420A high rpms at idle

[95gsttsi]

Ok so I've looked in the forums and all I can find is 4g63 problems.. I recently swapped a bad head I've done everything to a t.... except I deleted the Carbon canister, plugged what vacuum lines that I didn't need.. no vacuum leaks also have a egr blockoff. But I had that b4 car is also tuned to 390cc injectors. The car was bogging out when I had 680's in it so I switched back to my 390's also fixed a leaking fuel line it revs up to about 2500 to 3k I've adjusted the tb swapped out tps's and nothi.g has changed

 

[kongo]

What fuel Management ate you running ?

 

[Jeff99GS]

If you recently changed injectors, check the injector seals for proper seating. If they are leaking it will cause the engine to intake extra air and idle fast.

 

[95gsttsi]

Ok ill check and its just ## basic fmu

 

[dsmcrzy]

Is your PCV valve hooked up correctly? Or at all? That would cause an idle that high.

 

[95gsttsi]

Is it the one that tags into the egr? My egr is blocked off everything is hooked up

 

[dsmcrzy]

No it comes off the valve cover on the left hand side of the cover and goes into the intake manifold.

 

[jayson427]

Pull out the Carb cleaner and start spraying until it revs up. You have extra air getting in there like jeff99gs said