Have checked with scanner, no codes. Replaced, maf sensor, purge valve, throttle body, and intake manifold gaskets. Has good fuel pressure. At a loss. Have also sprayed carb cleaner over every inch of the engine and have not found a vacuum leak.
What makes this problem better or worse?
Runs great if you in park or neutral if you keep over 1000 rpm. Anything that robs power from engine is. Ac on, makes it worse.
How long has your 2005 Saturn Vue had this problem?
RepairPal Certified shops can diagnose and repair your 2005 Saturn Vue. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, are there any diagnostic trouble codes set? I realilze this is an OBD-I vehicle, so testing isn't going to be as "easy" as OBD-II vehicle testing.
How is your PCV system? Have you checked for an exhaust restriction? Have you checked for cylinder compression in the engine?
I suspect - still - an air intake leak.
Hands on testing - continued - is needed.
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