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Old 02-04-2011, 09:59 PM   #1
trog69flh
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1997 SL2
1992 SL2
Dizzy 1997 sl headache

I NEED HELP

have a 97 sl2 that started acting up. started getting a misfire cylinder #3 fault. replaced coil packs (both) icm,plugs,wires, and injectors. the crazy thing will run great for awhile then ses light comes on and starts missing. when it runs great i can pull injector plug off and engine will miss, when missing if i pull wire off no change. had a noid tester on it and when it misses i have no juice to #3 wire at all, then juice comes back and tester works again.anyone have this type of problem. thanks for your help in this matter

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Old 02-05-2011, 02:18 PM   #2
adventureoflink
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1997 SL2
Default Re: 1997 sl headache

Perhaps try cleaning/replacing the grounds to the injector and/or the main grounds (one behind the fuse box, the other on the engine underneath the EGR valve, and the negative battery connection)?

This is a weird fault.. normally when #3 misses, it's due to a clogged injector and can lead to burned valves..

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97 SL2
DOB: 3/19/97
Date Obtained: 5/30/07
Status: Alive, 1/2 exhaust

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Old 02-05-2011, 03:03 PM   #3
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1996 SW2
Default Re: 1997 sl headache

Actually, there are no (direct) grounds to the injectors. They have a common hot (pink wire to each), and the ground for each is switched, selectively (sequentially) by the PCM. But it does sound like an issue with wiring to/from that injector (pink hot, pink/black ground, per '96 FSM).

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Old 02-07-2011, 09:40 PM   #4
trog69flh
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1997 SL2
1992 SL2
Default Re: 1997 sl headache

i have pulled all the grounds off and cleaned them. replaced both negitive ground ends. when it starts to miss i can shut it off and its like something resets cause when i fire it right back up then it run normal for awhile

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