Why does my Chevy Blazer engine bog down when I hit the gas?

Take it to a good local mechanic (not a dealer) and see if this is one problem. My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving.

What causes hesitation and surging on Blazer 4.3L?

Fix Hesitation and surging on Blazer 4.3L If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right.

Why is my Blazer 4.3L driving like a dog?

If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right. But before you start replacing really expensive components like the fuel pump, try this: Disconnect the electrical connector to the MAF sensor and take it for a drive.

What should idle speed be on Chevy Blazer?

My first test would be with a vacume gauge. If the vacume is good it should hold between 25 and 29 at idle. May be a little low cause of the rough idle, but what your looking for Is for it to drop slowly to well below specs. This checks the catalyst converter it could be clogged.

When does a 2001 Blazer start to bog down?

I have a 2001 Blazer, last week as I was climbing a hill I attempted to accelerate and heard a “pop” and my engine started to bog down. Over this last week the bogging down has got progressively worse but only happens when you attempt to accelerate.

Why does my Chevy Blazer not go over 20 mph?

Won’t go over 20 mph. Starts right up. New plugs and wires. Never really cuts off. Runs hot but not extremely. Mass air flow is usually an intermitant problem. This sounds more like a stopped up catylist converter. take the cat off and run it, see if it gets hot, most likely that will be the problem]

Can a 93 K5 Blazer 5.7 start when cold?

My 93 k5 blazer 5.7 will start and run fine when the engine is cold. After it warms up it dies. Try to start it again and it sounds like it tries to start then the starter will bog and sometimes it turns over fine but just won’t start until it cools down.

What kind of problems does a Chevy Blazer have?

I have a 1974 Blazer with a 305 in it, I just replaced spark plugs, cap, rotor, wires, fuel filter, some hoses and PCV valve. It starts up strong, runs fine for a bit – drive it around the neighborhood – then once I come to a stop it basically dies on me, sometimes it will start right back up again – sometimes it will just crank and crank.

What is the engine code on a Chevy Blazer?

Initially the code was p0171. Now that we cleared it it hasn’t come back on. Pulled O2 sensor to relieve back pressure and there was no change. Cleaned connections on battery. On scanner TPS checks good ( 0-100%).

What’s the fuel pressure on a Chevy Blazer?

My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving. Can we have pressure without flow? Initially the code was p0171. Now that we cleared it it hasn’t come back on.

How to add refrigerant to a 1999 Chevy Blazer?

How to add freon to your 1999 Chevrolet Blazer: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

Where did the 2003 Chevy Blazer come from?

No accident or damage reported to CARFAX. 1st owner purchased on 11/27/02 and owned in NJ until 07/01/09 • 2nd owner purchased on 07/01/09 and owned in NJ until 05/20/21 • 3rd owner purchased on 06/02/21 and owned in NJ until Present.

What was the worst problem with a 2003 Chevy Trailblazer?

Worst 2003 Chevrolet Trailblazer Problems #1: Transmission Failure 2003 Trailblazer Average Cost to Fix: $2,100. Average Mileage: 119,000 mi #2: Ticking Sound 2003 Trailblazer Average Cost to Fix: $400. Average Mileage: 73,000 mi #3: Engine Failure 2003 Trailblazer Average Cost to Fix: $6,300. Average Mileage: 74,000 mi

When was the last time I serviced my Chevy Blazer?

1st owner drove an estimated 0 miles/year • 2nd owner drove an estimated 18,976 miles/year • 3rd owner drove an estimated 0 miles/year • 4th owner drove an estimated 0 miles/year. Last serviced at 166,606 miles in Delphi, IN on 04/02/12 • Vehicle serviced. Mileage: 213,649 miles Body Type: SUV Color: Red Engine: 6 Cyl 4.3 L Other damage reported.

How many miles does a Chevy Blazer get?

Mileage: 112,000 miles Body Type: SUV Color: Gray Engine: 6 Cyl 4.3 L No accident or damage reported to CARFAX. Purchased on 08/23/02 and owned in WA until 06/06/21. Driven an estimated 6,330 miles/year.

Why is my Chevy S10 engine stalling and stalling?

Engine hesitates during acceleration, feels like a electrical miss. Once up to speed seems to settle down. Have replaced all ignition components and various sensors to include ignition switch. Still acting up. Never thought distributer would go bad. Hate to spend another 100.00 hoping it will work but running out of options.

Is the Distributer on my Chevy S10 bad?

Never thought distributer would go bad. Hate to spend another 100.00 hoping it will work but running out of options. Starts without any issue but when accelerating the engine seems to be muffled and will only give full power to accelerator when I reach speeds of 50 MPH.

What kind of engine does a Chevy Blazer have?

1996 Chevy Blazer. 6 cylinder engine. While driving on the highway my Chevrolet Blazers engine just shut off. I pull over, wait a minute, then start the engine and continue down the highway again. A minute later the engine shuts off again. This happens 7 or 8 times.

Is the body of my Chevy S10 plastic?

Body is plastic. It began about 4 months ago. I could feel an odd vibration in the gas pedal that accompanied a rather odd vibration/buzzing noise when accelerating. Truck started running really rough and chugging pretty bad when leaving a stop light, but would idol and cruise at highway speeds fine.

Why does my Chevy Blazer have raw gas smell?

If the vacume is good it should hold between 25 and 29 at idle. May be a little low cause of the rough idle, but what your looking for Is for it to drop slowly to well below specs. This checks the catalyst converter it could be clogged. I’m new to forums, but I need help. Every step u said about maf and raw gas smell is true about my blazer.

Why is my Chevy Suburban bogging down on hard acceleration?

I have a 97 Suburban 5.7, 2wd. On hard acceleration it is bogging down like there is to much air, because sometimes it backfires. Or a plugged exhaust. I replaced the fuel pump-because it was bad in July.

Why does my Chevy 350 backfire when I accelerate?

If you hear a pop sound under the hood when you accelerate it is most likely running lean (Not enough fuel) from either a vacuum leak or the fuel pump failing (low fuel pressure). The 90 degree elbow in the PCV Valve hose at the base of the throttle body to the PCV valve is common to either fall off or have a hole in it.

Why does my Chevy Blazer have no power?

If not that code then your problem is most likely the cheap plastic distributor that GM installed for that year. Take off that expensive cap and see if the shaft jiggles. It is better to remove the distributor to inspect it. AutoZone sells a lifetime warranted Distributor for about $90.

Why is my car losing so much power?

If you are losing power, bad spark plugs could be a problem in some rare scenarios. Mostly you will notice worn spark plugs when your car is misfiring. If your car engine doesn’t sound like usual, there is a chance that a spark plug is worn out and the car is running on one cylinder less than usual.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

What to do when your Chevy Blazer wont start?

Aby codes (SES light on) and if so post them. No codes come up until after it happens then it comes up oxygen sensers port 1 and port 2. You can step on the gas and the engine just bogs it has absolutely no power . Put the car in neutral ( while still moving ) count to 3 and restart and have all the power you want.

What causes a GMC Jimmy 4.3 engine to die?

Gmc jimmy 4.3 will sometimes die while driving in highway when i let off the accelorater pedal. my 95 blazer when coming to a stop and braking it idles high and rough sounding and it sputters and will clink and clank as stoppung and almost dies no engine light on what could be causing this. Your engine may have a vacuum leak.

What causes engine to shut off and then start back up?

No warning lights come on and all the gauges are normal. I got the garage to scan computer and they said no codes were coming up. So the blazer starts fine and runs fine just shuts off whenever it feels like without warning. Any suggestions? Answer: This could be a problem of a failing fuel pump. This is pretty common on this truck.

What happens when an engine dies on a truck?

Alt and Battery are good. 13.8-14.5 range. No lose of power or other signs. It is like you turned the key off and re-energized it. Engine dies and 2 sec back on and normal. 4.3L S10 LS. Slow rebuild and work truck.

Can a bad fuel pressure regulator cause a misfire?

There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil. A fuel injector problem can also cause engine misfires. It is also one of the symptoms of a bad fuel pressure regulator. A problem with this device can lead to low fuel pressure.

What happens when the fuel pressure regulator is low?

The main function of the fuel pressure regulator is to control the pressure of fuel that gets delivered to the engine. If there is very low pressure, then fuel will move in a very sluggish manner. The cylinders will not receive the right amount fuel that gets mixed with air.

What to do if your fuel pump looses pressure?

To check the fuel pump, presurize the fuel system and only block off only the return line. If it holds pressure then you know the the fuel pump is ok and the problem may be with the fpr. If you loose pressure, the pump check valve is bad and you need a fuel pump. To check the fpr, pressurize the system and then block off only the feed line.

Why did my fuel pressure drop to zero?

The pressure dropped about 10 psi over the first half hour, then dropped all the way to zero within the next half hour. It has a brand new fuel filter also. I can find no visible leaks nor do I smell fuel. This leads me to beleive that either the FPR is defective or maybe I have a leaking injector.

What should the fuel pressure be on a GMC Sierra?

Drives:2004 GMC Sierra Posted October 8, 2010 When the ignition switch is ON and the fuel pump is running, the fuel pressure indicated by the fuel pressure gauge should read 379-427 kPa (55-62 ps i). The spring pressure inside the fuel pressure regulator controls the fuel pressure.

What should fuel pressure be when ignition switch is on?

When the ignition switch is ON and the fuel pump is running, the fuel pressure indicated by the fuel pressure gauge should read 379-427 kPa ( 55-62 ps i). The spring pressure inside the fuel pressure regulator controls the fuel pressure.

Why does my Chevy Blazer engine bog down when I hit the gas?