Hummer :: H3 Turns Over But Doesn't Start


Aug 18, 2016

My '07 H3 will turn over, but not start, but it only happens about once a week (4 times total as of now). When this happens, if I let it sit and try again in about 15 minutes it will start. I've spoken to 2 mechanics who state that they need to experience it happening to diagnose it. This means I would have to leave my H3 with them for potentially a full week which I can't do. How to handle this? I'd hate to be stranded somewhere in 115 degree heat with my 6-year old.

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Golf IV / Jetta IV :: 2.8l VR6 12v Engine Turns But Doesn't Start

I have a 120k miles manual 2000 jetta vr6 12v. I was having check engine issues so i put in a reader and showed me problems at catalytic converter. I don't remember the code, and no longer have a reader...

I was told to replace the oxygen sensors in both banks as well which i did.

I opened up catalytic converter to inspect and now the car will get no spark, the engine turns, and the display shows engine stop.

I was also told to put the oxygen sensor further away with an extension cord but not sure if that plays a part.

Does the catalytic converter is causing it to not spark?

Could there be an issue with maybe a sensor at the crankshaft that checks for motion?

What the starting sequence and dependencies are or what failures I could have that prevent the spark?

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My Dad's 2011 Raptor has been having starting issues for about a month now. He turns the key, it turns over, but doesn't actually start; the same thing happens if he tries to start using remote start. It will start once in awhile on a 2nd or 3rd try, after throwing the shifter back and forth from Drive through Reverse several times and trying again, but not most of the time.

It doesn't happen all the time, but every once in awhile, and always at random times.

The first time was accelerating at an intersection a month ago. A second or so after hitting the gas, the engine died in the middle of the intersection. He took the key out, threw the shifter back and forth, tried again, and it started right up without issues.

Later that night, he tried starting it after sitting for over an hour (and had started it several times before without problems), and it failed to start, even after 7 or 8 tries. He had it towed to the dealer the next morning. He even tried starting it that morning in the dealer parking lot, without success. Several technicians apparently started it several times later that day without any issues! They didn't fix or replace anything, because they didn't find any problems. When he got it back, it worked perfectly.

A couple weeks later, it had the same problem at the gas station, after getting a full tank. My Mom told him that her truck (a nearly identical '11 Raptor) had the exact same issues several times in the past, and her trick was to let all the lights in the truck turn off, then try starting. He did that, and it worked!

Tonight, the same issue emerged. He did everything that had 'worked' in the past, and it still failed to start after about 10 tries. It's headed to the dealer on Monday, but what it might be?!? I also want to add that when it starts, it starts flawlessly, without hesitation; as if there wasn't a problem.

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Just replaced the fuel pump in my 99 Suburban. Replacement is an AC Delco unit. When I tried to start it, nothing. Engine turns over but doesn't start. Checked all connections and getting voltage down to new harness. replaced relay from GM dealership and also fuel filter. I used to hear the old pump prime when turning on the ignition but don't hear anything with the new pump. Could it be a bad pump out of the box?

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Mazda B2300 2.3L 1995 model... About a week ago I ran my B2300 out of gas (or so I was convinced I was out of gas) because the engine quit running. After adding gas was unable to start it back up. It turns over but doesn't start.

Here's what we did to try and fix it:

1.) Replaced Fuel Filter
2.) Check the fuel pressure, and it was at 35 psi when the key was on
3.) Replaced all 8 spark plugs (4 cylinder truck btw)
4.) Checked spark of all 8 coil pack slots and 1st and 3rd slots (exhaust side) were not sparking. After replacing coil pack we received spark but truck still didn't start.

We're speculating on the possibility of it being the PCM (ECC).

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So I just finished redoing my head gasket. Everything is hooked back up the way it was prior to the tear down. I'm getting spark, fuel, compression, timing was set correctly according to Haynes, turns over but just doesn't want to fully start up.

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So a truck that was running fine Sat for 2 weeks. Battery died so i sent some coworkers to jump it. They tried using a welder which they didn't get turned down enough. Now the wiper motor stays on even without the key. Radio doesn't work but the dash light still comes on. With a new battery installed it turns over but doesn't start. I know something had to get fried but where to start. Thinking about replacing all fuses and relays...

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Told me I could schedule another appointment to have them clean out the area inside where the filter and blower are located. Told them that service should be provided as a part of the filter replacement if it could be a concern. Although I'm not a car-savvy person, I'm thinking the problem is due to replacing the cabin filter: new filter, increased air flow (and there is a substantial increase of airflow out of the dash ducts) to the fan blower -- which as been operated with a dirty filter for probably a lot of miles and it has "worn" just right, that the increase in airflow is causing the hum. Fan blower spinning faster causing the hum?

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The car sun roof does not work at all. It worked the day I bought it though.

Has issues turning on. Cranks slowly then after a few seconds of struggle it turns. Didn't have this issue when I bought it.

Goes idle when first starting to drive. From park, I put the car in drive, or reverse, and let go of the brake, it basically does nothing. Engine is on as if it were in park or neutral, but the car doesnt move. When I press the gas it takes a few seconds before it decides to actually move.

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When I turn the key in the ignition with the clutch engaged, the engine turns, but pressing down on the gas pedal has no effect. The engine doesn't rev nor does it catch. There is gas in the tank and clean oil. I checked all the connections I didn't find anything loose.

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