2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Car hesitattes and bucks, let me pick your brain!

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Old May 23, 2006 | 12:16 PM
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Car hesitattes and bucks, let me pick your brain!

in the mid power band then it bucks at me right before redline.

BUT the catch is, it only does it when the headlights are on...

I'm thinking maybe the relay to the lights is goofed but anyone got any ideas?
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Old May 23, 2006 | 06:46 PM
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anyone by chance have a FSM that can locate the page for the headlight relay(s)? I wanna check the ground points on it, but I don't know where they are.
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Old May 23, 2006 | 07:07 PM
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Check the FAQ, it has a couple of sites that have the FSM listed.

If that doesn't help, feel free to blame it on solar flares.

Last edited by Boostmaniac; May 23, 2006 at 07:13 PM.
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Old May 23, 2006 | 08:15 PM
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Originally Posted by Boostmaniac
Check the FAQ, it has a couple of sites that have the FSM listed.

If that doesn't help, feel free to blame it on solar flares.
lol solar flares, might as well blame it on the reverse vampires.
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Old May 23, 2006 | 08:53 PM
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From: byram, ms
like they said check relays if that doesn't work.
check your voltage and amperage output from the alternator. as well as your battery . check for improper grounds. and that should put you right if not. then check and see if your leading and trailing coils are good. sometimes at higher rpm's with a voltage drain from extra accessories my car use to do the same thing and it was the L2 portion of the coil.
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Old May 23, 2006 | 09:22 PM
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i wonder if your alt belt is slipping under high rpm which is causing a voltage drop which then makes a grounding issue for just a sec
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Old May 23, 2006 | 09:25 PM
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From: byram, ms
Originally Posted by Tournapart
i wonder if your alt belt is slipping under high rpm which is causing a voltage drop which then makes a grounding issue for just a sec
not a bad idea if he removed the smog pump left the single alternator belt on and had belt slippage across the water pump and alernator pulleys then he would have an easily identified problem
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Old May 24, 2006 | 01:55 AM
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Originally Posted by royaltrex7
like they said check relays if that doesn't work.
check your voltage and amperage output from the alternator. as well as your battery . check for improper grounds. and that should put you right if not. then check and see if your leading and trailing coils are good. sometimes at higher rpm's with a voltage drain from extra accessories my car use to do the same thing and it was the L2 portion of the coil.
I already made a full circle kit that went around everywhere and that fixed the 3800, but i only drove it during the day for like 2 weeks and it was day so i didnt use my lights, but the latest week i have been using my lights and thats when i noticed the problem. so yesterday i turned my lights on in the day time and the problem came back, then punched it again with the lights off and the car was fine.

and no I still have my stock air pump
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Old May 24, 2006 | 07:58 PM
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From: byram, ms
did you check the leading coil like i stated mine did the same problem and it was just going out not gone
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Old May 24, 2006 | 11:54 PM
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Originally Posted by royaltrex7
did you check the leading coil like i stated mine did the same problem and it was just going out not gone

well its an intermitten issue, if it was the coil id figure it do it all the time.
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Old May 26, 2006 | 08:00 PM
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From: byram, ms
i thought the same thing but it just wasn't putting out a high enough voltage to get proper spark on mine when there was an electrical load. (mazda tribute has the same problem and its a new car) go figure huh?
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