When going over bumps check engine light comes on and car stalls

G

gnkid1987

Member
Joined
May 18, 2004
I had this problem that is really weird when I hit a medium bump in the road my check engine light comes on and the car looses engine power then the light will go off and everything is fine I don't know I checked for loose grounds I tried moving wires around while idling and tapping the maf sensor. Any tips would be helpful thank you

Ray


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Look at the positive battery cable and see if it's hitting the header and shorting out when you hit bumps.
 
I will double check that but the car still has electrical power just stalls out loosing engine power it's weird


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Ck the ground on the block comming from the battery.

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I was gonna wait untill tomorrow but I had to run to the garage and check it now found the ground wire clean and tight on block. Found the orange wire to be but connected with a large connector saw corrosion inside and gave it a slight tug and it came apart so I hope that is my issue I'm gonna solder I in the morning but thank you all for you responses this forum is the best thank you again guys


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that orange wire is the power feed for the ECM.... You probably just found your problem (or at least one of them. LOL)
 
This could also be a symptom of the MAF going bad. With the car idling, grab a screwdriver and tap on the MAF and see if it stumbles.
 
My orange wire was rotted through where it connects to the ECM it was a water leak problem from my T Top car. Needed a new ECM and a new pin that was inside the harness. Nothing like driving 70 plus miles per hour hitting a bump and the car dying on you on the highway!!


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Lol I hear that I was doing a pull and at 80 at wot and the thing stalled lol


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Ok typical Buick fix one thing and other stuff brakes I fixed the orange wire and now the car just cranks no starting the scan master is not reading either I check the ECM fuse and it is good there any other fuses or anything else ?


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Keep in mind that orange wire coming from the battery down to that connector is a fuseable link not just a normal wire. This is why it goes bad. Ran into an issue somewhat like yours with a friends car and that's what was bad but I soldered in another fuseable link there.
 
Where is the link ? On my car there is a red wire off the terminal then it was butt connected to the orange wire ? Is the link supposed to be there ? Did I fry the ECM maybe?


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Check engine light does not come on and scan master says 2.1 o. The right hand side then flashes all 8s for a second then goes black. I can't find a bad fuse


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Fusable links are on the large starter post. They are fed by the large battery wire coming from the battery.
 
Ok I spent some time found this. Checked for power to ECM found none. I checked the new connectors installed on the orange wire under the hood and then I had power car ran moved wire car stalled.. My connection was great I replaced the connector and as I was stripping the wire . The orange wire got pulled out of the positive terminal and was all green and corroded which was my problem all along so I need a new positive battery cable. I want to thank all you guys again for helping me out top notch thank you!


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