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Unread 04-06-2011   #1 (permalink)
302Feen is offline 5.0L Mustang Owner

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Default Misfire on 1994 Mustang GT

Recently my Mustang has developed a misfire. What happens is once I get into the upper RPM's usually above 4K RPM, or if I'm flooring the gas pedal, and/or if I skip-shift from 2nd-4th, I notice the engine misfires.

Also, if you watch the tachometer, you can see the needle kinda bouncing while accelerating instead of a steady climb...

Now my guess would be a bad distributor, since I can see it in the tach. But I was wanting to get others' opinions...

I had something like this happen when I first bought my Mustang, but it was much more frequent and persistant. WHen I first bought my car it would misfire and buck anywhere over 2K RPM. Ended up being bad bearings in the dizzy.
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[FONT=Arial Narrow][B][SIZE=3][COLOR=red]-1994 Mustang GT "The Red Baron": [/COLOR][COLOR=black]3.[COLOR=red]73[/COLOR] gears,[/COLOR][COLOR=#ff0000]K&N filter,G[COLOR=black]T[/COLOR]4[COLOR=black]0[/COLOR] tubular intake,[/COLOR][COLOR=#ff0000][COLOR=black]BBK Full Length[/COLOR] [/COLOR][COLOR=black]Headers,[COLOR=red]modified midpipe & Flowmaster muffs[/COLOR], timing at 1[COLOR=red]2[/COLOR]*. [COLOR=red]Best time-[/COLOR] 14.74 @ 93.16[/COLOR][/SIZE][/B][/FONT]
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Unread 04-06-2011   #2 (permalink)
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Default

when i first bought my mustang it did the same thing. if i wanted a really low rpm (skip-shifting) or a high one it would just start acting crazy... almost like a rev limiter or something. when i pulled the distributor out the gear was practically non existant lol. i dont know how it was running at all. i also found the new distributor to solve my erratic idle problem...


pull the distributor and see what it looks like, its not too hard to slip it back in if it looks ok. and if it looks bad DO NOT BY ANY MEANS BY AN OEM REPLACEMENT! if you do you will be replacing it once a week. go with MSD
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Unread 04-06-2011   #3 (permalink)
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Quote:
Originally Posted by knappster94gt View Post
when i first bought my mustang it did the same thing. if i wanted a really low rpm (skip-shifting) or a high one it would just start acting crazy... almost like a rev limiter or something. when i pulled the distributor out the gear was practically non existant lol. i dont know how it was running at all. i also found the new distributor to solve my erratic idle problem...


pull the distributor and see what it looks like, its not too hard to slip it back in if it looks ok. and if it looks bad DO NOT BY ANY MEANS BY AN OEM REPLACEMENT! if you do you will be replacing it once a week. go with MSD
Yeah, thanks for the help bud.

I've replaced my dizzy before. The one that's in it now is a OEM reman. from AutoZone. It's done real well the past 4 years up until now. But I think the only reason it is broke is my fault.
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[FONT=Arial Narrow][B][SIZE=3][COLOR=red]-1994 Mustang GT "The Red Baron": [/COLOR][COLOR=black]3.[COLOR=red]73[/COLOR] gears,[/COLOR][COLOR=#ff0000]K&N filter,G[COLOR=black]T[/COLOR]4[COLOR=black]0[/COLOR] tubular intake,[/COLOR][COLOR=#ff0000][COLOR=black]BBK Full Length[/COLOR] [/COLOR][COLOR=black]Headers,[COLOR=red]modified midpipe & Flowmaster muffs[/COLOR], timing at 1[COLOR=red]2[/COLOR]*. [COLOR=red]Best time-[/COLOR] 14.74 @ 93.16[/COLOR][/SIZE][/B][/FONT]
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Unread 04-06-2011   #4 (permalink)
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Quote:
Originally Posted by 302Feen View Post
Yeah, thanks for the help bud.

I've replaced my dizzy before. The one that's in it now is a OEM reman. from AutoZone. It's done real well the past 4 years up until now. But I think the only reason it is broke is my fault.
not to sound stupid or anything but what are you refering to when you say dizzy? lol
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Unread 04-07-2011   #5 (permalink)
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Quote:
Originally Posted by 302Feen View Post
Yeah, thanks for the help bud.

I've replaced my dizzy before. The one that's in it now is a OEM reman. from AutoZone. It's done real well the past 4 years up until now. But I think the only reason it is broke is my fault.
4 years out of an $80 reman? I would say you got your money's worth...
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Unread 04-07-2011   #6 (permalink)
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Originally Posted by alleymad95GT View Post
4 years out of an $80 reman? I would say you got your money's worth...
Yup. I'm sure this dizzy (distributor) would have lasted even longer if I wouldn't have been stupid...
Here's what happened- I went racing a couple Friday's back and I was messing with my timing. Well to adjust your timing you have to pull out the spout connector. Smart me, forgot to put the spout connector back in before making a run down the track... So as soon as that tree hit green I floored it and the RPM's went all the way up to 6K+ faster than I could react. I think that is what tore up the bearings or messed something else up...

Honestly I don't see what the problem is with a new OEM replacement OR a reman. The reman's are guaranteed to work or they (A-Zone) will give you another one that does. So I have no problem saving money and going with a reman.
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[FONT=Arial Narrow][B][SIZE=3][COLOR=red]-1994 Mustang GT "The Red Baron": [/COLOR][COLOR=black]3.[COLOR=red]73[/COLOR] gears,[/COLOR][COLOR=#ff0000]K&N filter,G[COLOR=black]T[/COLOR]4[COLOR=black]0[/COLOR] tubular intake,[/COLOR][COLOR=#ff0000][COLOR=black]BBK Full Length[/COLOR] [/COLOR][COLOR=black]Headers,[COLOR=red]modified midpipe & Flowmaster muffs[/COLOR], timing at 1[COLOR=red]2[/COLOR]*. [COLOR=red]Best time-[/COLOR] 14.74 @ 93.16[/COLOR][/SIZE][/B][/FONT]
[FONT=Comic Sans MS][FONT=Arial Black][FONT=Arial Narrow][SIZE=3][COLOR=red][B]-Check profile for pics of our car collection![/B][/COLOR][/SIZE][/FONT][/FONT][/FONT]
[B][FONT=Arial Narrow][COLOR=#ff8c00][COLOR=purple][SIZE=3]- [U]AmericanMuscle ROCKS!![/U][/SIZE][/COLOR] [/COLOR][/FONT][/B]
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Unread 04-07-2011   #7 (permalink)
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Quote:
Originally Posted by 302Feen View Post
Yup. I'm sure this dizzy (distributor) would have lasted even longer if I wouldn't have been stupid...
Here's what happened- I went racing a couple Friday's back and I was messing with my timing. Well to adjust your timing you have to pull out the spout connector. Smart me, forgot to put the spout connector back in before making a run down the track... So as soon as that tree hit green I floored it and the RPM's went all the way up to 6K+ faster than I could react. I think that is what tore up the bearings or messed something else up...

Honestly I don't see what the problem is with a new OEM replacement OR a reman. The reman's are guaranteed to work or they (A-Zone) will give you another one that does. So I have no problem saving money and going with a reman.
maybe you dont get the same rebuilt ones at i do... who knows lol. i hope a new distributor fixes it for you. drop me a message or something when you get it figured out
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