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Good day, Couple questions: First question : I’m trying to understand the Engine Speed Sensor, looking at the trouble shooting guide in ™ …387-24-1 section 2 pg 402 it says .3 volts min at idle but it doesn’t say a/c or d/c. I see it marked as a/c in the 4L80 supplement,,, so should I read A/C...

What should be normal operating temperature of a 4l80e transmission ? I went for a 10-15 min drive and crawled under Humvee after and transmission pan was very hot, I’ll try again tomorrow and get some temperature numbers with my temp gun. Thanks Sent from my iPhone using Tapatalk

Are all the eprom’s compatible in the TCM’s ? I see different years I assume different programming for shift points as trucks got heavier ? I’m just trying to learn more about the different Humvee’s. Thanks Sent from my iPhone using Tapatalk

I’m trying to check DTC codes on my 2005 M1152 and it just respetes 12, I let it run thru 7 times and just respetes 12, is it safe to assume there are no problems with TCM ? I dont see anything in 4L80 manual or ™’s addressing this. Thanks Rick

I’m getting codes 38, 85 and 86. Where to start ? I unplugged the external connectors and cleaned with electrical contact cleaner. Where next ? Issue is she’s going into limp mode. I checked battery voltage, 14.37 coming into rear battery, reset CB, repaired 2 wire that looked if’y, checked...

Has anyone found a good fitting floor mat for front and rear ? If not what are you using ? I have a humvee with no floor cover at all, I'm thinking of using rhino liner sprayed on. Anyone put sound deading mat down then cover with rhino liner or ?

I’m trying to remove the extension piece for wiper, I’ve removed the set screw but they don’t want to move. Am I missing something ? Thanks Sent from my iPhone using Tapatalk

I've looked in every Tm and just can't find the missing piece. See attached pic. Need to source replacements. I'm installing a 2 man hard top from a M1152A1 on my M1152, haven't taken my M1152 apart yet until I source parts. Thanks in advanced.

TM says 700 but says nothing about A/C on or off, do you set RPM with A/C on ? I'm in Florida so A/C is on 90% of the time, idle is 700 now at idle but put it in gear and turn A/C on and she drops to 650. Not a big deal just curious. Thanks

I have an 1152 6.5TD, looking for parts break down of turbocharger, pictures of disassembled unit, troubleshooting info etc. I don’t think mine is working, I test drove it with doghouse and heat shield removed, before test drive I confirmed the waste gate moved freely. Waste gate never moved...

I see a small amount of coolant coming from what appears to be a weep hole on underside of my water pump. My question is do the water pumps have weep holes ?

I find the schematics in the back of the book but cant seam to find the tach install, I'm trying to find the wire numbers from the tach to the connecting wires behind the instrument cluster. Was the tach installed under a MWO or was it standard ? My truck is a 2006 M1152 pre 300,000 sn

Anyone running this weight oil ? I currently run 15w40. I don’t live in cold climate just curious. Sent from my iPhone using Tapatalk

Planning to install 2 man military hard top on my M1152, it does have attachment points on A pillar. My question is can I use regular B pillar or do I need different B pillar. B pillar currently installed is for soft top. Thanks Sent from my iPhone using Tapatalk

My M1152 has these all around, Friend thinks it some kind of RFID

Need help figuring this out, my 2006 M1152ECV 6.5 Turbo gets hot when I drive, sitting in drive way I can let her run for hours no issue. So what I've done so far; Changed all hoses, new surp belt, new OEM thermostat, flushed radiator, fresh antifreeze mixed to 50/50, preformed eng block test...

Anybody have this before ? The brake light switch in my M1152 (left side) gets really hot. I don't see a test procedure for the switch in the tm's, I can't imagine it's supposed to get hot. Also I believe the right side is brake light what is the left side ? I think I remember reading it has...

Need help identifying items circled in red, parts book does not list them separate, just trying to figure out what they're for. They are on my M1152.

Need help id’ing parts circled in red. I see my windshield frame has something I don’t recognize. Thanks Sent from my iPhone using Tapatalk

Looking close at pictures I see “Engine Rotated Method” painted on my hood (humvee still in EUC limbo) any ideas ? I assume it mean engine is not seized. It’s a USMC M1152. Humvee not running (no batteries or belt). Thanks Rick