Tim,
Done deal for me on the resistors and I'll see you Sat. for wrenching session.
Buck
Done deal for me on the resistors and I'll see you Sat. for wrenching session.
Buck
93-97 Coolant Temperature Gauge Modification (2 Viewers)
- Thread starter RavenTai
- Start date
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Buckru said:
Got home from work today and the garage was a nice 103 degrees. That was with the two bay doors open about 18" and the side door wide open.
That PHH is gonna be fun! I think I'll start hydrating about now...
Thanks RavenTai great mod.
Sunday afternoon beers with Landtank conviced me to mod the guage. Very easy mod. I would recomend a cloth towel over the steering wheel assembly. It will help avoid any scratchs to the clear housing on assembly. And remember that the steering wheel tilts that helped alot for screws and assembly.
BTW, My truck is running hot... I will be doing the landtank fan clutch mod and new drive belts this weekend.
Thanks
Sunday afternoon beers with Landtank conviced me to mod the guage. Very easy mod. I would recomend a cloth towel over the steering wheel assembly. It will help avoid any scratchs to the clear housing on assembly. And remember that the steering wheel tilts that helped alot for screws and assembly.
BTW, My truck is running hot... I will be doing the landtank fan clutch mod and new drive belts this weekend.
Thanks
Cattledog said:
I've got a half bottle of 3000k around somewhere. Your welcome to it. I needed a botlle and a half on mine but I had lost some on the many times I took it apart.
Thanks Landtank! 
I will take you up on the offer. Are you around this weekend, I can bring the beer!
I will take you up on the offer. Are you around this weekend, I can bring the beer!
I think so, I'll know more when I get home tomorow. You could throw on that old clutch and bring down the new one and we could go threw it at my place.
As for the beer, peepers left a bunch when he was here last so that's covered. I'll pm him and maybe he'll show up and we can get his dual battery going.
As for the beer, peepers left a bunch when he was here last so that's covered. I'll pm him and maybe he'll show up and we can get his dual battery going.
I did the mod with 150 and 100 ohm and I am a bit frustrated...my gauge sits a needle above horizontal instead of a needle below.
Brand new OEM T-stat, new blue clutch, fresh coolant, recently cleaned fins on rad and condenser.
Didn't matter if I let it idle with the A/C on, drive 60 with or without A/C, stop and go...wouldn't really move...just sat there above horizontal a needle or so.
I thought it was supposed to be below horizontal with this set-up?
Maybe I'll have to scrounge a real-time scanner to plug in and see what my temps are....
Brand new OEM T-stat, new blue clutch, fresh coolant, recently cleaned fins on rad and condenser.
Didn't matter if I let it idle with the A/C on, drive 60 with or without A/C, stop and go...wouldn't really move...just sat there above horizontal a needle or so.
I thought it was supposed to be below horizontal with this set-up?
Maybe I'll have to scrounge a real-time scanner to plug in and see what my temps are....
i realised yesturday it depends on how I look at it. Just glancing down from my driving position it looks to be horizontal, but if I crouch down and lean to the left to look more straight on it looks to be just a little higher than horizontal.
Part of the error you get with these types of gauges.
Part of the error you get with these types of gauges.
tarbe said:
I PM'd you back. That would be frustrating. By changing the 110 ohm resistor that Raven recommends to a 100 ohm resistor the center should be at an even warmer temperature which translates to the needling being lower when warmed up. If somehow the 150 ohm resistor replaced the 75 ohm resistor the center would be a lower temperature which would result in the gauge needle being higher than center when warmed up. Either that or the truck runs warm. I have a sneaking suspicion that the resistors got swapped somehow.
The 110 resistor should center at 189 where as the 100 resistor should center at 194 when used as a replacement for the 75 ohm resistor.
Are the resistors clearly marked?
Sorry to hear about your frustration Tim but you know I can sympathise with ya.
Buck
Sorry to hear about your frustration Tim but you know I can sympathise with ya.
Buck
I did replace the diode with the 100. I have swapped them around and will test drive at the earliest opportunity and report back.
In the original mod, the higher ohm resistor replaced the original resistor and the lower replaced the diode. I kept that relationship in mind as I was doing my 100/150. Assumption got me again!!
In the original mod, the higher ohm resistor replaced the original resistor and the lower replaced the diode. I kept that relationship in mind as I was doing my 100/150. Assumption got me again!!
Everything is fine now...needle is one full width below horizontal at normal operating temp. Should be 200 at horizontal.
Thanks RT and Darwood!
Thanks RT and Darwood!
Add another to the list...we just finished Buckru's gauge with the 100/150.
Testing on the beach tomorrow at the TLCC-H monthly meeting!
Testing on the beach tomorrow at the TLCC-H monthly meeting!
- Thread starter
- #174
Derek I was going to PM you but aparetly I have lost that ability,
the alternate resistor setups are going well, nice work
If you have some time and you think they are ready could you do a write up about the alternate resistorss and I will put it in the first post in this thread, what resistors, what the results are and anything else you think might be needed.
let me know
Raven
the alternate resistor setups are going well, nice work
If you have some time and you think they are ready could you do a write up about the alternate resistorss and I will put it in the first post in this thread, what resistors, what the results are and anything else you think might be needed.
let me know
Raven
Temp guage is now modified with 100 and 150 resistors.
Truck has a new blue clutch, new t-stat, new phh and fresh green coolant.
On the highway the guage sits between the cold line and horizontal and really hasn't moved up much at all. Based on what I have read I would say that equates to 180-190 degrees.
While driving seven miles down the beach, some deep sand mostly fairly well packed in 95 temps, the guage stayed below horizontal the entire time.
This week I will be driving into Arkansas with a loaded truck and will have a chance to see how she does in hills
Another big thanks goes out to Tim for helping me with this.
Buck
Truck has a new blue clutch, new t-stat, new phh and fresh green coolant.
On the highway the guage sits between the cold line and horizontal and really hasn't moved up much at all. Based on what I have read I would say that equates to 180-190 degrees.
While driving seven miles down the beach, some deep sand mostly fairly well packed in 95 temps, the guage stayed below horizontal the entire time.
This week I will be driving into Arkansas with a loaded truck and will have a chance to see how she does in hills
Another big thanks goes out to Tim for helping me with this.
Buck
Hey RT,
Just checking to see if you had planned on doing the fan clutch mod. I know you were concerned that your engine temps may be running slightly on the high side. FWIW, I drove down to Orlando a couple of weeks ago and here's what I observed: Daytime, 80 mph, AC on, and generally flat terrain... needle go to around near 3/4 on a fairly consistant basis. At night the gage seemed to stay within a needle or two of middle. On one occasion when I stopped for fuel, when I restarted the engine, the needle was right at the red, but settled back down within a few seconds.
I was kind of waiting to see how the mod pans out in regards to what is the best approach.. higher viscosity fluid or a combination of timing advance and higher viscosity. Be interested in hearing what you decide to do.
Hope everything's going well with your new job.
Regards,
Rookie2
Just checking to see if you had planned on doing the fan clutch mod. I know you were concerned that your engine temps may be running slightly on the high side. FWIW, I drove down to Orlando a couple of weeks ago and here's what I observed: Daytime, 80 mph, AC on, and generally flat terrain... needle go to around near 3/4 on a fairly consistant basis. At night the gage seemed to stay within a needle or two of middle. On one occasion when I stopped for fuel, when I restarted the engine, the needle was right at the red, but settled back down within a few seconds.
I was kind of waiting to see how the mod pans out in regards to what is the best approach.. higher viscosity fluid or a combination of timing advance and higher viscosity. Be interested in hearing what you decide to do.
Hope everything's going well with your new job.
Regards,
Rookie2
Rookie2 said:
Which resistors are you running?
Rookie2 said:
Rookie2,
This is normal. I don't have the RT mod; mine is an aftermarket coolant temp gauge with the probe in the water neck. I will see large rises in the gauge during high ambient temps after the engine is shut down following a trip at highway speeds.
-B-
tarbe said:
I've got the original RT version. I can't remember the resistor values.. 50 and 100 maybe..??
Beowulf said:
Thanks B. I wasn't really concerned about it and thought it was somewhat to be expected. If I was one of those that's got a vehicle that's running hot (AC cutoff hot that is), I'd be worried about it. That extra spike at shutdown can't be good if you're already at 225 to 230.
Rookie2
RavenTai said:Derek I was going to PM you but aparetly I have lost that ability,
the alternate resistor setups are going well, nice work
If you have some time and you think they are ready could you do a write up about the alternate resistorss and I will put it in the first post in this thread, what resistors, what the results are and anything else you think might be needed.
let me know
Raven
Sure thing. I'll have to find some time
So you guys with the alternate resistors, do you think where it centers is too low or do you like where it is?
