throttle.
You need to clean the injectors. Use Techron Concetrate.
Check to see if there is a resistance from the 02 sensor body to a good known ground. Brighten metal for good connectivity if needed. You should get a faction of an ohm. A digtal multi meter is needed. The sensor's ground reference is via the exhaust system. Could be resistance at the sensor's threaded connection, or the pipe to manifold joint or the manifold joint to the head. A separate ground wire could be clamped to the sensor base with a stainless steel hose clamp as a fix.
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