my 94 chevy s10 blazer stalls and shuts off won't stay running fuel pressure is good also jsut gave it a tune-up.... Whats the problem ne ideas??:eek7: :eek7:

Have you went to Auto Zone or Advanced and gotten a free scan. If you have do you have any codes. What size engine do you have?
Use a can of carb. cleaner and spray along side the intake and check for vacuum leaks. If you hit a leak the engine will smooth out. Check for loose ground wires.

Do you have a service light on? Take alook at your ERG valve. Inspect for carbon chunks. Ensure that the that pindle moves freely. Go back to basics. Did this trouble accure right after your tune-up? Check to make sure that all your wires are good and not arcing. Check to see if all plug are good. Check distributor Cap for hair line cracks.

the engine is a 4.3 ait a standard trans, and it stalled and shut off before the tune up and now its worse

Double check that you didn't mix up the plug wires if you installed new ones.
Look at night a cracked cap as previously mentioned will be visible at night.

the engine is a 4.3 ait a standard trans, and it stalled and shut off before the tune up and now its worse
Do you have any codes. Have you checked aboved mentioned items? Let us know what you have covered and we can take it from there.

Do you have any codes. Have you checked aboved mentioned items? Let us know what you have covered and we can take it from there. there was a hose off but still are not sure if the problem is solved because the motor mount broke on the driverside and we are having trouble getting the bolt out because we can not get to the nut very easily

OK, Let us know once you've completed the motor mount how she's running. You mentioned that a hose was off. Do you know which one was it? Let us know. Good Luck.

ok..sorry it took so long to get back but, i got the motor mount on and got the vaccum lines on but now it like spoutters seems like its not getting the correct amount of spark at the right time and dose ne 1 kno the firing order on the 4.3 vortec engine bc i hav 2 books and there giving me different things, ty

94 4.3 v6
Firing order is clockwise 165432
Odd on drivers side even on right side.
Is this a flat top dist cap or old style cap?

OK..ty, the firing order is fine but kno i jsut checked the spark plugs and there darks blk like there not getting ne fuel but the injectors r fine and the fuel pressure is goodne ideas?

What is the fuel presure reading?
Did you leave the gauge on it and watch fuel pressure at time of shut off?
Dark black may be to rich.
Will it run with a shot of carb cleaner?
Check for lose of spark and fuel pressure at tie of shut off.
Also watch and check for injector pulse.
Old syyle or new style flat top dist?
Does it quit on the road or just sitting still?
MT

ok ty for the info, now i got it started by messing wit the timing but now when its going about 50-60mph or so it dosent want to pick up speed

What is the fuel presure reading?
Did you leave the gauge on it and watch fuel pressure at time of shut off?
Dark black may be to rich.
Will it run with a shot of carb cleaner?
Check for lose of spark and fuel pressure at tie of shut off.
Also watch and check for injector pulse.
Old syyle or new style flat top dist?
Does it quit on the road or just sitting still?
MT
it does start with a shot of carb cleaner then it shut off my mom drove the truck to work and now it doesnt want to pick up speed when you give it gas and now whn she got home and tried starting it this afternoon it wont start it just cranks its and okd style dist cap and the fuel pressure is fine when it just shuts off.we found 2 hoses under the plentum the hose on the drivers side has a pin hole in it could this be some of the problem and do you think that the fuel pump has something to do with it.i also hooked the computer up to it and i am getting a code 42 and 83

What is fuel pressure reading?
Code 42 is ign module or pcm problem.
You need to go threw the repair flow chart for code 42.

What is fuel pressure reading?
Code 42 is ign module or pcm problem.
You need to go threw the repair flow chart for code 42.
Got the blazer running now when it is driven for a while it stalls out and shuts off fuel preesure is 55 psi even when it shuts off after it sits for awhile then iit starts again and you can drive it someone told me that the catalytic converter would cause this we replace the ignition module and the coil new plugs and wires rotor and cap new injector wires the timing was off and now it is ok but now it just stalls for no reason when it is driven for awhile do you really think the converter is clogged there are no codes except for code 42 the tccm for the transmision it is really mind boggling and money is getting short

ok ty for the info, now i got it started by messing wit the timing but now when its going about 50-60mph or so it dosent want to pick up
speed
old style cap

94 4.3 v6
Firing order is clockwise 165432
Odd on drivers side even on right side.
Is this a flat top dist cap or old style cap?
this is the ld style cap

Adjust and set the timing.
Clear code and if code 42 comes back go threw the repair flow chart for the code.
Has the ign module been replaced?
Does it lose spark when it quits?

MT

I was thinking fuel pump, hope you get your answer.

I noticed you replaced the module. I did a job for a friend and he brought me three bad ones in a row. I told him to buy a quality unit even though I had a tester it still took time. I used a hair dryer and heated them up as they work fine until warm.
My Napa rep said they cut open a bunch of modules and the cheap ones had 1/2 the electrical items.
Auto Zone and Advanced will check them free.

What is fuel pressure reading?
Code 42 is ign module or pcm problem.
You need to go threw the repair flow chart for code 42.
the fuel pressure reading is 55 the code we are getting is code 83 for the tcc but the blazer just shuts off and the fuel pressure is there the timing is on replaced the ign. module and the coil cant find anythin else we tries the ecm and it is fine and other suggestions

I noticed you replaced the module. I did a job for a friend and he brought me three bad ones in a row. I told him to buy a quality unit even though I had a tester it still took time. I used a hair dryer and heated them up as they work fine until warm.
My Napa rep said they cut open a bunch of modules and the cheap ones had 1/2 the electrical items.
Auto Zone and Advanced will check them free.
hceck the module and its fine just getting frustrated because cant get it running

I was thinking fuel pump, hope you get your answer.
we still have fuel pressure when it stalls do u really think the fuel pump is bad when we still have pressure

Adjust and set the timing.
Clear code and if code 42 comes back go threw the repair flow chart for the code.
Has the ign module been replaced?
Does it lose spark when it quits?

MT
code 42 got fixed adjusted the timing ignition module was replaced and it still has spark when it quits any other suggestions

If you have good spark to all plugs and good fuel pressure then move on to and check for lose injector pulse.
Are spark plugs wet or dry on the end when it quits?