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losing power and stallin

J

jessica lavoy

New member
my gtp sc feels like a crapy 4 cylinder and it stalled twice at highway speed and one time when i put it in neutral it started itself back up??? occasionally ill start it in the morning it shuts off a sec later starts back up and does it again. also the engin sometimes makes a loud knockin noise and when i change the oil it stops. i have an evap code p0440. and had a cyl 4 misfire code that went away. i have replaced: plugs wires pcv, battery, alternater, icm(twice) and coilpacks. today i cleaned the maf. im sure im forgetting about something there is so much wrong. im also gonne replase the crank sensor this weekend-pain in the butt. any suggestions? besides getting rid of it, lol thanks :confused:
 
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also i forgot my coolant got low and the low coolant light came on and it was running a little hot. there no signs of a leak. i topped it off the light went off but it is still running too hot.
 


Did you bleed the air out of the system once you refilled with coolant? It's just that small screw on top of the coolant return elbow/tstat housing.
 


so today the ses light came back on code p0440 evap emitions control system malfunction. could this be causing the stalling and the lack of boost power? it seems like the power comes and goes. one min i hit 90mph in a couple seconds and then usually im struggeling to make it up to 60mph? any suggestions?
 
evap emitions control system malfunction
thats usually something to do with exhaust or intake from my experiences with other cars
 


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