Engine wants to die

1992 S10 Blazer engine is dying when I press gas. Any suggestions where to start?

Have you checked your fuel filter/fuel pressure...be where I would start

I replaced the fuel filter about 10000 miles ago. Currently the truck has 110,000 on it. How would I check the fuel pressure?

you would need a pressure tester and you should have a Schrader valve on your fuel line near the engine, (Looks like a valve for your tires) the gauge connects there, I'm not near my garage right now to get you the pressure it should read but if you do some surfing on this sight you should be able to find the correct pressure for your vehicle. You only need to turn your key on till you hear your fuel pump run (it will only run for about 2 sec.) Dont start it check the pressure then.

does it idle fine?

It stalls after starting and running for 2-3 seconds. Here is the repair history: The Truck has 112,000 mi. At 87,000 I had the EGR replaced, 105,000 had the spider injectors replaced. 105,000 mi was also the last tune-up Plugs, wires, cap and button and replacing the fuel filter. Could the EGR valve be clogged again? I never replaced the fuel pump but I hear it working when I turn the key.

Just because you hear the pump doen't always mean it is producing sufficient pressure. have you scanned it for any codes...

Who posted this thread? Sounds like two different people - blazerBR and shadowblazer, both with identical mileage and problem?

Same person – I guess I registered twice.

So I had the EGR valve cleaned again, replaced the map sensor. The fuel pressure was checked at 50 psi. Engine scan codes were 33 and 45. I can start it after about 5 minutes of constant pumping and then it seems fine. Starts fine after it is warm. Could someone explain the injection system. I had the spider injection replaced. Are there individual injectors that would not have been replaced? If so could one injector be leaking or stuck? I read about the nut kit. Could this be the problem?

Try replacing the oil pressure switch.

Try replacing the oil pressure switch.
Any explanation on why it might be the oil pressure switch? Where is it located?

Whoa, you might want to recheck the CPI injector and the nut kit to see if they are not leaking again.

This definitely sounds like what is causing this.

Is it hard to start sometimes?

Whoa, you might want to recheck the CPI injector and the nut kit to see if they are not leaking again.

This definitely sounds like what is causing this.

Is it hard to start sometimes?
Yes, on cold starts. It does start after engine is warm.

Yes, on cold starts. It does start after engine is warm.

You original post says that it is dying when you press the accelerator pedal. Do you mean hesitation? Also, in another post, you said it is hard to start cold. When it does start, does it idle ok or does it hunt?

Have you checked the IAC?

Do you have a Haynes or Chilton's manual? If you do, find out what the cold resistance of ETC sensor is and check it. It is located near the thermostat.

Yes, on cold starts. It does start after engine is warm.

You might want to take a look at the injector again.

Check the drivers and passengers side for washing which is the tell tale sign of leaking.

Hard starts usually mean the fuel pressure regulator was leaking.

Here is a thread where the regulator is leaking and washing the inside of the plenum.

http://www.automotiveforums.com/vbulletin/showthread.php?t=309161&highlight=cpi+injector

IF YOU GET A CHANCE GO TO WWW.ALLDATA.COM. FOR 15.00 A YEAR YOU CAN HAVE AN ONLINE TECH MANUAL JUST FOR YOUR VEHICLE. IT'S WORTH THE MONEY. WILL HELP YOU ALOT

You original post says that it is dying when you press the accelerator pedal. Do you mean hesitation? Also, in another post, you said it is hard to start cold. When it does start, does it idle ok or does it hunt?

Have you checked the IAC?

Do you have a Haynes or Chilton's manual? If you do, find out what the cold resistance of ETC sensor is and check it. It is located near the thermostat.


Please send resistance #s for meter