Fuel pressure on 2001chevy blazer 4.3 vin w - 2001 Chevrolet Blazer

It appears there is a faulty connection either on the earth or power cable connection. Make sure all connections are clean and tight, then check with a meter.

Your blazer doesn't have one,wouldn't around back then.

From the fuel system troubleshooting guide - 1993 Oldsmobile Achieva

Inspect Fuel Pump Low Fuel Pressure.
Inspect Fuel Pump Relay - Faulty Fuel Pump Relay.
Inspect Fuel Injector Pressure Regulator - Faulty Fuel Injector Pressure Regulator.
Inspect Fuel Pump Strainer - Clogged or Dirty Fuel Pump Strainer.
Inspect Engine Control Computer - Incorrect Operating Information Being Delivered and Sent From The EEC.
Inspect Fuel Tank - Fuel Tank Empty.
Inspect Fuel Line - Fuel Line leaky/kinked/loose/disconnected
Inspect Fuel Fittings/banjo bolt(s) - leaky/loose fitting(s)

For your next posting, in 1993, Oldsmobile produced the Achieva with four engine types:
Available engines

• 4 Cylinders, VIN "3" 2.3L MFI SOHC Quad
• 4 Cylinders, VIN "A" 2.3L DOHC Quad 4 HO
• 4 Cylinders, VIN "D" 2.3L MFI DOHC Quad 4
• 6 Cylinders, VIN "N" 3.3L FI OHV

To find the engine type of your 93 Achieva, compare the 8th digit of your VIN code to the entries in the above table.

You do not have a carb. That carb looking thing is a throttle body. There is a shraeder valve just aft of the throttle body, and slightly to the driver's side. Check your fuel pressure there. I am assuming a 4.3 as this is most common. pressure should be 60 to 66 psi for vin w engines,and 55 to 62 for vin x engines., Both are 4.3s, find out which by checking 8th digit in vin. If no fuel pressure, your most likely bet is a faulty fuel pump. Try giving the tank a few wacks witha rubber mallet, as sometimes this will make the pump run one more time. If this does not solve your problem, feel free to get back to me and we'll go furthur, however this will usually take care of it. Good Luck!

1994 Chevrolet S10 Blazer 4.3L, Vin W Customer Concern: DTC 45 The spark plugs are black on both banks. Right bank plugs are damp. Removed the tuning valve and looked inside the plenum. Can see a washed/clean area on the right side. Fuel pressure is good, it holds when the pump stops. Tests/Procedures: 1. Remove the upper intake plenum cover and inspect for a fuel leak at the fuel pressure regulator.

2. Inspect the fuel pressure regulator and return lines and fittings at the left side of the plenum.

3 Replace the Central Multipoint Fuel Injection (CMFI) unit. Potential Causes: Leaking Fuel Line - One or more may have a problem.
Leaking Fuel Pressure Regulator
Tech Tips: The fuel pressure regulator may only leak at a cold or hot engine, only with vacuum applied, or only without vacuum applied. The leaking at the fuel lines and fittings have as often been the result of repairs as the initial cause of the problem. Handle the lines and fittings carefully. The fuel pressure regulator is a integral part of the Central Multi-port Fuel Injection (CMFI) unit. Any failure requires entire unit replacement.

Have you checked the fuel pressure? There are two different fuel pumps for this vehicle and if you installed the wrong one, for the 4.3 VIN Z instead of the pump for the 4.3 VIN W, Which it sounds like you have a VIN W, It won't start. Also I've seen the harness go bad in the intake that runs the injector. Have you checked for injection pulse at the plug to the injector.

check to make sure they sold you the right fuel pump. they are two pumps for a 4.3 ones a vortek and one is a throtlle body. the eighth digit of the vin will tell you one is a vin w and one is a vin z. the throtlle body only puts out about 11psi of pressure and the vortek puts out about 60psi of pressure.if you put the throttle body pump in a vortek engine there is not enough fuel pressure to run it.

It's the check vale inside fuel pump module . Testing for failed fuel pump check valve

not the same.

it is not to hard to change the pump but you will need a fan clutch tool. the water pump is on the front of the motor with the fan attached to it.