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What would cause the speedometer needle not to work when the headlights are on?
Wiki User
∙ 17y ago
If it's an electronic (analog) speedometer needle, you probably have a problem with the dasboard grounding.
Wiki User
∙ 17y ago
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What could cause the ABS light to come on and the speedometer needle to bounce intermittantly on a 1996 E350 7.5L gas?
I would suspect a faulty VSS. Try replacing the vehicle speed sensor in the transmission.
What would cause the speedometer and odometer to fail in a '97 Saturn S12?
sounds like a broken speedometer cable.
When the headlights are on there are no brakelights when headlights are off brakelights work what would cause this?
Bad ground on the brake lite circuit.
What else can be wrong with spastic speedometer needle on a 1996 Ford Escort station wagon the speedometer cable and cluster have been replaced and the speedometer still doesnt work?
So the speed gauge in the dash and the speedometer cable have been replaced. Well, the only thing left to my knowledge would be the geared speed sensor in the transaxle. I have the same problem. Replaced the speedometer cable but to no avail. I then took the speedometer out and used an electric motor to drive it on my bench and noticed that the part that is driving the needle (driven by a magnet) starts vibrating at certain speeds. On further investigation I found that the bush on the panel that the spindle goes through ( just behind the needle) is worn and hence the spindle/shaft does not run tight and starts vibrating/rattling and then it sometimes swing up and down. When I lightly touch the needle it stabilizes for a while and then starts vibrating again. The needle is not driven directly, but through a magnetic coupling so the slightest interference can cause problems. It seems the only solution is to replace the speedometer. Unfortunately you have to replace the whole cluster. I thought I could do something about the bush, but it is too delicate and you will have to remove the little coil spring which means the speedometer will have to be re-calibrated.
What kind of speed does a speedometer show in a vehicle?
Acceleration is not represented on a speedometer, however, when you look at the speedo, if the needle is moving, you can get a rough idea of acceleration like this: If the needle is going clockwise (of generally indicating faster speeds) - you are accelerating. If the needle is going anticlockwise - you are decelerating. Speedometers measure speed. You would need an accelerometer to measure acceleration.
What would cause the speedometer to not work and the odometer to work on a 1999 Mercury Cougar?
The gears in the speedometer are stripped. If the odometer is working then you have input.
What would cause a 1994 Chrysler lhs not to shift out of first gear and the speedometer is not working?
TCM Malfunction, And/Or Speedometer Sensor Malfunction.
What would cause headlights dashlights to dim then brighten again?
Alternator
What would cause the digital dash lights such as the speedometer and all the gauge readings not to display at times on a 1985 New Yorker 2.6 Ltr?
When they are not displayed - check to see if the headlights are on - they are designed to dim and perhaps the dimmer control just needs to be adjusted
What would cause the speedometer on a 1996 dodge neon not to work?
i would have to bet on the speed sensor
What would cause your brake lights to not come on with the headlights on If the headlights are off the brake lights are fine?
Possible ground issue at the taillights.
Would a faulty alternator in a 1999 Malibu cause the rpm needle to move when your stopped and your dash and headlights to dim in and out?
YES ! ! ! next you know you will be stranded trying to get a jumper it doesnt work until you replace either alternator and battery[both].
