H3 New Hummer Owner

[navaro1982]

My name is Jamie and I'm from Mississippi. I recently purchased a 2007 Hummer H3 that so far has only minor issues. I didnt know the person I bought it from so I did a Carfax report and everything came back clean. The person I bought it from told me what issues it had and I was ok with that for the asking price. So far I had to replace the passlock, cylinder 1 spark plug, and ignition coil. I'm gonna have to have it checked out again because it still throws the check engine light for misfire in cylinder 1. Besides the few issues I've had I have to say I love this vehicle. When I bought it, it had 180000 miles on it. That was the only thing stopping me from wanting to buy it. I'm glad I did though. Keep a look out for updates if you're interested. I plan on adding a roof rack and brush guard. Maybe one day I'll lift it and get bigger tires not sure about that at the moment.

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[Panzer07]

Welcome to h4o...

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[Happy Hummer]

Yes welcome.
Have you tried running some techron thru your engine? Does wonders for H3's.
Also check to see if your intake manifolds bolts are all tight. What spark plugs did you use?

 

[Peep]

Welcome

 

[3Hummers]

Welcome to HF.

 

[navaro1982]

Yes welcome.
Have you tried running some techron thru your engine? Does wonders for H3's.
Also check to see if your intake manifolds bolts are all tight. What spark plugs did you use?

ACDelco and I just removed my throttle body and cleaned it real good with the throttle body cleaner. I made sure the bolts were tight. I also cleaned the mass air flow sensor. I'm just gonna have it checked out just in case.


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[mjferencak]

Welcome to the forum. You still have some life in that engine if you take care of it by staying on top of regular maintenance. Where in Mississippi are you? I didn't know we had mountains.

 

[navaro1982]

Welcome to the forum. You still have some life in that engine if you take care of it by staying on top of regular maintenance. Where in Mississippi are you? I didn't know we had mountains.

I live in Meridian. I took that pic a couple of weeks ago at Stone Mountain in Georgia.


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[GreatDaneHummer]

Welcome, nice looking clean H3.

 

[woodwardsh3]

said above the miss fire could be a dirty injector or all of them. I had my hummer for about a year and a half. And I thought it ran fine, I had a miss fire come up 2 or 3 times so I tried the Chevron Techron Which I have had great results with But not this time. So then I tried [FONT=Amazon Ember, Arial, sans-serif]ISO-HEET Premium Fuel-line Antifreeze Water Remover and Injector Cleaner. I put 1 bottle per tank I bought a 6 pack. 4 gas fill ups and it was like someone put a turbo in the hummer. Im not kidding It was night and day difference. My wife did not like driving it as she said it had no pick up and it's slow, then after the fuel treatment she ask what did you do to it and how much money did you spend. She likes driving it now. With that many miles I would bet your injectors are dirty, If you don't want the hassle take it in to the dealer and have them clean your injectors. I would think that would be less then $100. You can buy HEAT at amazon for about $6.50 a bottle.good luck and welcome to this great forum. [/FONT][h=1][/h]

 

[Chimpy]

Did you run the 4 tanks consecutively with cleaner? I have always been skeptical of that practice being afraid of that much cleaner opening a pandora's box of more debris being released into the fuel system. Glad to hear it worked for you. I would like to believe that running a steady diet of top tier gasoline through my H3 will prevent such problems to begin with.

 

[woodwardsh3]

No I ran them every other tank full. I always use top tier gas, but I bought the hummer used with 100,000 miles on it and who knows what they put in it. And you probably already know there is no changeable fuel filter on H3.

 

[navaro1982]

said above the miss fire could be a dirty injector or all of them. I had my hummer for about a year and a half. And I thought it ran fine, I had a miss fire come up 2 or 3 times so I tried the Chevron Techron Which I have had great results with But not this time. So then I tried [FONT=Amazon Ember, Arial, sans-serif]ISO-HEET Premium Fuel-line Antifreeze Water Remover and Injector Cleaner. I put 1 bottle per tank I bought a 6 pack. 4 gas fill ups and it was like someone put a turbo in the hummer. Im not kidding It was night and day difference. My wife did not like driving it as she said it had no pick up and it's slow, then after the fuel treatment she ask what did you do to it and how much money did you spend. She likes driving it now. With that many miles I would bet your injectors are dirty, If you don't want the hassle take it in to the dealer and have them clean your injectors. I would think that would be less then $100. You can buy HEAT at amazon for about $6.50 a bottle.good luck and welcome to this great forum. [/FONT][h=1][/h]

Thanks for the advice. I've been using Techron when I can, but I will definitely try the heat.


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