1989 chevy s-10 6 cyl. 4.3 starts fine but when i

Have to remove the front timing cover
& replace the gears & chain set on a V6

On a 4 cyl you may only have to do the chain &
tensioners

Need a manual for torque specs & anything you
don't understand

have it put on a scanner its most likely your idle speed sensor

do this...

make sure the reservoir is full
engine off and pump the clutch pedal slowly about 5-10 times
while holding the pedal down have assistant open the bleeder on the master located in the trans

if you get a good squirt then your concern is the master
if no squirt then replace the slave

neither job is quick but the slave is 1/2 time

Very possible you have a internal fault in the drive gear only.I would suggest that you remove it and have it rebuilt.We have a local company that rebuilds them for around 300 dollars.

you will probably find damage in the differential. remove cover and inspect.on one of the bolts there should be a metal tag with numbers on it .dont lose. you will need to order gear set.

ok, while stopped put car in neutral, shift transfer case lever to 4high or 4 low whichever you prefer, and voila put it back in drive and your now in 4x4

could possibly be camshaft position sensor or crank shaft sensor have you had a diagnostic scan

well i would check your universal joint's put the parking brake on and block the wheels put the car in n and reach under truck and see if there is play in universal if so need replacement if you have two peace drive shaft check your center support bearing good luck if these check good it could be in transmission good luck redoil

I think the firstr thing you should do is check for loose ground wires, and wires that are being pinched. Check your battery cables for tightness on both ends. It seems like something is shorting out when your engine tips when you put it in gear. Check all the wires that are anywhere near the transmission. Good luck.

Firing order is 1-6-5-4-3-2 cyls. # 1-3-5 on drivers side front to back and cyls. # 2-4-6 passenger side front to back.