Car runs rough after valve cover swap. I think I killed my ecm
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Supreme Member
Joined: Dec 2004
Posts: 1,204
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From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
Car runs rough after valve cover swap. I think I killed my ecm
Swapped valve overs for some edelbrock valve covers. During the swap I did something I almost never do I forgot to disconnect the negative battery terminal . So when I was taking the valve cover off it touched the positive cable nut that is on the back side of the alternator. It was sparking for about 5 seconds. Well my car feels like it's missing after now and it idle rough. Do you think that I fryed my Ecm?
Senior Member
Joined: Apr 2016
Posts: 517
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From: Perth Western Australia
Car: 1987 Z28 Camaro
Engine: 305 LG4 4bbl
Transmission: TH700R4
Re: Car runs rough after valve cover swap. I think I killed my ecm
sounds more like youve disturbed something vacuum related in/around the covers.
Joined: Mar 2017
Posts: 4,255
Likes: 427
From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Car runs rough after valve cover swap. I think I killed my ecm
No. It wouldn't run if you fried your ECM.
You may have dislodged some spark plug wires or vacuum lines. Start with the basics.
GD
You may have dislodged some spark plug wires or vacuum lines. Start with the basics.
GD
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