Codes cleared, still bucking, what the ****?

[Corey]

Well I cleared the codes, and it runs a 111, for both the KOEO, and KOER, but the car still bucks, and jolts like its missing. I dont understand. There is a major power loss under 4000 rpm, but once it hits 4000, its off to the races. The car also idles fine. I dont know where to start, besides may the wires. I have another set from another engine, I plan on switching them, to see if it fixes the problem. Any suggestions.

Corey

 

[BIGSHOMIKE]

Wires, I had the exact same thing in my 92. Check the plugs too for those carbon trails or whatever they are called, might want to replace those as well.

 

[MattyMac1]

I would check your Upper air duct hose for cracks or tears. It's the hose that goes from MAF up to the Throttle Body. I had a problem with bucking too. then once get up to about 3-4k rpm it seems fine..If thats what it is you can just use Duct Tape to seal the crack until you get a new hose.It's worth a shot anyhow...later Matt

 

[MattyMac1]

P.S By the way..My hose cracked due to Engine travel because of failed motor mounts...

 

[It's SHO Time]

I had the same problem and mine was my DIS module, it had came a little unpluged so that the car would still run but not good and would buck alot. just make sure that both ends are pluged into it good.

Justin