jerking on take off question..

[Liftedwhite94]

My buddies dads 99z71 is jerking when you stop and take off, acts fine gearing up and down, just when you drive it for a while, stop and take off, any ideals?? its got around 150,000, trucks never been driven hard or anything. has new u joints also. thanks!

[Maui4x4]

Clean the MAF yet?

[Mf2racer]

check the plugs and wires

[brobradh77]

I totally read the title of this topic wrong..lol Jerking off question..I thought hell I could help ya there..lol

[Frenchy]

I totally read the title of this topic wrong..lol Jerking off question..I thought hell I could help ya there..lol

Thank god, I'm not the only one who read it like that

[zeake]

I totally read the title of this topic wrong..lol Jerking off question..I thought hell I could help ya there..lol

Thank god, I'm not the only one who read it like that

LOL I am still laughing at how I first read it. LOL We are so Juvenile.


Ok now have you changed fuel filter and fuel pressure regulator on the fuel rail?

[timber74wolf]

And that Folks is why I did not reply when I first read the title...lol

[2500Ak]

I'm going to put my money on a lean condition. When the engine is cold the engine operates in open loop mode, runs richer and masks the condition. Start with tune up stuff, It's a 99 so it's got an inline fuel filter, I'd change it. Throw some HEET into the gas tank to rule out bad gas. Some seafoam or injector cleaner might also be worth a try. Clean the MAF and the throttle body.

If that doesn't help pull codes and check fuel pressure.

[oleshifty]

What kind of jerk? Is it like a 'clunk' mechanical thing, or a 'shake' like power related?


You mention u-joints, so i'm thinking 'clunk'. Try pulling the drive shaft and putting axle grease on shaft, then reinstalling, I've heard problems of it getting pushed into tailshaft when braking, and binding on acceleration.

[Chevy-Art]

I totally read the title of this topic wrong..lol Jerking off question..I thought hell I could help ya there..lol

Thank God, I'm not the only one who read it like that

LOL I am still laughing at how I first read it. LOL We are so Juvenile.

And that Folks is why I did not reply when I first read the title...lol

Same here, but whenever I check on new post I glance over it I still have to do a double take.