dripley

I have the ADII 165 and do not experiance a pressure drop with the cycling of the heaters. My question would be where are you getting your power for the pump from? My relay is plugged into the oe harness for the oe lift pump and the 12v power comes off of the alternator. If you are wired into another power source that is affected by the heater cycling you would get a voltage drop to the pump and lower pressure during their cycles. That would be my thought anyway.

I have been driving a manual forever and dont know any thing about the set up. Not sure that i have seen any body with that particular set up. Hopefully someone will chime in with some knowledge of it.

I am thinking the same thing on my current tstat. Running thru that heat cycle did something to it and it now functions better. As far as a 195* tsat, I have tried several differant 190* and a cummins 180*. whats $30 more for a 195. Next chance i get I will throw one in and see. When its all said and done I will soon be opening a used tstat store. Come by and have look at our inventory. Drip's Used Thermostat Store Fluctuation is our specialty

I am set up like Mike's is except I have no sender, I only have a mechanical gauge. I also have the tapped 90 like cumminapart has but i just capped it and use it to cnnect a test gauge to and to bleed the low pressure system when needed.

Welcome. Looks like you are on the right track, but the 216 is not a good sign for the vp. The key does not always show all of your codes. It is best to get a scanner to get them all. you are at the right place for help. Again welcome.

My reasoning for boiling the tstat was not to watch it operate, but to put it under some heat stress. Mainly because the one in the truck now was exposed to 215* temps on my pull over the mountains. It is the only one i have that has been exposed to that and it sarting working better after that exposure.My oe stat was a 190* and every one i have purchased has been a 190 except for the last which was a cummins 180. Figured I would give it a try since the 190 non cummins were not working right. It acted the same way except it ran about 10* cooler while fluctuating.I need to think about the 3rd statement a little. But the oe used to hold very steady at 188 or 189, just below the 190 mark on the temp gauge for 6 to 7 years before it went.My temp fluctuations happen year round. The only differance being when I stop and idle in very cold weather it does cool faster. Other than that it fluctuates year round and holds in the 180's while driving down the interstate empty and 3 t0 4 degrees warmer if I am in hilly country if I am pulling the trailer.

It does not stay steady for me. But it is the same one several people including Mopar uses with succes. I might have that number wrong, I keep forgetting to get the box out of my tool box at work. the in mine now also swang wildly just like the rest until I came over the mountain and the temp hit 215 on the gauge and it now works better than all the rest I have used. I took that one out a month ago and installed a cummins 180(part # 3967195) and it was only keeping between 150 and 170 and swinging alot. So i renstalled the one from Orielly's and it still holds in the 180's 85% of the time. It is a Murray part#4289, says made in Isreal on the box, but germany on the stat. Every time I have chaged the stat the block is full of water. I have thought about taking one of the stats that swings and boiling it in a pot. It seems the Murray worked way better after it was heated to 215. If you have an old try and see what happens. I still have four of last ones I bought and think I will give it a try. The jiggle pins i have heard people speak of are apprently the pins in the tstat. and they are there to let air bubbles thru from what I saw when i googled it. If the cooling system was to air lock as some have suggested, it seems to me you would go into an over heat condition since the system is locked. I had gotten used to this situation and just living with it. But now it bugs the heck out of me and I want a solution. I talked Mike the other day and next ime he changes one when he changes his coolant I am going to get him to send me his old one and see what it does in mine. Enough of all this, there has to be a solution/answer to the problem. I just dont know what it is yet.

I am for it. work gets in the way sometimes but i did enjoy it. what say you other folks.

I have tried 2 napa's. The last was I think a 375190, still got the box somewhere. It matched the part number several people said to use, could have the number wrong though. Seems it works for most folks. There does seem to be alot of people that have this issue so we are not alone. But it bugs me that most folks dont have the problem.

I idled mine like a gasser when I first bought it until i figued out it did not do alot of good. Driving it was the only way to warm it up. I first had to do alot of learning when I bought it. Did not know about all the forums.

I have thought about the air lock even tried to burb it once. It seemed to be full. The one in it now does a better job of holding the temp in the 180's. drops a little lower around town. I have tried the napa along with 3 or 4 other brands. they all worked pretty much the same, swinging from 160 to 180 mostly to the low side.

I went there a few times over the past 6 months. Nobody was there and I rang the bell a few times. Just figured everyone was busy doing other things.

Log before I had an ebrake I used to crank it up and let it run for a while. I gave up on that method after seeing little temp rise by idleing. After that I just started driving it to warm it up after idleing for a few minutes.

It was enjoyable.

I believe they would be 4 strokers with 12 less valves.

That good. At least you wont have to take it all apart again like someone I know. It is easier the second time.

From seeing the inside it appears to be doing its job.

Great time to bring this up, but how are your ball joints?

Occasionally Mr. Murphy is my copilot. But thankfully not often.

That was interesting. How does the variable pitch turbo enhance engine brakeing?

That is how I did mine. No problems since.

I came here as a sponge also. That will change with time. There is alot of knowledge here that everyone is willing to share. Next thing you know you will be sharing.

I am on the road from the job to home alot and all i carry is tools. I figure no matter what I carry if something breaks it is going to be the part i dont have. Some might think i crazy but this has served me well for the past 25 years. I'm sure some others here will have something to add though.

Mine have yellow tops.

I have the same outerware as 98white does. It is the only one I ever saw. Except mine aint that pretty any more. Guess I should wash it. I do not have a heat sheild on it and have no problems egt's summer or winter. I did not really notice any differance when I made the change.