1009 hot weather operation

[riggermedic]

Just bought an 86 1009 here in Phoenix AZ. Been in the triple digits lately and am curious if I need to summer-ize. I have not yet added a water or transmission temp gauge. Any suggestions? Should I go with thicker oil to compensate for the higher temps? I appreciate any suggestions.

 

[Assel]

I would not worry about that, since the most "cooling jobs" are done by the radiator there should be no problems... I never had any issues with overheating anything, I think an extra transmission radiator is just needed when you do hardcore towing..for which a m1009 is probably not the right one, rather do that with a m1008.

If your "overheating" lamp works fine and all fluids are on top level you should do fine.

But you should avoid traffic jams, without driving wind the cabin is like a oven, heated by the sun from top, engine from the front & transmission from under it

 

[Rustyshackelford]

Yeah, watch out man, cooking yourself is the main concern around here. At least your rig has sliding windows on the top.

 

[rsh4364]

Adding a coolant temp.gauge is really easy,and fairly cheap to do.

 

[olly hondro]

Chugging along in 4-low, 100+ outside temperatures, for hours= no issue.

 

[rustystud]

Your radiator should be a 4 core unit. It will cool your engine in "Death Valley" if it is operating correctly.

 

[CUCVLOVER]

You might consider Ac or at least a fan and cooler of bottles of water.

 

[Drock]

Adding a coolant temp.gauge is really easy,and fairly cheap to do.

Agreed, I've bin running ah cheap Bosch temp gauge from advanced for around $17.00.

 

[Gunfighter1]

Agreed, I've bin running ah cheap Bosch temp gauge from advanced for around $17.00.

Where did you put the temp probe into? Thats something i need to do. Got my boost and egt gauge but would like a water temop just for the **** of it. As for hot weather im in AZ as well and so far havent had any issues with cooling. Oil is the usual rotela t 15-40 dont bother with anything special.

 

[Drock]

Where did you put the temp probe into? Thats something i need to do. Got my boost and egt gauge but would like a water temop just for the **** of it. As for hot weather im in AZ as well and so far havent had any issues with cooling. Oil is the usual rotela t 15-40 dont bother with anything special.

Well that's the tricky part, I've heard you can put it in one of the heads. But in my opinion that wouldn't be the most accurate spot. A true (total temperature) reading of the engine as a whole would be just upstream of the thermostat as most if not all cars are today. Unfortunately the only way to make that happen with our trucks is to replace coolant crossover tube with one from a HMMWV, that has 3 bosses cast into it. I got mine for $60.00 off ebay but I've seen them go for cheaper lately.

 

[Drock]

Here's ah pic of my setup ........

 

[Gunfighter1]

Here's ah pic of my setup ........View attachment 568721

Thanks for the info, was that a direcr bolt in swap?

 

[rsh4364]

If you are looking for an easier,cheaper route.There is a threaded plug in top of water pump you can take out and thread probe into.The Humvee crossovers are nice to have because of extra ports.Incase you want to add a sensor for an electric fan,or a sacrificial anode.My cucvs are daily drivers so I always add temp.gauge and oil pressure gauges.Also I always add a fuel press. gauge underhood.

 

[MarcusOReallyus]

If you are looking for an easier,cheaper route.There is a threaded plug in top of water pump you can take out and thread probe into.

Is that spot where the flow is into the pump from the radiator, or out from the pump into the radiator?

 

[Drock]

Yes it bolts straight in, you'll need ah couple brass plugs to fill the unused ports. I got mine from Ace hardware.

 

[Drock]

If you are looking for an easier,cheaper route.There is a threaded plug in top of water pump you can take out and thread probe into.The Humvee crossovers are nice to have because of extra ports.Incase you want to add a sensor for an electric fan,or a sacrificial anode.My cucvs are daily drivers so I always add temp.gauge and oil pressure gauges.Also I always add a fuel press. gauge underhood.

Unfortunately that's also ah bad, if not worse spot then the port in the head. I had mine plugged in there at first, and quickly realized all it was reading was the cooled water coming (out of the rad). The gauge would never go above 160°

 

[rsh4364]

Unfortunately that's also ah bad, if not worse spot then the port in the head. I had mine plugged in there at first, and quickly realized all it was reading was the cooled water coming (out of the rad). The gauge would never go above 160°

Mine seems to work fine,I start it it runs up to 190,then thermo opens and drops to 175-180 at cruising speed.At slow speeds it reads a bit cooler.

 

[Drock]

Mine seems to work fine,I start it it runs up to 190,then thermo opens and drops to 175-180 at cruising speed.At slow speeds it reads a bit cooler.

Well there you go, your reading the (radiator), not the (engine). And if your getting 190° at that point it must be running HOT!! Think about it, if the coolant (entering), the engine is already 190°. Then what is it leaving the engine? The only way to get an honest, accurate reading of the (total temperature) of any engine is to take that reading just upstream of the thermostat. Remember your thermostat is what controls the operating temperature of the engine.

 

[MarcusOReallyus]

That Hummvee crossover is looking better and better.

 

[Drock]

That Hummvee crossover is looking better and better.

Agreed, I'm really blown away buy the fact that both general motors & the government, didn't see the need for a temperature gauge in a big block, diesel truck, intended to haul or tow heavy loads while in 4WD , off road? Anyway it's ah relatively easy, and cheap fix.