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Unread 07-28-2011, 02:04 AM   #1
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Join Date: Jun 2011
Location: Calgary, Alberta
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ZJ Electrical issue/Engine surge?

Hey guys, I have a 1996 Jeep Grand Cherokee and recently I've been having not one, but TWO problems with the ZJ. First off, when driving at night sometimes my dash lights (and shifter area lights) dim A LOT almost as if their shorting out or something, and then sometimes over bumps they turn back on. Quite a hassle since it's hard to see my speed! haha. My Blinker lights are 100% un-effected by this though? Also my headlights and aftermarket stereo deck are un-effected? Could it just be a loose wire somewhere? Any ideas where this wire could even be connected?
And the second issue is sometimes when I turn my car on and drive for ~10 seconds? (Just a guess, its fairly quick) my power in my ZJ almost like ... surges? The power just stays constant for ~2 seconds. I can add more gas and it just .. stays at the same rpm and speed. I havent checked what speed / rpm exactly, or if it even happens for the same speed/rpm every time. Its completely intermittent so its hard to recreate (unlike my Death Wobble thats slowly comming back. EXACTLY at 80KM/H and slowing down haha) Any ideas why my ZJ might be doing this? It does NOT happen every time I start it, or doesnt happen at lights / stopping. Only randomly after I start it and move like half a blockish..?
Thanks guys. Any ideas are always appreciated.

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Unread 07-28-2011, 04:06 AM   #2
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1997 ZJ 
Join Date: Dec 2006
Location: , Pennsylvania
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1 headlight switch solder joints.
2. Probably the map sensor or tps.
'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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Unread 07-28-2011, 01:10 PM   #3
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Heh oh yeah? How hard is it to get to the joints? Would I have to take apart my entire dash to get behind the switch?
And oh? There has NOT been a CEL Or anything either. Im not sure if its even a "Surge", it just . . . stops accelerating and everything for roughly 2 seconds. then goes again. Absolutely no other problems?
But thanks for the response.
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