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Old 01-09-2019, 10:25 AM   #1
Boca
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Default Oh where Oh where are the grounding locations ??

i bought a coupe3 with 96K miles....ran good for a week then engine would "shut off" while accelerating. thought it was fuel so replaced fuel filter....then replaced plugs....crankshaft sensor (relearned with Tech 2) then replaced ICM and coil pack with OEM....ran good for another week then engine quit on acceleration. Someone suggested checking all the grounds....OK i will but, where can I find a listing of the ground locations? it seems to make sense that my problem is electrical....there are NO codes current or stored after we replaced the crankshaft sensor. even after I had it towed the other day....NO codes.
maybe something is loose or corroded??
could something in here be the problem??
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Old 01-09-2019, 12:35 PM   #2
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Default Re: Oh where Oh where are the grounding locations ??

forgot to mention its a 2004

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Old 01-10-2019, 09:57 AM   #3
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Default Re: Oh where Oh where are the grounding locations ??

There are several ground connections with electrical and electronics everywhere. Start with main power and two grounds; both battery cables from trunk. Since battery positive is extended from trunk to starter and engine fuse box, examine the entire cable run for damage including connection to fuse box. Battery negative connects to chassis then another ground connecting chassis to engine block. Three major wires to distribute battery power. The other grounds are in various places, recognized as splice packs, groups of black wires terminated together into a plug with a ring terminal bolted to chassis studs. One might be by the rear speakers, others by interior fuse box or console and one more by the engine computer.

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Old 01-10-2019, 06:12 PM   #4
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Default Re: Oh where Oh where are the grounding locations ??

Dirty throttle body or bad throttle position sensor?

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