Hello,

 

Have a 1989 Dolphin. 3.0VZE engine. What is the newer TPS part number. I know the original one (89452-28030) is discontinued. LC engineering website said 89452-20050 replaced it. Google AI said 89452-12040. So which one are you guys using? No after market please. Thanks.

I took mine out and replaced it with a Champion.rope pull start. Tite fit but it works great. I can run both AC and microwave at the same time. It's 3500 watt. Runs 8 hrs on a gallon of gas. I Carry a 2 gallon of clear gas. I made my own custom mount. Easy to take out using a floor jack. Made my own custom exhaust pipe. Nice and quiet compared to the original unit and more power. Using the same spot in the RV.

Well here's an interesting update on this situation for anyone interested. Long story short, I bought this rig 7 years ago, drove it home from Miami to the Tampa area, and immediately tore it apart and spent about 3 years restoring it. In this time I pulled the factory radiator out of it and installed the CSF all metal 3 core performance radiator. Well I have been using the truck for around 4 years now and it has always ran warmer than I wanted it to while on the interstate. It has never overheated but definitely gets too close to red for comfort on a summer day in Florida heat, to the point I turn the AC off and deal with the heat. Keep in mind the entire cooling system is new. It runs cool city driving all day long, and idles all day without issue. It has never lost coolant.

 

Well fast forward to a trip to some springs a few weeks ago, I turn the AC on and get one nasty squeal sound. I immediately turn AC off and sound is gone. Jump out and pop the hood and check out that crank pulley! I have a video of it dancing around in a very scary way, but can't upload the video to this forum. The rubber finally gave out! With the AC on it would spin inside of itself. I had suspected this in the past when my timing light gave an almost 180 out reading on the crank, but the truck ran just fine.

 

 

New pulley going in...

 

While I had it apart this far, I decided to finally try out an experiment with the radiator. I read a few reviews online of other people with other vehicle types also having interstate overheating issues after installing a 3 row radiator, something about coolant flowing more slowly and not keeping up. So, I ordered a TYC single row radiator and threw it in. 

 

Well it was a near 90 degrees today on the first test drive. After reassembling and burping the system and checking for leaks I took it on a "torture test". I hit the interstate, brought it up to 65 mph which is faster than I typically drive the rig (I usually cruise about 58 mph). I also turned the AC on full blast. Previously with the CSF radiator, this would have absolutely heated it up. Here is a photo of where the temp gauge would hit previously (usually with AC off!!!) on the interstate with the CSF 3 row.

 

 

And here was the highest the temp hit today with AC on full...

 

 

It may not look like much, but it makes for a much less stressful ride. Especially considering this "interstate torture test" was at a faster speed than normal and AC on highest setting. 

 

So it would appear that the CSF radiator did indeed have interstate cooling issues. My dad had another theory that the slipping crank pulley perhaps was not spinning the water pump at full speed if it was truly slipping all the time, but that is unknown. If you made it this far, thanks for reading. Perhaps someone will find this information useful or have something interesting to chime in. 

Edited 18 hours ago by Odyssey 4x4