1989 ltpws
Team Owner
Joined: Sep 2003
Posts: 25,377
Likes: 2,735
Sensors haven't been available new for quite some time. There seems to be used available. They are location "specific"!
I have 1 NOS but I don't recall the position. If you have a "light" you need to do some diagnostics to determine the "fault". You will need patience and a FSM for diagnostics.
I have 1 NOS but I don't recall the position. If you have a "light" you need to do some diagnostics to determine the "fault". You will need patience and a FSM for diagnostics.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Contractor was belly up before the production run ended and there's never been any parts; including warranty back in the day.
There is a little you can do to diagnose the system. Service Manual says to jack it up and take an air hammer to each wheel and if the vibration sets off the light, replace the sensor. If you have a light on all the time, it's usually the Receiver. They aren't well shielded and can pickup electrical noise from the car next to you at a traffic light.
There are 4 unique (color coded) sensors which originally were wheel specific and the Owner's Manual said you couldn't move them; or rotate the tires without dismounting each tire. A Service Bulletin was subseqently issued stating that as long as you had one of each sensor, it didn't matter which wheel it went on - which made sense since the Receiver just isn't that sophisticated - it simply looks for a signal, at startup (25 mph with the ignition in the Run Position) from each sensor.
There is a little you can do to diagnose the system. Service Manual says to jack it up and take an air hammer to each wheel and if the vibration sets off the light, replace the sensor. If you have a light on all the time, it's usually the Receiver. They aren't well shielded and can pickup electrical noise from the car next to you at a traffic light.
There are 4 unique (color coded) sensors which originally were wheel specific and the Owner's Manual said you couldn't move them; or rotate the tires without dismounting each tire. A Service Bulletin was subseqently issued stating that as long as you had one of each sensor, it didn't matter which wheel it went on - which made sense since the Receiver just isn't that sophisticated - it simply looks for a signal, at startup (25 mph with the ignition in the Run Position) from each sensor.
Team Owner
Joined: Sep 2003
Posts: 25,377
Likes: 2,735
Contractor was belly up before the production run ended and there's never been any parts; including warranty back in the day.
There is a little you can do to diagnose the system. Service Manual says to jack it up and take an air hammer to each wheel and if the vibration sets off the light, replace the sensor. If you have a light on all the time, it's usually the Receiver. They aren't well shielded and can pickup electrical noise from the car next to you at a traffic light.
There are 4 unique (color coded) sensors which originally were wheel specific and the Owner's Manual said you couldn't move them; or rotate the tires without dismounting each tire. A Service Bulletin was subseqently issued stating that as long as you had one of each sensor, it didn't matter which wheel it went on - which made sense since the Receiver just isn't that sophisticated - it simply looks for a signal, at startup (25 mph with the ignition in the Run Position) from each sensor.
There is a little you can do to diagnose the system. Service Manual says to jack it up and take an air hammer to each wheel and if the vibration sets off the light, replace the sensor. If you have a light on all the time, it's usually the Receiver. They aren't well shielded and can pickup electrical noise from the car next to you at a traffic light.
There are 4 unique (color coded) sensors which originally were wheel specific and the Owner's Manual said you couldn't move them; or rotate the tires without dismounting each tire. A Service Bulletin was subseqently issued stating that as long as you had one of each sensor, it didn't matter which wheel it went on - which made sense since the Receiver just isn't that sophisticated - it simply looks for a signal, at startup (25 mph with the ignition in the Run Position) from each sensor.
1-Low tire pressure 2-Service LTPWS
His is an '89MY and I don't know for a fact but a '90MY is a 2 bulb test.
Yes they're not well shielded. A friend had a '90MY that every time he passed a highway maintenance facility near him the system was set off.
THE OP needs a FSM for this car. He's got several questions that are most easily researched if a FSM is in hand and you've reasonable intelligence.
Thread Starter
Advanced
Joined: Nov 2008
Posts: 84
Likes: 0
From: Buna Texas
the LTWPS and service does not come on all the time. some times it comes on at a speed over 30 other times you can be doing 70 an it will not come on untill you hit a bump. I feel like it it is in the front passnger side tire. would like to keep the system. but of course in working order. wanted to know where I could find NOS or service replacments for the system.
Team Owner
Joined: Sep 2003
Posts: 25,377
Likes: 2,735
the LTWPS and service does not come on all the time. some times it comes on at a speed over 30 other times you can be doing 70 an it will not come on untill you hit a bump. I feel like it it is in the front passnger side tire. would like to keep the system. but of course in working order. wanted to know where I could find NOS or service replacments for the system.
