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Old 06-08-2014, 01:17 PM   #1
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TST Tpms ??

Hi,
Recently, last week, I purchased the TST 507 system and installed it on my 23' Coachmen Class C. I have hub caps on both axles.
Here's my dilemma. I can't get any readings from my rear tires unless I take the hub caps off. They(TST) never heard of this issue. If I take them off, AOK. Put them back on, and in an hour, they are all gone again. If I set the monitor right on top off the tire with the hub caps on, it will eventually see them.
We're only talking about 8' distance from the monitor to the sensors. The front ones seem to work OK, because where the sensors are there's a hole in the hub cap.
TST is going to send me a repeater, and I'm keeping my fingers crossed that it solves the issue. We want to get on the road.
Has anyone else had this type of problem, and if so, what did you do? I had a Pressure Pro system on it before, and no issues, just wanted to update my TPMS.
Thanks,
Rick
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Old 06-08-2014, 01:32 PM   #2
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I've had nothing but issues with those sensors since new. My rear sensors like to take lots of naps. Not only that, but they are not accurate. I totally hate it, but I'm stuck with it.
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Old 06-08-2014, 01:49 PM   #3
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Not very encouraging. When did you get your system?
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Old 06-08-2014, 02:04 PM   #4
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I have the TST flow through sensors on the rear, in the open and no problem. I have the TST regular sensors on the front, due to wheel cover clearance. No problems at all.
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Old 06-08-2014, 02:12 PM   #5
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We bought our coach last October and the TST was one of the first things we bought for it. This was our first motorhome and when I heard that you should check the tire pressure frequently I knew there and then that I needed something to make it easier. Install the sensors and the very first thing I noticed was that the reading did not match my digital gauge. On my truck and DWs SUV, if I read 32 psi on my digital gauge, the dash display would also be the same. All of the TST sensors were off and one of them by 10 psi. I even bought another digital gauge to see if the one I was using was off in the higher PSI ranges....it was not.

Since I don't trust them, I just use them as leak detectors. I set the alarm ranges as wide as possible because it likes to go off a lot. There are a couple of sensors that work intermittently and that also makes the alarm go off.

It's my fault as I should have send it back shortly after experiencing the problems. Once the other sensors start giving me problems I'm tossing it and will be researching for a more reliable system.
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Old 06-08-2014, 02:16 PM   #6
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I bought our first set when they first came out and have been running them ever since. No problems at all and the customer service is excellent.
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Old 06-08-2014, 02:22 PM   #7
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Been doing the research on remote pressure sensors and monitors for a few weeks. Lots of info out there to consume. I'm still in the undecided stage. Yes, I an convinced it is a great idea, but for every make and model I look at there appears to be something I don't like. For instance ... I need to get something that will fit in the openings in an Alcoa wheel. I'd like to not have to fret with a repeater, but might have to anyway. A stainless steel bus might eat the signal from the sensors.

Then I watched all the videos put out by TST. Hmmm ... those folks need to work on the presentations a bit. The very video that I was hoping to watch and see how to install the non-flow through sensors completely obscured the install operation. The guy spoke of the little wrench but didn't show how it was used. Not that it is likely to be rocket science, but still, I'd like to view a decent instructional video.

Accuracy is another concern. Are they accurate to, say within one or two pounds? Temp the same way.

Does anyone have a suggestion on how to overcome the valve stem problem on the outer dual? Mine are facing inward, and the inner dual stem faces out and just barely peeks out of an opening in the aluminum wheel. It appears I may have to have all the duals removed and have the stems repositioned and extenders put on. Potential air leak problems induced here?
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Old 06-08-2014, 05:38 PM   #8
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Keep complaining and they'll keep sending you more defective parts. The first time one of them leaks over night and leaves you stranded, call them and see what they say?

I had to have their sensors cut off my valve stems due to galvanic corrosion and that was when I found out what happens when something other than another sensor goes bad.

This product seems to be getting great reviews so far. And they're only pressure transducers, not solid rocket boosters. They're also made with brass threads not the over seas pot metal like you see on the TST units

TPMS SYSTEM (6 SENSOR)
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Old 06-08-2014, 05:46 PM   #9
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Quote:
Originally Posted by Moonrover View Post

Does anyone have a suggestion on how to overcome the valve stem problem on the outer dual? Mine are facing inward, and the inner dual stem faces out and just barely peeks out of an opening in the aluminum wheel. It appears I may have to have all the duals removed and have the stems repositioned and extenders put on. Potential air leak problems induced here?
After the failure of my TST system I bought a Dual Dynamics Crossover tire balancing system. I had the same shop that cut the TST junk off my stems install it. I traded to a new coach and have since installed the same unit on this one only I did it myself



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Old 06-08-2014, 05:49 PM   #10
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Quote:
Originally Posted by DGShaffer View Post
Keep complaining and they'll keep sending you more defective parts. The first time one of them leaks over night and leaves you stranded, call them and see what they say?

I had to have their sensors cut off my valve stems due to galvanic corrosion and that was when I found out what happens when something other than another sensor goes bad.

This product seems to be getting great reviews so far. And they're only pressure transducers, not solid rocket boosters. They're also made with brass threads not the over seas pot metal like you see on the TST units

TPMS SYSTEM (6 SENSOR)
I need to remove my loopy sensors to put some anti-seize lube or something before they become one with the stem. If I didn't pay that much for the system I would have already tossed it away. Well, let me rephrase, if DW didn't know how much I paid for the system. Every time the darn thing goes off she says, "oh, for the love of Pete". I keep telling her is good to help me stay awake. I'm one of those guys that loves every gadget I can get my hands on, but this one has been more of a headache than anything. I think having to check tire pressures while the tank is filling up would be better than having to deal with this system.
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Old 06-08-2014, 05:51 PM   #11
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Quote:
Originally Posted by DGShaffer View Post
After the failure of my TST system I bought a Dual Dynamics Crossover tire balancing system. I had the same shop that cut the TST junk off my stems install it. I traded to a new coach and have since installed the same unit on this one only I did it myself
That's what I'm going to get next.
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Old 06-08-2014, 05:54 PM   #12
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Quote:
Originally Posted by Cooperhawk View Post
I bought our first set when they first came out and have been running them ever since. No problems at all and the customer service is excellent.
X2 !!
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Old 06-08-2014, 06:13 PM   #13
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I now run two repeaters with my TST system. One is plugged in to a 12v outlet that happened to be near my rear passenger wheels, and the second one is in my toad.
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Old 06-09-2014, 07:29 AM   #14
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I now run two repeaters with my TST system. One is plugged in to a 12v outlet that happened to be near my rear passenger wheels, and the second one is in my toad.
I can understand the repeaters if you have a long bus and a toad, but ours is only a 35 footer no toad.
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