20 Most Recent 2001 Chevrolet Blazer - Page 6 Questions & Answers

Sounds like the anti- theft system!! You will need to have a new key programmed by a dealer.

Either you have a battery with a bad cell or you have a dead short some where in the vehicle.

No there is not a fuel shut off switch ! There is a computer energized fuel pump relay ! Here , check out this video from scanner Danner , he is a automotive technician an teacher an Rosedale Tech. GM Fuel Pump Relay Testing

No power to anything electrical or just no power to lights

1998 Blazer. hatch window lock keeps making a noise. like its trying to unlatch.i open window it stops.

Solenoid clicking would indicate solenoid faulty or low battery.....since you say battery and solenoid are good I would check voltage at the solenoid! Could be break in wire or earth bad!

With 4.3L engine, you have to remove upper intake manifold to get at it.

only on high it could be the switch on the dash has an open on high only.

Make sure the battery has a full charge. Are you missing anything besides fuel? Engine cranking visually check for spark at the spark plugs. Also, check for fuel injector pulse. If your missing everything, check for an rpm signal. With the spider fuel system, start-up fuel pressure can be critical, around 60--66 psi. At the fuel pump connector, engine cranking, gray wire is voltage, black is ground. If good voltage and ground with no fuel pump action, have to suspect the fuel pump.

A little more detail about the problem is needed to properly diagnose.

not sure without a drive to listen to the noise in this case but main suspect weither its a auto or a manual is a worn bearing on the crownwheel and bearing ,most likely to be a pinion bearing but as stated would need a drive

You would need to look up the code for your specific vehicle, but generally its a fuel mixture problem. The 170 codes are for the O2 sensor reading too lean or too rich. Sometimes the sensor is the problem, and sometimes the mixture really is out of normal range. The main result can be loss of power or excessive emissions going out the tailpipe.

Depends. Are they both using the same diff?

Fuel Pressure Regulator Removal & Installation 2.2L Engine To Remove:

1. Relieve the pressure in the fuel system.
2. Disconnect the negative battery cable.
3. Disconnect the vacuum hose from the fuel pressure regulator.
4. Remove the pressure regulator mounting screw.
5. Remove the fuel pressure regulator assembly with O-ring. Inspect filter screen for contamination. If contaminated, remove and discard.

Fuel pressure regulator removal/installation (2.2L SFI engine)

To Install:

1. Apply clean engine oil to the new pressure regulator O-ring and install the O-ring on the regulator.
2. Install the regulator on the fuel rail. Apply thread-locker to the mounting screw.
   • Tighten the screw to 106 lb in (12Nm).
3. Connect the negative battery cable.
4. Use the following procedure to pressurize the fuel system and check for leaks;
5. Turn the ignition ON for 2 seconds.
6. Turn the ignition OFF for 10 seconds.
7. Turn the ignition switch back ON to run the fuel pump again and pressurize the fuel system.
8. Check the fuel rail assembly for fuel leaks.

4.3L Engine RPO L35 To Remove:
4.3L (RPO L35) Fuel meter body assembly

1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
2. Remove or disconnect the following:
   • Upper intake manifold (See: Upper Intake Manifold)
   • Fuel pressure regulator retainer clip (M) and discard the clip
   • Regulator (N) from the housing by twisting and pulling the fuel pressure regulator (N) and using a shop towel to catch any spilled fuel
   • Regulator seal O-ring (R) and discard the O-ring seal
   • Regulator filter (Q) and discard the filter
   • Regulator seal O-ring (P) and discard the O-ring seal
   • Backup ring (O) and discard the ring
3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system

To Install:
4.3L (RPO L35) Fuel meter body assembly

1. Lubricate the NEW O-ring seals with clean engine oil
2. Assemble the following new parts to the fuel pressure regulator:
   • Backup ring (O)
   • Regulator seal O-ring (P)
   • Regulator filter (Q)
   • Regulator seal O-ring (R)
3. Install or connect the following:
   • Fuel pressure regulator with the vacuum tube pointing down
   • Fuel pressure regulator retainer clip (M)
   • Upper manifold
4. Test drive the vehicle to confirm the repairs

RPO LU3 To Remove:
4.3L (RPO LU3) Fuel meter body assembly

1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
2. Remove or disconnect the following:
   • Upper intake manifold
   • Fuel pressure regulator retainer clip (E)
   • Regulator (F) from the housing by twisting and pulling the fuel pressure regulator (F) while using a shop towel to catch any spilled fuel
   • Regulator seal O-ring (J) and discard the O-ring seal
   • Regulator filter (I) and discard the filter
   • Regulator seal O-ring (H) and discard the seal
   • Backup ring (G) and discard the backup ring
3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system

To Install:
4.3L (RPO LU3) Fuel meter body assembly

1. Lubricate the NEW O-ring seals with clean engine oil.
2. Assemble the following new parts to the fuel pressure regulator:
   • Backup ring (G)
   • Regulator seal O-ring (H)
   • Regulator filter (I)
   • Regulator seal O-ring (J)
3. Install or connect the following:
   • Fuel pressure regulator (F) with the vacuum tube pointing down
   • Fuel pressure regulator retainer clip (E)
   • Upper intake manifold
4. Test drive the vehicle to confirm the repairs

gumtree.com

Do you the 4.3 l vortec with Central SFI fuel injection system ? On these the fuel pressure regulator is under the top part of the intake manifold , They like to leak ! Leaking Fuel Pressure Regulator

Have the rear universal joints checked for seizing

The transfer case has 2 plugs in it ,one above the other. Remove the upper plug and dip your baby finger in the hole. If it touches fluid, the level is ok

SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.