496 HO breaking up @ 3000 rpm
#1
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Join Date: Dec 2006
Location: Martinsburg WV
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496 HO breaking up @ 3000 rpm
Got a 2003 Sonic with 496HO. Took it out for the first time this year and it would not go above 3000 rpm. Thought it was fuel related because it was surging so changed the inline filter bypassed the fuel switch and still surged. Replaced the fuel pump on the port side and it will go to about 3500rmp than breaks down. Anyone had this problem? Please HELP!!
#2
Possibly in guardian mode? I'm not sure about the surging though. You need somebody to check the ecm for codes. Sill question, but is the drive resevoir full? One of my motors was limited to 3K due to low level in the resevoir, but I also had an alarm. Does the buzzer go off key on, engine off?
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