[the13thplumber]

Hi, new guy here. I searched but couldn't find an answer to my problem. I have a 92 1.9/auto and it has a miss at crusing speed (50-60). Runs fine at lower speeds and acceleration is fine. Also when I step on it at 50+ and go to 70mph and then slow down to 60 or so it runs fine for a couple of miles and then starts missing again. Actually it is more like a little stagger or bucking.
I just replaced the plugs and wires but this has me stumped. If it was a flathead there wouldn't be a problem but these newfangled computer things and I don't speak the same language. Anyway, I would appreciate some educated guesses because I don't want to throw bushels of money at it.
Thanks
Mike

 

[marclar]

spark wired dude. if you pop your hood at night witn no light you should see blue sparks shooting across the wires when you revv it up. its happened to me many times.

 

[pLx]

it could also be clogged injectors... bad coil, clogged fuel filter... or bad wires as he said

 

[DeathSlinger00]

throw some injector cleaner and some new wires and see what happens.


mine had the same issue, all i needed was just new plugs n' wires. (btw stay the hell away from bosch. they're only good on imports, just stick with motorcraft).

 

[bouv]

Hi, i have the same problem

I bought my cat last spring and had been experiencing what you explained. To now, I changed the spark plugs and the spark plugs wires and and it didn't make any difference. I read yesterday on another forum, that it might be a problem with the Mass Air Flow sensor working bad.

 

[marclar]

if it was a maf problem it would happen all the time.

 

[bouv]

So could it be the O2 sensor?

 

[DeathSlinger00]

possibly, but usually the O2 sensor going wrong includes a check engine light going off.

 

[Josh_LX]

a buddy of mine recently changed a bunch of stuff in his 95 chevy half ton because he had a miss at speed. Plugs, wires, rotor, cap, etc, etc. Turned out to be the O2 sensor.

 

[bouv]

My car's in for repair, I'll finally see what the problem was.

 

[rickthemadman]

hey when you find out what the problem was tell me. Mine is doing the same thing

 

[DeathSlinger00]

i must ask: is the a/c or heater running also?

 

[nigel]

Good point, my car bogs/semi-misses on the highway around 2500rpm only when the A/C is cranked.

 

[DeathSlinger00]

^^^ same here. that's what made me ask.

my mom's '94 wagon does it, and my '95 does too.

 

[JohnnyBee]

clogged fuel filter, bad o2 sensor