Chevrolet - Trailblazer :: Misfiring And Hesitating When Hit The Gas
Aug 7, 2012
I changed my plugs recently in my 2004 Chevrolet TrailBlazer 4.2l I6 with the coil on plug setup, and now it is misfiring and hesitating when I hit the gas. All the spark plugs have the proper gap and torqued down properly. I tried tightening down the ignition coils and on one I snapped the bolt. Of course my truck is staying parked until I replace the part which I have to order online. The only thing I can think of as far as the misfiring is not having a proper seat with the coils, my question is, how to get a better seating or if there are any other possible issues I could have over looked at all?
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I have a 02 ex 118,000 on it, not a every day driver, mostly weekend and camper towing. The truck was running great, stopped at a light and the engine started hesitating, the od light was flashing, and then it died.. started right back up no od light, but was still hesitating/missing took it to a local shop, they hooked up a scanner and said that several coils were misfiring. My question, replace all coils? go with oem coils, or aftermakert?
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I drive a 2009 Chevy Cobalt. A really great car except for that when I drive through a puddle of water (no matter how deep) and have to stop immediately after, it hesitates and makes a squealing noise as soon as I hit the gas. My interior lights will also dim and the force my air/heat is blowing will lower. After about 5-10 seconds, however, the car will act normal. My check engine light does not come on nor any other lights indicating an issue. Thought it could possibly be a belt but not sure.
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I have a 2008 trailblazer that the ac/heater doesn't always come on. When it does come on it wont stop blowing until the battery dies.
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The air conditioning in my 2002 Chevy Trailblazer works but never gets really cold. What is the best course of action to get it working better? A do it yourself kit or an auto repair shop?
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I have a 2002 trailblazer that will start fine in the morning and after it sits for an hour or two, but once i start it and run it for over ten minutes and i shut it off when i try to re-start it, it will crank but won't start. the dealer cleaned the throttle body and injectors, check the fuel pump for presure and it was fine,and they got no error codes?????? I've read that in can be the ignition switch??
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2012 Trailblazer 4x4. Got up this morning to go to work, no reverse gear. I pushed it out & drove to work (15 miles). Got to work & reverse works fine now. Drove home & parked. An hour later I go out & again, no reverse. What's going on?
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What are symptons of a "bad" drive shaft? Just curious because during a recent trip to the dealership for an oil change a mechanic told me I had one(I had mentioned I heard a noise that seemed to speed up and slow down as I drove-kind of a whirring noise). He arrived at that diagnosis by pushing down on the hood with enough force to make the vehicle(2002 Chevy Trail Blazer w/4wd) bounce up and down - there was a clunking noise. I haven't taken it in to have it looked at more closely, mainly because I am afraid of the cost. What's involved in replacing a drive shaft? What's the cost? If it is really "bad" will it break suddenly and cause an accident?
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I have a 2005 v-6 and when I first start my car, its makes a real high pitch whining sound that will last for about 10 sec. before it starts to whine down.Then after that, its ok. It will not make any noise after that when I start it unless it sits for any length of time (6 to 8 hrs.) What might be the problem and If Its something I could fix myself?
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My 2000 Chevy Astro van started having problems whenever I accelerate, hesitating losing speed, and all I can possible tie it to is a new gas station where I filled up which said "May contain ethanol". I think the "service engine light" flashed on for a second but does not stay on.
Could bad gas or the ethanol be the problem? Would getting the problem codes read at a parts place work?
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My 1990 Chevy Silverado with 5.0 liter, 45k miles has started a problem that the guys in my diesel repair shop don't know what to do. Last week it started to run rough, hesitating and lurching and not accelerating smoothly. It idles fine, or pretty well, but just doesn't run smoothly with any kind of acceleration. I drive it back and forth to work just 1.5 miles during the week. I took it on vacation a week before, so it's not from lack of long trips, it ran fine.
A guy at my diesel repair shop put it on his Genesis scope and all it would code is the O2 sensor showed lean, but we could see it switching from rich to lean and so on. I thought vacuum leak, but couldn't find one. PCV valve is good. EGR valve is ok. I changed the fuel filter yesterday and thought it ran a little better, but now has gone back to the rough running. What I can do myself to diagnose this? I do have all the tools and shop.
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I recently bought a 2005 Chevy Trailblazer LS EXT 4.2l 6cyl with about 129k miles on it. The vehicle is excellent condition and has no leaks on the engine or transmission. I took it for a test drive before buying for about 20min and no issues with it shift or rough idling.
After having the SUV for about a week, I noticed that it has a slight rough idle at red lights and gets a little worse when the AC is on. Twice now in the past week the SUV begins to sputter at the red light and then shuts off. It doesn't do this every time and I have noticed it happens more when the fuel gauge is in between the quarter tank E line. My father in-law is having a similar issue with his 2003 Trailblazer, same engine and make and model.
I should also mention that no check engine light comes on or leave an ERR code.
Throttle body needs to be cleaned: We have done this on my father in-laws and didn't fix the issue.
Replaced the spark plugs: didn't solve the issue
Read that it could possibly be the APPS sensor under the gas pedal: Haven't replaced this yet
Tighten or replace gas cap: Have done this, didn't fix
Have the idle reprogrammed: Have not done yet.
Could possibly be a fuel pump issue.
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I have a 2002 chevy Trailblazer that when you put it into drive there is a vibration.It does not do this in park or neutral. I have checked the engine mounts and transmission mount, and they look good. The vehicle has a little over 118,000 miles on it and the engine runs and drives great except for this vibration that i do not know where it id coming from. What may be my problem?
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I’m hearing a horrible sound when I drive my 2002 Trailblazer. It has 250,000 miles and we have babied it since the first day we bought it. I’m hoping it will last another year. The sound I’m hearing happens intermittently. I took it by a mechanic, and of course it didn’t make the sound. It sounds like you are driving over rumple strips found on the shoulder of expressways. I then feel a “drag” and it goes away. What’s going on?
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I have a 2008 Chevrolet Trailblazer. I have had 4 of these vehicles and have been very pleased. This latest one has 61000 miles and occasionally has a very strange vibration at speeds above 60 mph. It only happens occasionally and most often occurs at these higher speeds and worsens with increased speed (of 70-73 mph). The vibration is so alarming, that I will press my brakes to slow down, because it feels like the vehicle is starting to lose control. The problem is that when I press the brakes, the vibration intensifies about 3-4 fold! It feel as if the wheels are going to come off. It's a very frightening feeling. I have taken it to the shop and no one seems to know what it is. The tires are fine. Brakes are fine. Interestingly enough, if I lower the speed to 50-55 mph, the vibration lessens and eventually completely goes away.
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About once or twice a month my 2000 Trailblazer dies immediately on starting. Will not start again for 10 minutes. After 10 minutes rest it always restarts. Never dies while running. Have had fuel pump replaced about five years ago. Condition has been occurring about that long though and has progressed from once each 3 or 4 months to its current rate. Can occur after setting all night or after having just run and shut down for a very short time. Natural assumption would be fuel pump but as it always restarts on second attempt after 10 minute rest is there any possibility it could be a computer malfunction that takes that long to reset?
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The battery on my 4.2 liter inline 6 2008 chevy trailblazer is draining without the key in the ignition. I have checked the alternator, fuses, and starter with no luck. What might be causing this problem?
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I've 2007 Chevrolet Trailblazer, around a month ago the front Windshield Wipers started to start on their own, when I got the car checked the technician told me that I've to replace the Windshield Wiper Motor, I wonder if this is correct? and what would make the motor to starts on its own?
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2005 Chevy Trailblazer. Whenever the temperature goes below freezing, the 4x4 selector switch does not work. After the car warms up (10 min), I need to turn it off and then restart it in order for the switch to work. I tried changing the selctor switch, that did not work. Is there some sort of solenoid or actuator that is freezing up?
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I have a 2005 chevy trailblazer that vibrates. Gets worse when air conditioner is on. I've put new tires, new front end alignment, new spark plugs, changed my harmonic balancer. My motor mounts are fine. My engine light is not on so i cannot figure it out.
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When I go to crank my car in the morning or after its been sitting for a while... It turns over but won't crank but when I turn it back and immediately crank it again it cranks right up...
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