H3 problems

RonJon1985 · Dec 12, 2016

My 06 h3 was bought a few weeks ago and I thought I was getting a deal and seems I just got a headache. First was the exhaust vibrate I finally fixed that, and then I got a "oil" message I changed the oil sensor sender and fixed that. Two days after that I get another check engine light and now I got codes p0102 & p0300. I haven't even payed the tax title and license yet and if I have a cracked head I'm really in a bad situation. Could the MAF sensor(p0102) be causing the engine misfire code (p0300)? And if it's throwing the code for the M.A.F. Is it bad or could Cleaning it fix the problem? Thx everyone I know this is my first post. I also researched and my vin # is a later model 06 out of the head issue range.

giovannihdzretir · Dec 12, 2016

Sorry to hear that but I remember when I got my wife this one we have for her Valentine's present the following mo the transmission went out..I wanted to let it go then cause I just pd $3,000 dwn then had to put in a transmission on my own that cost me 3 too.omg I feel y tho. I always had problems with loss of power, traction failed, nw I need TCM I believe..it won't get out of gear

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RonJon1985 · Dec 12, 2016

giovannihdzretir said:
Sorry to hear that but I remember when I got my wife this one we have for her Valentine's present the following mo the transmission went out..I wanted to let it go then cause I just pd $3,000 dwn then had to put in a transmission on my own that cost me 3 too.omg I feel y tho. I always had problems with loss of power, traction failed, nw I need TCM I believe..it won't get out of gear

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I read the reviews on edmunds and they were all so good. I wish I would have done some more research. I always loved the look of the hummer and thought they were a solid vehicle. They seem very problematic.

4speedfunk · Dec 12, 2016

Check the battery connections.

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Romeo · Dec 12, 2016

RonJon1985 said:
My 06 h3 was bought a few weeks ago and I thought I was getting a deal and seems I just got a headache. First was the exhaust vibrate I finally fixed that, and then I got a "oil" message I changed the oil sensor sender and fixed that. Two days after that I get another check engine light and now I got codes p0102 & p0300. I haven't even payed the tax title and license yet and if I have a cracked head I'm really in a bad situation. Could the MAF sensor(p0102) be causing the engine misfire code (p0300)? And if it's throwing the code for the M.A.F. Is it bad or could Cleaning it fix the problem? Thx everyone I know this is my first post. I also researched and my vin # is a later model 06 out of the head issue range.

Check what type of air filter is in the truck. If it's an oiled filter like K&N it could be a dirty MAF sensor. You could get a CRC MAF Cleaner to clean and see if that helps. While your in there clean the throttle body. As for the the misfire, does your truck feel like its misfiring? You'll notice a rough idle. Try cleaning the battery terminals as 4Speed sugessted and making sure the terminals are tight. Remove the coil packs and inspect them for water damage and also check that the springs in the could packs aren't bent and that the spark plugs are good.

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alrock · Dec 12, 2016

Cylinder head issues more often have a specific cylinder code, i.e. P0301-P0305 vs. P0300. Not exclusively true, but more likely. I Romeo has you on a good start. Check for cracks or air gaps on the intake tube.

giovannihdzretir · Dec 12, 2016

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giovannihdzretir · Dec 12, 2016

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giovannihdzretir · Dec 12, 2016

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giovannihdzretir · Dec 12, 2016

I bought this today at Autozone

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RonJon1985 · Dec 13, 2016

Romeo said:
Check what type of air filter is in the truck. If it's an oiled filter like K&N it could be a dirty MAF sensor. You could get a CRC MAF Cleaner to clean and see if that helps. While your in there clean the throttle body. As for the the misfire, does your truck feel like its misfiring? You'll notice a rough idle. Try cleaning the battery terminals as 4Speed sugessted and making sure the terminals are tight. Remove the coil packs and inspect them for water damage and also check that the springs in the could packs aren't bent and that the spark plugs are good.

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Yea it does run a little rough. I'll try the following this weekend. I sure hope it's something minor.

RonJon1985 · Dec 13, 2016

giovannihdzretir said:
I bought this today at Autozone

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A new sensor?? What was going on?

giovannihdzretir · Dec 13, 2016

It's attached to the transmission where the gear shifter is but that didn't work. It's showing traction failed, ck eng light on, then Autozone shwd lost communication

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amrg · Dec 13, 2016

Check the 4Hi/Hi lock/Lo buttons are not stuck pressed in, and the button module itself is connected. (Need to remove center console to make sure the connector is properly plugged in)

giovannihdzretir · Dec 13, 2016

Some reason all codes, r not showing even ck eng light off.. crazy right

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4speedfunk · Dec 13, 2016

Again. Check the battery connections.

giovannihdzretir · Dec 13, 2016

4speedfunk said:
Again. Check the battery connections.

Thanks will do

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giovannihdzretir · Jan 12, 2017

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giovannihdzretir · Jan 13, 2017

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Johnnymarshukov · Jan 19, 2017

Replace your MAF sensor. I got the same code. It's the easiest fix.

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H32NV · Jan 19, 2017

I got these same codes. I replaced the throttle, MAF sensor, Battery, battery cables, alternator, and a bunch of other things. it would seem to work for a day or so, then repeat the same things over and over again. Took it to a dealer and they wanted to do a new TCM/BCM at a cost of over $1000. Still not convinced(thought about it, multiple things failing at once = something common, maybe a signal ground in the wiring).

Took it to an auto electrical specialty shop, for $150 they diagnosed that it was a corroded ground, and a half melted wiring harness that got too close to the headers because it's mount had sheared off. Another $75 for the fix and I haven't looked back since.

giovannihdzretir · Jan 23, 2017

Johnnymarshukov said:
Replace your MAF sensor. I got the same code. It's the easiest fix.

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Where is the maf sensor what does it look like and thanks so much,[emoji2]

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Johnnymarshukov · Jan 23, 2017

It's short for Mass Airflow Sensor. And it's a black plug in located by your cold air intake. Google it. There's plenty of pictures of it.

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4speedfunk · Jan 24, 2017

While your motor is idling...gently tap on the MAF sensor with a screwdriver handle, and see if the motor stumbles, hesitates, or sets a code. This will sometimes (but not always) reveal a bad MAF.

Peep · Jan 24, 2017

I just took out the MAF sensor, sprayed it with cleaner and the problem went away. No fix needed

H3 problems

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