Flashing CEL/ reduced engine power
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
Flashing CEL/ reduced engine power
Alright my car was fine exept I would sling belts, then I couldn'tdrive my car for two months. Only mods I've done since were a cartek flip drive, electric cut outs, and went from a msd boost a pump to a kb boost a pump. Car would misfire when I would step on it under heavy load ~ 70 in third. Only codes I got were battery related though so I thought the problem was the loose ac belt I had which turns the alternator. After I replaced the belt I notice one of the o2 sensors wasnt connected and needed to be replaced. Got my car today thinking my flashing CEL and misfiring would stop only to find out it hasn't. I'm not sure how to fix this problem.
mods are... Ecs sc600, lg pro long tubes, alky kit, kb bap, qtp cutouts, flip drive, few other mods. car was dyno tuned and had 600 hp about a year ago.
mods are... Ecs sc600, lg pro long tubes, alky kit, kb bap, qtp cutouts, flip drive, few other mods. car was dyno tuned and had 600 hp about a year ago.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
Alright cleared the codes and took the car for a spin. Put into REPabout 3 times, but produced no codes at all. With the cutouts open it sounds like its misfiring, with them closed can't hear anything just see the flashing cel.
Tech Contributor
Joined: Jan 2007
Posts: 19,456
Likes: 1,165
From: Dyer, IN
Can you map the cylinders with EFI live, like on a tech 2? It should be easy to isolate if so. If not, start looking at the standard stuff i.e. plug wires,listen with a stethoscope to the valve covers, pull plugs to isolate cylinder, etc.
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Melting Slicks
Joined: Jan 2004
Posts: 3,225
Likes: 0
From: Currently living in and loving... Chico, CA
Just off the wall, how's your fuel pump pressure?
Reason I bring that up is because the last time I got a flashing CEL and misfiring ('99 Tahoe), my fuel pump was getting ready to check out.
Reason I bring that up is because the last time I got a flashing CEL and misfiring ('99 Tahoe), my fuel pump was getting ready to check out.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
As far as the fuel pump, I believe its fine, you can heart it and my boost a pump turn on when I turn the key to on position.
