Engine sluggish vibration at acceleration

[Bricksack]

Thanks guys. Found the reaon it was showing codes no a ground tab broke re wired it now there gone. But I have that surging still. Checked all wires and plug wires. Swapped 6 and 8 fixed but spit and sputtering and over drive gear idk if its cause its so low rpm vibrates like crazy . Plus the p1345 code is now "confirmed" on the scanner..

Sent from my SCH-I605 using Tapatalk 2

 

[Enginebuilder]

P1345 is a cam/crank position sensor mismatch. Which means that your base timing is off. Did you pull the distributor? Rotate it at all? Get a timing light and double check your timing. If the timing mark appears to 'jump' under the timing light, you may have a worn timing chain, a worn gear on the distributor, or a faulty cam position sensor. Further testing will be able to confirm.

What does a vacuum gauge show at idle?

 

[Bricksack]

It was the egr pipe I was thinking of. My mistake and had to change out the distributor. To replace. But now have the p1345 code after install . Still stumbels at acceleration

Sent from my SCH-I605 using Tapatalk 2

 

[Bricksack]

I bought new dizzy new cao new rotor new module new plugs. Installed all.

Sent from my SCH-I605 using Tapatalk 2

 

[sewlow]

I may be wrong, but I've had similar probs when the distributor gear on my '98 had worn teeth to the point that they were as sharp as knives. It had all the probs that you've described. Surging & vibrating at 2000+ rpm, Idle didn't seem right. The occasional cough when mashing the throttle. Loss of power.

 

[Enginebuilder]

New distributor comes with new distributor gear.

You are likely one tooth off on the install. Re-stab the distributor and you should be golden.

 

[96-1500]

New distributor comes with new distributor gear.

You are likely one tooth off on the install. Re-stab the distributor and you should be golden.

You will likely need a scanner to set timing on a vortec if it gets screwed up.
http://www.gmt400.com/forum/showthr...ng-and-correctly-setting-a-vortec-distributor

 

[sewlow]

New distributor comes with new distributor gear.

True. Not worth the effort of replacing the gear. By the time the teeth are that worn, the bearings are probably no better.
I dropped in a new dist.

 

[Bricksack]

I dropped in a new one also. Dealer ship said just needed to resrt the timing . Cost me 107 $ unless they have to re adjust it

Sent from my SCH-I605 using Tapatalk 2

 

[Bricksack]

Well was not the timing. Had it reset and still doing it. I just wasted 120 $. I have no clue what the problem is.

Sent from my SCH-I605 using Tapatalk 2