1994 4.3l s10 blazer maf???????????

[tmay11]

does the 1994 have a maf sensor, if so where is it? it is not on my intake. I have already replaced egr, o2, fuel canister, wires, plugs, fuel filter, cap, rotor, and the thing still runs like junk. any help or suggestions would be greatly apreciated. the engine code is W. i have checked for codes and it comes up as the ecu, but not sure if it would read that way if there is a fault with the maf, if there is one, the ecu is a cool $300.00, so i'm hesitant to replace it. close to pushing this thing off of a cliff, please help!!!!!!

[Mikado14]

I have not seen a MAF on a '94.
What codes did you get when you scanned it?

What codes did you have that inspired you to change all those components?

A little more description before you do any pushing, OK?

[BlazerLT]

Will the truck die at idle?

Does it idle rough?

Does it smell like gas in the engine bay when accelerating?

Do a search on EGR valve and CPI injector checking in this forum.

[tmay11]

Originally Posted by BlazerLT

Will the truck die at idle?

Does it idle rough?

Does it smell like gas in the engine bay when accelerating?

Do a search on EGR valve and CPI injector checking in this forum.

yes it idles rough, it runs rough all the time, no power during accelleration, all ways smelling fuel, when i hit the gas i get alot of black smoke, so i know i'm dumping to much fuel, i just cant figure out why

[BlazerLT]

Your CPI injector and nut kit (fuel lines are shot).

Also check your EGR for carbon blocking it open and reinstall with a new gasket after you have scrubbed and rinsed it with TB cleaner.

Here is what you do for the injectors:

If you can smell gas, you have a leak.

Also, is your fuel smelling like gas and is thin? Is the oil level high?

Here is a link where you can see where the gas has washed the inside.

http://www.asashop.org/autoinc/feb2000/techtotech.htm

Here is mine when I swapped mine out. See the passenger side where the fuel has washed it gold.

http://www.s10forum.com/forum/showt...cpi+replacement

Get a new upper plenum gasket when you do this. You might want to have a new injector and fuel line kit (called a nut kit) so you can swap it out.

Buy the CPI injector off of ebay and the nut kit from your local dealer.

Also, get this fixed ASAP or it will kill your cat and blow your engine if the fuel thins your oil too much and you blow your lower end.

[tmay11]

Originally Posted by BlazerLT

Your CPI injector and nut kit (fuel lines are shot).

Also check your EGR for carbon blocking it open and reinstall with a new gasket after you have scrubbed and rinsed it with TB cleaner.

Here is what you do for the injectors:

If you can smell gas, you have a leak.

Also, is your fuel smelling like gas and is thin? Is the oil level high?

Here is a link where you can see where the gas has washed the inside.

http://www.asashop.org/autoinc/feb2000/techtotech.htm

Here is mine when I swapped mine out. See the passenger side where the fuel has washed it gold.

http://www.s10forum.com/forum/showt...cpi+replacement


Get a new upper plenum gasket when you do this. You might want to have a new injector and fuel line kit (called a nut kit) so you can swap it out.

Buy the CPI injector off of ebay and the nut kit from your local dealer.

Also, get this fixed ASAP or it will kill your cat and blow your engine if the fuel thins your oil too much and you blow your lower end.

**************************************************
Do i need to buy the injector too, or just the lines, how much did this project cost you, i really appreciate all of your help, until now i would have never thought somthing like that could have already gone bad, thanks alot

[BlazerLT]

You will have to check to see what is leaking first.

Safest thing to do is replace both.

Do a search on this forum or the blazer forum for CPI injector.