I have 96 chevy blazer just replaced fuel pump two weeks ago. went outside this morning and it wont start has absoloutley no fuel pressure will start if i spray starting fluid in intake. i can hear pump kick on but is it possible to still be bad? when i replaced it i put a used one in it keep in mind
Its VERY POSSIBLE. don't replace an electrical, used part w a used part. Check all possibilities, spark, injector pulse plugs etc, before u drop the tank. Using good fuel?
In the past I have seen fuel pumps that would run on the bench but wouldn't work in the gas tank. Sometimes you can bang on the gas tank and get the pump to start working, the problem is usually bad brushes. In the past I have cut open an electric fuel pump, those little brushes were wore down to the nub.
If you have good voltage and ground at the fuel pump and no pump action, suspect the fuel pump. Fuel filter is good, I didn't look to see if inline fuel filter? Fuel lines aren't clogged? Don't disconnect any fuel lines unless your sure, no fuel pressure.
SOURCE: vehicle just keeps cranking wont start.
Make sure that your fuel presure is up to at least 60 psi if not that could be your problem. If not, make sure you are getting spark, if not could be your Crank sensor or ingniton module ECM. Usually if your Engine control module wouldn't be bad because of your fuel pump is working, but may not be putting out the proper pressure for the fuel system. Fuel Pumps are a Problem with that year..
SOURCE: 2002 chevy Blazer hard starting
replace the fuel injectors, that is the likely cause......
to test the injector, take the power clip off the top of the injector, take one wire and ground it to the body of the car, and another form the battery, to the other post on the injector, if you do not hear a pulsing sound coming from the injector it is bad, if you do, then you have a wiring problem.
SOURCE: 2000 Chevy Blazer Cranks but wont start...
What about the fuel filter????? Have you changed it out??? If you can spary something like a started fluid, that means it is a fuel problem. My last check, it has to be above 50-psi on the fuel pressure to make it run right. I had 35psi, but whould not get over 30mph or down hill maybe 45mph. Check both filter & pressure, but check pressure with a New fule filter!!!!
SOURCE: 93 Chevy Blazer S-10 4.3L F.I.
if this is the vortec engine you may want to check to confirm that the injector pot is working. The injector pot is located under the air intake manifold (top half only) & PLEASE BE SURE TO DISCONECT BATTERY FIRST. if you unbolt the top half of the intake manifold you will find the main injector pot otherwise known as the SPIDER. This part does have a history of failing and can be very costly to replace if you purchase it new. most junk yards should be able to find one for you.
SOURCE: 96 4.3L Vortec S-10 Blazer died while driving
I am tired of people getting the run around on these engines, and the "Like." This post will be repeatedly posted threw out the world wide web until It ranks number 1 in the google search list when a user googles 4.3 dies, or rough idles etc... For me, "There is absolutely No information on this when the problem occurred for me!." For example, We would not search for "the year the valve covers changed on vortecs" when we keep getting thin ones from a vortec thrown at use. As the Idiots "Humans" we are we would simply search for , "Flat valve cover gasket." In return we would get nowhere.
After we learn the problem, "After" we can then properly search google for the solution. For example the proper term would be, "What year did the vortec valve covers change in?" Walaa. Before hand we was googling for "Flat vortec gaskets."
My point, "You can not google for a solution if you have not already solved the problem."
CHEVY DIES at stop sighns, red lights,Redlights etc. If you are here reading this, Then it is because you have wound up here due to your engine stalling or not starting properly. You googled for a solution and here are some answeres. "Answeres I didn't have" when I had the problem.
These are keywords used to get you here when you googled your problem, Please Excuse them.
Chevy 4.3 vortec Die Died Stop Flud smoke Blue Black White Spark Missfire Code Error 15 43 45 14 OBD Lop Lope Loping Lopeing Surge Surging Surgeing Knock sensor senser light engine problems fault starting heat heating crank crunk run running viberation viberate stall hesitates hesitate fuel filter pump line vacuum vacume oil astro s10 sonoma chevy plug sparkplug distributor rotor button pop cold hot water intake carb EGR valve idle idler cam sputters misses leak hose. when sometimes
will not start
does not start
cant start can't start can not start will not start wont start want start problems starting idle problems.
Some 4.3's have 2 Coolent temperature sensors, Some only have 1. On the engines that contain 2 sensers, One is a Temperature Senser and the other a Temperature Switch.
The Temperature switch Is an open circuit, It closes at a high degree.
The Temperature Senser, It can Advance Timing, De-advance timing, Control your Fuel to Air ratio and much more. 9 Times out of ten if your truck is stalling, its the temperature senser.
Which one is the Senser, which is the Switch? The temperature Switch, Which is the minor of the 2, It has one "Vertical Pin in the center of Plug Housing." It is used only for Plug guidence. The smaller *** close to the center *** is the connector ***. It is where the 1 wire makes contact.
The Temperature Senser, Rather than switch has 2 side by side Vertical Parallel Male Titts. It also has 2 wires.
Some engines Do not have a Temperature Switch, The switch on these are built into a temperature senser, and a switch is not needed.
These are the "Symptoms" of a faulty temperature Senser.
Surging
Loping
Sudden shut offs at stops
Transmissing jerking, Leight or violent.
Missing
Missfiring, Since the senser Does control Timing!
Fluiding, Wrong Fuel to air Ratio, The senser controls that to.
Rings for your Vortec. If you can't find the rings you're lookinf for, Chances are " PERFECT CIRCLE " is the only Brand ring you will be able to find without paying the dealer price. Which Perfect circuit runs around 60 to 70 bucks for the hard to find rings that you thought was impossible to find.
(PVC valve can cause Smoking." And rough idle as well. But loping is mostly due to temp senser.
Vortecs have very few sensors. If any of them go out the BRAIN is "PROGRAMED" to cause a ton of trouble. They are Designed to cause you to spend your money.
Temp Senser, Code 15, Not all BAD temp sensers Shoot a code, Sometimes these Bad sensers Do go under the radar and the error anylizing doesn't work, and give code.
You can not test a Temp senser with an ohm meter, Because at different temps you get a different reading. If you suspect this type of problem make the senser number 1 on your list to replace.
The part is 12 bucks at autozone. $12.00 and you should not pay no more than 35 dollars to have it put on are you are getting ripped off very very very badly, Since that is "More than what its worth" to have it installed.
The vortecs with No temp Switch will have the senser located in the driver or passenger Head. Engines with switch sensers will have the switch on the head, and the senser by the Thermostat duck goose neck, so a hose may have to be removed along with a throttle cable and top breather.
78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
19 19 49
vin
ECU
30 Block
code
Spider leaks due to lines or regulator, where regulator is not part of the spider and can be removed, regulator can be purches on the internet threw search engines for 50 bucks. Right clean intake equals bad regulator left equals bad supplie lines.
Supplie lines and clamps can be purchease under 3 dollars, hoses made for gasoline. Ports leak into cylinders.
Some engines have abnormal cylinder locations such as 135 or 153 and 642 or 246. Accorrding to the book of the cylinder locations mines are different. This is abnormal but those engines are out there.
If you're having problems with firing, Cross 2 and 6, then 3 and 5. Doing this will reveal the right locations over time. This can leave you scratchign your head when all you're finding is 1 diagram thats not for your engine.
"The Poppet Valves DO NOT leak inside the intake." What Idiot ever started that. They leak inside the HEADS. The Regulator and Supplie lines leak inside the intake. Rarely do you need a entire "Spider."
Caution, Spider lines are Fragile and will break like glass. Do not bend them any.
How to install Supplie line hoses to the spider. Insert the washers First, Then insert the feed lines. DO NOT insert the supplie lines if they contain a washer already on them, They will not fit. You must first Push the washers Inside the spider, Then the feed lines will go into the spider, and as this happens the washers will slide up onto the lines, This is how it is done. User a lube, Gas or PB blaster Oil or whatever.
IF you run into the store, come back out and your engine fails to start, It's probably your Senser if you can't keep it running. If you manage but it stinks, its probably your spiter. You can also Hear gas leaks inside intake. Cap can be removed to see inside intake, Intake shouldn't be too clean which would indicate gas cleaning.
1,002 views
Usually answered in minutes!
×