98 tahoe driving me crazy.

[fatwagon5150]

Did a complete tune up a few weeks ago,an now the engine is shaking like its missing.The tach dont budge tho. now my volt gauge is only charging steady at 9 or 10.Every time i fix 1 problem,a week later its something else.an when i start it it hesitates almost like the timings off.Any suggestions would be appreciated.

 

[Phone Man]

It may sound stupid but check your firing order, make sure the boots are fully on the plugs and clean the battery terminals

 

[fatwagon5150]

thanks for replying,checked the firing order its all right.No engine lights are on.Its got me stummped.

 

[JenneK]

You might try removing the serpentine belt and running the engine briefly to see if anything changes. If not, you can rule out all the hang-off (alt, PS pump, WP, tensioner etc.) stuff.

 

[Phone Man]

This was right after the tune up or weeks later? Maybe just bad gas?

 

[Donnie Yukonie]

recheck your gap on your plugs , ensure all vacum lines are properly installed

 

[chevyboy831]

You might try removing the serpentine belt and running the engine briefly to see if anything changes. If not, you can rule out all the hang-off (alt, PS pump, WP, tensioner etc.) stuff.

Agreed, if your charging at !0v and u got hesitation, might be an accessory issue. is there any irregular noises coming from the engine bay?

 

[gpracer1]

9-10 volts is barely enough for the truck to run!
You need to check the alt and battery or possibly ignition switch.

 

[fatwagon5150]

Thanks for all the replies,Gonna get the alt,an battery checked tomorrow.I do notice my belt tensioner is making noise.Just replaced all 4 shocks an next is front wheel bearings.Hopefully nothing else goes wrong.

 

[fatwagon5150]

Thanks for all the advice guys.I figured it out,starter took a shit so i changed it an found a ground wire frayed an about to fall apart.Changed the strap and a starter and solved the problem.