My speedometer died now, this is an electronic one, and has anyone been in touch with this before? -90 Thema Turbo16V
Martin
Speedometer
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Leo Capaldi
Re: Speedometer
Hi,
My experience with Deltas, Prismas and Themas is that it is the sender unit at the gearbox which fails. They usually become intermittant then die.
Leo
My experience with Deltas, Prismas and Themas is that it is the sender unit at the gearbox which fails. They usually become intermittant then die.
Leo
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Brian Hilton
Re: Speedometer
I would go along with Leo's answer fairly common fault on Dedra as well.
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Villads Bønding
Re: Speedometer
This is a wery common problem on Themas. The fault can be in the gearbox sensor or in the dashboard. Someone also told me that the problem can be due to a stuck km counter! I dont know if that is true. A gearbox sensor will set you 70 pounds back and a used dashboard (yes you probably have to get a hole dashboard) will cost 90 pounds (a least in Denmark, expensive country!). God luck!
Villads Bønding
Villads Bønding
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Karl Hansell
Re: Speedometer
Another possible fault could be the famous Thema instrument-panel grounding problem.
I belive that the spedometer is the first instrument that will stop working due to the grounding problem.
It is easy to determine if you have a grounding problem, just closly watch th volage meter as you turn on the turning indicators. If the voltagemeter starts to dip you have a grounding problem.
A good garage can measure the output of the sending unit, to determine if it is working corectly.
(I actualy lost my speedometer due to a problem with the connector between the sending unit and the instrument-panel, a mechanic had pulled a bit on the cable and one of the metal pieces in the connector had moved causning an intermittent speedometer loss.)
I belive that the spedometer is the first instrument that will stop working due to the grounding problem.
It is easy to determine if you have a grounding problem, just closly watch th volage meter as you turn on the turning indicators. If the voltagemeter starts to dip you have a grounding problem.
A good garage can measure the output of the sending unit, to determine if it is working corectly.
(I actualy lost my speedometer due to a problem with the connector between the sending unit and the instrument-panel, a mechanic had pulled a bit on the cable and one of the metal pieces in the connector had moved causning an intermittent speedometer loss.)
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paul
Re: Speedometer
I had this problem which took me two years to find!
I changed the gear box sendor no luck,
the reciever p.c.b board on the back of the instrument panel,
and the speedometer its self. I also checked all the wiring from the sender to the reciever, still no luck until I noticed a electronic component called a diode in between the two layers of the copper track on the back of the instrument panel, this had gone open circuit!!!
At last with it fixed i finally knew why i kept getting speeding tickets
Good luck
I changed the gear box sendor no luck,
the reciever p.c.b board on the back of the instrument panel,
and the speedometer its self. I also checked all the wiring from the sender to the reciever, still no luck until I noticed a electronic component called a diode in between the two layers of the copper track on the back of the instrument panel, this had gone open circuit!!!
At last with it fixed i finally knew why i kept getting speeding tickets
Good luck