1995 Chevrolet Blazer - Answered Questions & Fixed issues

4.3L , L35(RPO engine) has 1 fuel pump relay PCM controlled has 1 fuel pump.oil pressure sensor , too. not sure at all me what a pulsator might be.Ahh Dampener. what matters is spark first, it must have spark or the PCM cuts fuel dead on all EFI car. (if the PCM detects spark bad in ANY WAY) the comes cranking the pump just receiver 12vdc cranking KEY ON ONLY is only 2sec prime puls best is forget that unless have 2 person to test prime, but cranking matters first. some new pumps are silent, (like top Bosch) so sounds prove little. today what really matters is PSI pressure cranked, the PCM brain or the oil pressure switch allow the pump to have power cranked, and running. that is how to test it, cranked only. "starting with start fluid,but now it just cranks over ,only." does this mean starting fluid now fails.? we check spark at all spark plugs no just 1. we check oil pressure to, if zero PSI cranked that is bad . last is fuel pressure if not at spec, it will not start. spec fuel pressure is 58-64 psi yes some fuel rails or near by or near tank, have pulsator that is really regulator/dampener. it prevents old cheap pumps from madly pulsing the rail and causing injectors to mess up. vane pumps do make pulses some worst tan others, (some even by pass it, but there is their call) Is this a TBI throttle body injection? or MPI. the SM states this. (it has a 2 second prime for sure) If the engine does not run, turn the ignition ON, but do not attempt to start the engine. Listen for the fuel pump to run. Within 2 seconds of turning the ignition ON pressure should be 58-64 psi (400-440 kPa) while the pump is running. Once the pump stops, pressure may vary by several pounds, then it should hold steady. If the pressure does not hold steady, wait 10 seconds and repeat this...

If your 1995 Chevrolet Blazer shows code P19DA, it means that there is a signal problem between the fuel pump and the PCM. This may have happened because you have a burned fuel pump motor, or the float meter of the fuel pump has a burnt wire. Check the fuel pump relay, if malfunctioning, inspect the ground circuit to and see if the resistance is accurate. If it appears to be damaged, remove the fuel tank, taking out the pump, and replacing it with one that works.

The fuel pump relay in my blazer is located in the rear of the glove box which means you have to clean out all of the maps and other junk to get to it. There is a plastic cover that has to be removed to expose the relay which is the right side of the two present. You can tell if it is operating when you turn the ignition key to "ON", the relay will click and you should hear a humming sound as the fuel pump energizes.

When was the last time you had the fuel filter changed? If the fuel filter is not the problem, I would have the fuel pressure tested.

Have you checked to make sure you are not inadvertently stuck in four wheel drive - low?

get the service and repair manual and get the solution with the help of diagram and you can get the manual from the given link http://toolsnyou.com/ i had tried it before and very happy saved my money anfd time

Run a smoke test for a vacuum leak that may be your problem

with the door sagging it may not be pushing button in far enough to shut light off or aligning with button right.Replace bushings in door.The fuse is probably the same one for light and door locks.

Sounds like your solenoid is going bad... easy fix..

Should hook up to junction block on the fire wall near brake booster . Should be 4 all together , these are main power supply's for the vehicle ,two power the ignition switch .This is not a direct feed to the transmission . View wiring diagram here http://www.bbbind.com/free_tsb.html Do you know what a wiring diagram is ? Enter vehicle info. year,make ,model and engine . Under system click on electrical distribution then under subsystem click on power distribution . Then click the search button ,then click the blue link . Watch this video starting at 24 min .in , shows junction block . Fuel pump electrical circuit diagnosis no fuel pressure testing GM

A grenade is a good option . You know it is a fuel problem, you will have to get into the injector system, and see what is wrong. That spider system must have given GM plenty of headaches, which could explain why they quit using it. IIRC, most of the problems had to do with the pot that held fuel and was distributed to injectors by hoses.

If your emergency flashers are working, you don't need a flash relay. The multi-function switch you're referring to isn't all that hard to do. What isn't working? What unit stopped all together?

Lack of power , clogged catalytic converter . maybe ! Before replacing parts have the exhaust back pressure tested .

The engine head gasket failed, this should not be a total engine seizure.

Junk Yard

The TPS (Throttle Position Sensor) is actually easy to replace - it is located on the throttle body on the engine and is attached to the throttle linkage and flapper valve inside the throttle body. If you have a decent code scanner, you can actually view the position of the throttle as you move the linkage to see if it is tracking linearly with no gaps. This condition can also be caused by a stuck or faulty EGR (Exhaust Gas Recirculation) valve, regardless of its age. Recheck all codes to be sure you are still getting these errors.

No, just replace it.

Go here. http://bbbind.com/free_tsb.html

It is under the dash taped to the main dash wiring harness on the passenger side, I saw a video of it.

thats a heavy emergency brake situation will be ok to nurse it home if light stays on it will need a workshop to check over that anti lock system a brake sensor may be faulty