'93 s-10 blazer "w" code

'93 S-10 blazer 4.3 vortec "W" code. 134,000 miles

I started it this morning, got out to scrape my windows and it died. Now it turns over but will not start. Battery is good. I don't think it could be the starter or alternator.

Within the last 2 months I've had the following work done on it:
New fuel pump, fuel filter, fuel screen, CPI fuel injector assembly, upper intake gasket, fuel lines, PCV, new spark plugs, PCM and ignition module. All these parts were put in brand new and cost me a total of $1600 parts and labor. Lately I've also been getting crappy gas mileage...like 11-12 mpg in town. Also bought a K&N air filter. Also had the distributor cap and rotors cleaned.

Anybody have any ideas before I lose my mind and push this f#cking chevy off a cliff? I'm ready to buy a Ford or a Dodge!

did you happen to get a new fuel pressure regulator? Do you hear the fuel pump turn on for a couple seconds when you turn the key on?

No I didn't get a new fuel pressure regulator. I tried to listen for the fuel pump turning on but I was by myself and I couldn't hear anything over all the other noise. I'll check that tonight. It's an AC Delco fuel pump with less than 1k miles so that better not be the problem.

I had somebody suggest checking the fuel pressure regulator once before. I don't know anything about it. Where is it and how do you test it? Any idea how much it costs and is it easy to replace yourself?

You'll have to do a fuel pressure test. I'm not sure what the pressure would be on this for sure, but since its a CPI I would imagine it should be 60-66psi and should hold when the pump shuts off. Online chiltons manual at autozone.com says 55-61 psi. The fuel pressure regulator is mounted to the cpi injector metering body.

'93 S-10 blazer 4.3 vortec "W" code. 134,000 miles

I started it this morning, got out to scrape my windows and it died. Now it turns over but will not start. Battery is good. I don't think it could be the starter or alternator.

Within the last 2 months I've had the following work done on it:
New fuel pump, fuel filter, fuel screen, CPI fuel injector assembly, upper intake gasket, fuel lines, PCV, new spark plugs, PCM and ignition module. All these parts were put in brand new and cost me a total of $1600 parts and labor. Lately I've also been getting crappy gas mileage...like 11-12 mpg in town. Also bought a K&N air filter. Also had the distributor cap and rotors cleaned.

Anybody have any ideas before I lose my mind and push this f#cking chevy off a cliff? I'm ready to buy a Ford or a Dodge!


I would check for fuel pressure and spark.
If it turns out to be a bad fuel pump, there is a warranty on the part.

It's in the shop right now but I haven't talked to the mechanic yet. I think it's fuel pump related. I turn the key over and cannot hear the fuel pump in the gas tank. Could be bad wiring or something. I changed the fuse for the fuel pump. No good...It shouldn't be the actual pump. Thanks for the tips though.



Actually I just got it out of the shop. The damn thing started for the mechanic before he even did any work on it. Only thing now is there's a grayish smoke coming from the tailpipe. It's never done this before. Is this oil?

I had the same problem after replacing fuel pump, it was the fuel pump relay. Located under the hood on the driver side firewall. There are two sensors their, about 1 inch square and 2 inches long. The fuel pump relay is the one nearest the fender. Try that first, about $10.00.