ElectronicsNeed help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?
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i have a 92 rs 305, and my cruise control does not work and i would really liek it, i have no clue were to start to thry and figure out the problems cause i have never really messed with them before, any inout would be good,and yes i have checked all of my fuses
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Transducer was problem on mine. Not sure if this is the common culprit however. The vacuum assenbly is located on drivers side close to headlights. mechanical operation, hose integrity, and vacuum check would be a good start
The brake pedal switch is a common failure as well.
Also one on the clutch pedal for the T-5.
Quote:
Originally Posted by Dmans85
Transducer was problem on mine. Not sure if this is the common culprit however. The vacuum assenbly is located on drivers side close to headlights. mechanical operation, hose integrity, and vacuum check would be a good start
A failure there may also affect the HVAC system, it will cause the system to default to defrost only.
A failure there may also affect the HVAC system, it will cause the system to default to defrost only.
ok iam kinda lost like i said i have never messed wiht this crap before, and i do have a t-5, so how would i go about chekcing all of this stuff? and any clue how much it would cost to replace it, junkyards aint got any maros or birds
For the pedal switches, you can get up under the dash and see the switches at the top of the pedals. The switches are basically buttons that are released by the linkages of the pedals. Here's mine, looking up from the floorboard, the clutch has one switch on it, the brake has two - one each for the brake light and cruise release (I forget which is which)
thats kick *** man thanks for the pics ill go check that out, if that doesnt work what else shoudl i try, also is there another way to check the cruise other than driving there car caus ei just got it shipped here from germany and its not registerd and no insurence yet lol
Use this link from the sticky at the top of this forum, scroll to the last figure (Figure 62: 1992 body wiring) and the cruise is on the bottom right of the schematic. This should give you a starting point for the electrical part...
How would you know the cruise works if you haven't driven it yet lol. You must go above 25 or 30mph (I can't remember) for it to be able to engage first of all.
How would you know the cruise works if you haven't driven it yet lol. You must go above 25 or 30mph (I can't remember) for it to be able to engage first of all.
lol i shipped it to louisiana from germany, i was dirving it over there since march, and i could not get it to work over there no matter what speed i was going, also where in the dash is the light for the cruie controll?
Take a look at the photo Al posted. On the braek pedal there are two switches. The left switch is an electrical switch that powers the brake lights (may be seperate circuits for the tail brake lights and the third brake light) and the cruise control disengage switch. On the right is a vacuum swich which also disengages the cruise control. If you look very closely, you can just see the vacuum hose on the top.
If you have a manual tranny you should also have a combination electrical/vacuum switch on the clutch pedal. The electrical contact on the clutch pedal will be wired in series with the switch on the brake pedal to disengage the crusie control if either pedal is depressed. The vacuum switch will be connected in parallel with the vacuum switch on the brake pedal. This is accompolished with the vacuum hose ending on the clutch pedal, going to a TEE connection at the brake pedal. On side of the TEE will go to the vacuum switch on the brake pedal and the other side will disappear into the wiring harness, out to the engine compartment and the vacuum servo.
I have the 82 shop manual which has an on car service check routine. However the transducre was changed in 84 or 85 so the one refered to in this routine will not match yours. I also think some of the wire colors and connections changed when GM changed the transducer design. I can post it but you will have to do a little research on the link Al provided to verify wire colors, etc. Also, I expect the transducer test listed in my service manual will not apply to the transducer on your car due to the different design.
ok thanks for the info guys, now i just gotta find time to take a look at it and put m y german plates on and go for a spin, ill let yall knwo how it goes
my car is in park. my dad accidentally put the cruise control on. so i press the cruise control reset button and my cruise control surges to 7000rpm red zone . i shut it off immediately. it never did that before. my idle also went up to 1500- 2000Rpm
my car is in park. my dad accidentally put the cruise control on. so i press the cruise control reset button and my cruise control surges to 7000rpm red zone . i shut it off immediately. it never did that before. my idle also went up to 1500- 2000Rpm
KITT1983
Sorry for not responding sooner, but I have been off the board for a couple of months. The most likely cause of your problem is a failed transducer, which is feeding a full vacuum to the vacuum servo and pulling the throttle linkage to full open.
Are you familiar with the cruise control components, or do you need a few pictures?
If you know where the vacuum servo is, with the engine off, disconnect the vacuum line to it and plug the line. Now start the car and see if the high rpm problem goes away. If so the transducer is bad.
The other clue that the transducer is bad is that the cruise control has a safety feature that disables the cruise when the speed of the car is under 35-40mph. The fact that it appears to be engaging in park highlights this as the likely problem.
Sorry for not responding sooner, but I have been off the board for a couple of months. The most likely cause of your problem is a failed transducer, which is feeding a full vacuum to the vacuum servo and pulling the throttle linkage to full open.
Are you familiar with the cruise control components, or do you need a few pictures?
If you know where the vacuum servo is, with the engine off, disconnect the vacuum line to it and plug the line. Now start the car and see if the high rpm problem goes away. If so the transducer is bad.
The other clue that the transducer is bad is that the cruise control has a safety feature that disables the cruise when the speed of the car is under 35-40mph. The fact that it appears to be engaging in park highlights this as the likely problem.
No, I am not familar with anything of the cruise control system but I am learning as I go along
do you have any pictures of all the cruise control components and a guide to what their functions are?
When I start my car it idles at 2,000 RPM then goes to 1,000 RPM
after engaging drive the RPM goes down to 600 RPM idle
after looking further into the problem. my cruise control throttle cable has a kink in it. the problem of the RPM surging and high idle on cold start up was still there.
but when I disconnected the power cable to the cruise control. the high idle disappeared.
I think it is the cruise control transducer and I have to replace cruise control throttle cable.
