Question about 2004 Chevrolet TrailBlazer

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Will not allow fuel in fuel tank,keeps tripping gas pump off. Starting engine in morning transmission doesn't shift correctly or may be starving for fuel.

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  • Chevrolet Master
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There may be an obstruction in the filler neck, there is known problem with the filler neck on these vehicles, I believe there is a Service Bulletin for the fix.
Your second problem description does not have enough information.

Posted on Sep 25, 2010

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In the morning the truck wont start unless you prime it with starting fluid, after that it starts all day until the next morning why?


Inside the fuel pump is a check valve to keep static fuel pressure in the fuel lines . When they go bad they allow the fuel to drain back into the tank . This can cause the problem your having. An it would also depend on the make ,model an year vehicle you have . The GM vortec engine with CPI fuel injection system ,if the fuel pump is weak you can have the same problem .

Sep 29, 2015 | Cars & Trucks

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Fuel problem


try checking the eec relay and the eec relay. Does this truck have dual tanks. If it does check the selector switch. mine went bad and burned up both relays. If these are not the problem then you will need to check fuel pump. it or they are located in the tank or tanks.

Jan 27, 2014 | Ford F-150 Cars & Trucks

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87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig


Sounds like the fuel pump is going bad(or in this case,has gone bad). I suggest that you change the fuel pump and use a fuel cleaner in your gas tank as dirty gas may have caused the problem to begin with.

Nov 27, 2012 | Chevrolet Cars & Trucks

1 Answer

I have a 96 pontiac grand am that doesnt start all the time


Starting Problem # 1: Engine Won't Crank At All

Scenario: You turn the key, but nothing happens: And by nothing, we mean there is no dash light, no sound, nada. The first thing you should do in this case is to pop the hood and check the battery. Either the battery is completely dead or there's a wiring problem in the starting system. Try jump-starting the battery. If that doesn't work, you'll probably have to call for assistance.

Scenario: When you turn the key, you hear a rapid clicking sound, and the dash lights dim. This is your classic low-battery symptom. Jump-starting the battery should get the engine to start.However, if you keep experiencing this problem, you could have a bad battery or alternator, or it could be some­thing as simple as a loose alternator belt. Take your car to a mechanic just as soon as you can.

Scenario: When you turn the key, the lights on the dash come on, but you don't hear anything. Make sure you have the shift selector all the way in park. Move it out of park and then back, or try starting it with the shifter in neutral. If your car has a manual transmission, make sure you have the clutch pressed all the way to the floor. If that doesn't help, you can try jump-starting the battery, but it probably won't work. There's a good chance your car has a bad starter or a problem in the starting circuit. That could mean a prob­lem in the ignition switch, neutral safety switch or starter sole­noid.

Scenario: The dash lights come on when you turn the key, and then go right out, and the engine doesn't crank when you turn the key to start, But, the lights slowly come back on when you release the key. This is another classic: the bad battery connection. When you turn the key to start, the starter pulls so much current that it breaks the connection. Then, when you release the key, the connection slowly comes back. The connection provides enough power to turn the dash lights on, but not enough to crank the starter. Cleaning and tightening the battery terminals may fix this prob­lem.

Scenario: When you turn the key, you hear a single, hard clunk. Turn the headlights on and try again. Do the lights dim slightly when you turn the key? If so, you probably have a bad starter or a seized engine. If the headlights don't dim at all, or just barely dim, there may be a connection problem between the starter solenoid and the starter itself.

Scenario: When you turn the key, you hear a loud, scraping or grinding sound like metal on metal. The starter drive is bad, or the ring gear on the flywheel damaged, or both. You may get the starter to engage if you try turning the key a couple of times, but let go of the key right away if you hear the noise again. If the car does start, you should drive it right over to local repair shop and have the problem fixed.

Starting Problem #2: Engine Cranks but It Won't Start

Scenario: The engine seems to crank normally, but the engine doesn't even sound as if it's trying to start. Is there gas in the tank? Gas gauges are notoriously inaccurate. If you have to move your head to one side to get the needle to move off empty, try adding some gas to the tank.

Scenario: When you first turn the key on, you don't hear the fuel pump run. In cars with electronic fuel injection, you should hear a light hum a few seconds from around the fuel tank. That's the electric fuel pump running. If you don't hear the fuel pump run for a couple seconds when you first turn the key on, try cranking the engine until the oil light goes out. That may start the pump running and allow the engine to start.

Scenario: The engine cranks normally, and it sounds like it wants to start, but it won't. You may have flooded the engine. Hold the gas floor and try again. (Let the gas pedal up when it finally starts). If it's raining out, the ignition system may be wet.

Scenario: The engine cranks unevenly in a repetitive-sounding pattern. You may have a bad timing chain or timing belt. Call a tow truck and have it towed to the repair shop.


Starting Problem # 3: Engine Starts but It Shuts Off

Scenario: The engine starts right up, but shuts off as soon as you release the key. This is the classic symptom of a bad ignition switch. A new switch should fix it.

Scenario: The engine starts and runs, but when you put the transmission in gear, the car lurches and the engine shuts off. The converter clutch in the transmission torque converter probably is engaging when it shouldn't. On some cars, you can bypass this by disconnecting the torque converter clutch solenoid; but unless you know which wire to pull, forget about it. Call for assistance.

Scenario: The engine starts and runs, but seems to idle slowly and stalls when you come to a stop. This probably is a fast idle problem. When the engine is cold, it's supposed to idle a little faster than normal to keep the engine running. You may be able to drive using two feet until the engine warms up: one on the gas to hold the idle up a little and the other for the brake. However, don't keep driving it this way. Take your car to your repair shop just as soon as you

Jul 21, 2011 | 1996 Pontiac Grand Am

2 Answers

We have a 1995 jeep grand cherokee limited 4 wheel drive. how do you know when the fuel pump is going bad?


you will notice that your vehicle acts like it is starving for fuel, and sometimes , the engine will even die, and then start back up, a lot of fuel pumps can be saved by people not driving their vehicles with a 1/4 or less amount of gas in the tank, because when the the tank gets very low, the fuel pump has to work harder to pump the gas, and even overheats when trying to pump the low amount of gas to the engine therefore resulting in the fuel pump going out.

Jun 19, 2011 | 1995 Jeep Grand Cherokee

1 Answer

Car starts but when i give gas it dies on me


your engine's starving for fuel. your fuel pump may be bad. if your engine starts ok and it only idles fine,the fuel pump pressure may not be correct. the fuel pump pressure should be around 180lbs to the motor.a bad fuel pump can either quit pumping,or it may only pump just enough to start the engine,but not produce enough fuel to run it down the road.the fuel pumps located inside the gas tank under the car. most shops guage the price of removal and replacement of the fuel pump on how much fuels in the gas tank,the more fuel,the heavier the gas tank. a full gas tank can be super heavy and hard to handle under the vehicle. suggest that you call around local shops for a price of replacement fuel pump.also call local parts places such as auto zone or advance auto parts for prices of the fuel pump,that way you can guage the price of the pump against the labor the shops charge you. hope this helps and thank you for choosing fixya.com

Mar 24, 2011 | 1991 Chevrolet Lumina

2 Answers

Gas pump keeps tripping off often


you have a bad charcoal canister. Go underneath the left rear of the car, pull the big hose off the charcoal canister, and if charcoal come out of the hose, replace the canister. This is a common problem w/Hyundai and Kia.

Oct 14, 2010 | Hyundai Sonata Cars & Trucks

2 Answers

In morning dont start on the first but on the second it does 01 gmc jimmy


The most likely cause of this is that the fuel pump pressure check valve is defective and allowing the fuel to bleed back to the fuel tank, then the system must purge before the engine starts, this usually takes a couple of cranking tries. The check valve is built into the fuel pump outlet port, so the pump must be replaced to correct this. to confirm this problem have a shop run run a fuel pressure bleed down test or buy a gage and do it yourself, the test port is on the top of the engine, it looks like a large tire fill valve

Sep 03, 2010 | 2001 GMC Jimmy

1 Answer

Engine starves for fuel after running about 50 miles or so...


Has Neon do same, I ran fuel at low level, on hot day, ran engine until it started to act up & threw a fuel pressure gauge on it. Was at approx 5 psi. Cold next morning, 48-50 psi. Always hot day about 30-40 miles into work in morning, o.k. Sit in hot sun all day & would happen 3-4 times on way home. Sit and let cool, 20 minutes or so & go again for a while. Cool day, no problem. Change pump I would.

Jul 21, 2009 | 2004 Chrysler PT Cruiser

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