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Old Oct 10, 2006 | 10:41 PM
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I am a new owner of an 1989 C4...on my center dash the "service LTPWS light" keeps coming on! What does that mean?
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Old Oct 10, 2006 | 10:46 PM
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I'm going to take a guess... Low Tire Pressure Warning System You need to get a manual for your year Corvette to help with issues like these or refer to your owners manual it would be in there too.
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Old Oct 10, 2006 | 10:49 PM
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Originally Posted by RonVette2
I'm going to take a guess... Low Tire Pressure Warning System You need to get a manual for your year Corvette to help with issues like these or refer to your owners manual it would be in there too.
Only had the car a week....has new motor and still working out the other vette bugs....those blessed things! ( Bug stomper)
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Old Oct 10, 2006 | 10:49 PM
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That's what it is; the low tire pressure system is telling you that one (or more) tires have low enough air pressure to set off the warning light. Check the air pressure when the tires are cold and set them to the recommended pressure as shown on the driver's door. Probably 35 psi.

In '89, only about 7000 cars had this option.
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Old Oct 10, 2006 | 10:52 PM
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awsome thank you! I am sure glad I joined this place...it's going to help alot! I hope that I can return the favor to another newbie down the road!
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Old Oct 10, 2006 | 10:57 PM
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I didn't think that it was even a option back in 89 but that seemed like the only likely possibility to me of what it could be, and if they only had about 7000 of them in 89 then it was not that popular then, and/or sort of rare My first Corvette was an 89 too, a 6 speed with the FX3 option as well, both of which were rare too, the first year a 6 speed was offered in the Corvette.
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Old Oct 10, 2006 | 11:02 PM
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Originally Posted by c4cruiser
That's what it is; the low tire pressure system is telling you that one (or more) tires have low enough air pressure to set off the warning light. Check the air pressure when the tires are cold and set them to the recommended pressure as shown on the driver's door. Probably 35 psi.
If it's the Service LTPWS light then it's most likely not a low tire. There's a separate light for that. It's usually one of the transmitters, or recievers gone bad. IMHO it's more trouble/money than it's worth to fix. I just pulled out my service ltpws light and left it alone.
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Old Oct 10, 2006 | 11:04 PM
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That is probably a good idea. As long as you look at your tires regularly and check the pressure occassionally too.
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Old Oct 10, 2006 | 11:05 PM
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Mine is a plain ole automatic. I need to find out more about the dash. my tac does not seem to work it's all lit up,,kind of like the lights are on but no body is home.
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Old Oct 11, 2006 | 12:43 AM
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Originally Posted by RonVette2
I didn't think that it was even a option back in 89 .
Man, you learn somthin' new everyday. How smart are they? Do the sensors know if the wheels have been rotated? Do they have to be pulled from the wheels if a rotation is done to maintain thier assigned positions? Can they be reset? Is 89' the first year? My STS has em' but it's an 01'.
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Old Oct 11, 2006 | 08:21 AM
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Originally Posted by nremd_911
Mine is a plain ole automatic. I need to find out more about the dash. my tac does not seem to work it's all lit up,,kind of like the lights are on but no body is home.
For the tachometer problem, run a test on the tach filter. It's connected to the white wire that connects to the distrubitor cap.
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Old Oct 11, 2006 | 08:34 AM
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Default Ltpws

You can rotate the tires and the sensors will still work correctly. The SERVICE light should indicate as previously noted that one of the sensors is not transmitting. The 93 did not offer wheel per wheel info, only that one of the tires was low. Good Year recently broke the band on one of mine that holds the sensor. It's a long radiator hose clamp type device that is 50 to 55 inches long. I contacted the company that made them originally and they are not available. If you decide to eliminate them I would sure love to have one strap.
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Old Oct 11, 2006 | 08:39 AM
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93RUBYAN,
Would a long plastic tie strap work in place of the metal band? I've seen those in very long lengths.
-Chris
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Old Oct 11, 2006 | 09:58 AM
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Default Sensor Strap

50 to 55 inches is pretty lengthy. I have thought about a piece of stainless to overlap the break and install a couple of pop rivets. The strap actually has two tabs that hold onto the sensor to keep it from sliding on the strap. I'm not sure if the plastic tie wraps will pull up tight enough or if over a period of time the heat may let them loosen and slip. Could sure be worth a try.

Thanks for the feed back!
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Old Oct 11, 2006 | 11:06 AM
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Originally Posted by RonVette2
I didn't think that it was even a option back in 89 but that seemed like the only likely possibility to me of what it could be, and if they only had about 7000 of them in 89 then it was not that popular then, and/or sort of rare My first Corvette was an 89 too, a 6 speed with the FX3 option as well, both of which were rare too, the first year a 6 speed was offered in the Corvette.
RPO UJ6. They started in 87 with about 46 of them sold, but they pulled them from the option list due to false signal issues apparently. Then it returned in 89.
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Old Oct 11, 2006 | 11:25 AM
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ok I'm confused,,,as long as the tire pressure is ok then I should be fine? and if it becomes an anoying problem then I can just pull the lamp from the dash as to not look at the light?
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Old Oct 11, 2006 | 11:28 AM
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Originally Posted by nremd_911
ok I'm confused,,,as long as the tire pressure is ok then I should be fine? and if it becomes an anoying problem then I can just pull the lamp from the dash as to not look at the light?
that would be the easy way out of it.
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Old Oct 11, 2006 | 12:04 PM
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Originally Posted by RonVette2
You need to get a manual for your year Corvette to help with issues like these or refer to your owners manual it would be in there too.


You can buy both a Service Manual and an Owner's Manual for your year from Helm, Inc.
The SM won't be cheap. The OM will be.

Larry
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