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Re: speedo doesnt work
Speedometer Cable REMOVAL & INSTALLATION
Reach behind the speedometer and depress the retaining clip. Pull the cable from the casing. If the cable is broken, raise the car and disconnect the cable at the transmission. Lubricate only the bottom 3⁄4 of the cable core with speedometer cable lubricant. Reconnect all parts.
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suggest checking cable on accelerator throttle arm in engine bay where it connects from cruise control to accelerator throttle arm on engine. Thinking if it is loose it may get looser when hot.
Check connectors on electronics in engine bay on cruise control.
Check sensor for speed. Is it ignition maybe a scotch lock connector that expands with heat and cruise control looses sensor for igition pulses. How does it sense speed ?
Is it magnets on the drive shaft maybe the Hall efect transducer is close to exhaust pipe under car and is being affected by heat.
Is it front wheel drive ? check for a pulse sender on speedo cable in engine bay maybe this is getting cold.
Check cruise control cable is oiled adequately in cable sleeve .
Check cruise control cable under hood is tight enough to pull throttle arm.
Check brake pedal . see if wires to cruise control are still attached to switch on brake pedal.
Check magnets are still on drive shaft if rear wheel drive.
Check hall effect transducer is still in place to dedect magnets spinning on drive shaft.
Check Vacuum tubing is ok on cruise control it pulls the cable in and out .
Check if ignition sensing that wire is connected that senses ignition pulses ( front wheel Drive)
Check if a speed sender device is used on speedo cable to create pulse (front wheel drive ) sometimes used to sense speed on some cruise controls.
Check wiring around plugs and sockets under bonnet.
Try from Servo control follow connection To I beleive Transmission casing . Look for Burnt wiring / frayed / damaged ...Cruise should maintain speed signal Like speedo cable . Computor management black box / ECM may have direct control so Look for engine bay fuse boxes = 2 under hood . More fuses ++ relays 2 check inside cover is diagram of size + what it controls . A Reset 2 ecm may help by disconnecting Battery - Let sit 30 mins.. Older models + 4 wheel drive Trans has Gear wheel of plastic 2 count revolutions as speedo cable does . If said wheel teeth have worn out then Cruise counts incorrect or fails 2 activate . If you replaced brake pedal Light activation switch then be sure brake Tail lights DO work if not the cruise will fail as brake pedal is part of safety feature to turn it off in emergency disconnect . The signal light Stalk that Turns off L / R signals is Common Item 2 wear out BUT it also controls Turning on cruise or setting ...IF you have Steering wheel on / off / setting control - then issue can be frayed / cut wires due 2 steering wheel movement ....solutions remove wheel BUT 1 st disconnect Air Bag Fuse then wheel and search connections .....Good Luck ...
most old cars have a speedo cable.
is the odometer dead too. (we need that answer now)
there are 3 class evolutionary systems.
electric sender to cluster
and sender to PCM and PCM drives cluster.
but honda does this on diffr, dates than most cars. (i learned)
so lets do that. we login to alldata.com and look , so can you at any time,
once a month i do random cars.
what engine, sometimes this varies by engine, and trans.
neither stated so Ill toss coin each time.
has electronic (hall) speed sensor VSS and runs
engine, cruise. odometer and cluster.
the 96 has no speedo cable, and works in modern mode, very advance for this time
also any scan tool on earth fits the PCM scan port
and if VSS is dead, it tells you that with a DTC , vss dead.
saving all that work wondering why it dont work.
PCM must see it work
if only cluster fails, and both speedo and odometer then its bad.
if only speedo fails but not odometer , then speedo meter is bad.
its that easy.
Your question is vague so I do not know if I can help you.
Try checking the cable that comes from the cruise control and mechanically pulls on the accelerator linkage under the car bonnet. It should be clamped firmly to the accelerator cable and the chain link to the throttle has to be tight if it is loose the cable can't move the throtle.
This was the cause of my cruise control not working as the clamps were loose and the cable moved rather than the throttle. Check the brake switch has the cruise control sensor wire connected securely.
Is the car rear wheel drive if so check magnets are still on the drive shaft and that the hall effect transducer if mounted close to the magnets to detect the movement of the magnets. Front wheel drive may use a transducer connected to the speedo cable or may use ignition pulse sensing if these connections fail the cruise control will stop working also. Also make sure the vacuum connection is ok to the cars vacuum piping under the bonnet.
The cable was probably not reattached to the throttle body, or the wiring for the cruise module was not plugged back in. The VW/Audi cruise control system does not use engine vacuum, it uses it's own vacuum pump. Vacuum runs from the pump/control module to the vacuum reservoir that pulls on the throttle cable. The is also another vacuum line that runs to the brake pedal, which is a safety feature (press the brake pedal and the vacuum to the vacuum reservoir is instantly cut, releasing the throttle and disengaging the cruise control.)