As long as you did not cut any of the cruise wiring out of your harness or remove any of it this is pretty easy stuff.
Your speedometer works, right? Hopefully you used your KA lower harness to get everything working. This is very important.
Let me start this by saying, I do NOT have the small bugs worked out yet but am going to get them ironed out. The speed control is not the greatest, it does surge alot. This may be specific to my car because of a few reasons.
I used a cruise pulley from a pathfinder, its outer dia. is signifigantly larger than the one for the throttle. because of increased required pull distance of the cable to change speed.
The cruise cable is definitely bent, could be causing friction.
My speed sensor is not the correct unit, so I recalibrated my speedometer. This speedo sensor I used tricked the KA speedo into reading super high (like almost double). This makes cruise think I am really hauling butt, but I am not. The other problem that has left me with is the cruise will not engage over 50mph because the speed sensor thinks I am going very fast. I am going to swap in the right sensor, recalibrate the speedo, and see if that does the trick there.
Anyway, when I did my wiring harness I left every cruise wire intact. If you did not, get out your manual!
I used a pulley off of a pathfinder, with a little modifying it fit right onto the RB throttle body. This DID involve a couple tack welds and a dremel.
Thats it though, I just hooked up the cable and it worked. Wierd. I figured something much more sinister was going to be required.
I am at my parents house, but will post pictures of what I did when I get back home!
Evan
My cruise now works, rb25det in S14.
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kouki-gymkhana
- Posts: 624
- Joined: Sat Aug 16, 2003 11:54 am
- Car: 1993 Nissan 240SX (only 90,000 mi!)
Re: My cruise now works, rb25det in S14. (240z4u)
Awesome work, Evan!! I knew that it wouldn't require wicked amounts of wiring because from looking through the FSM, the cruise system is pretty much separate from the ECU. I couldn't get mine to work on my s13 because my speedo wasn't working correctly after the swap. I've since swapped in an LSAuto speedo but haven't tried it out yet because I haven't put the head back on the engine yet. Once it's all buttoned up, everything on my car **should** work. I'll keep you posted. Excellent work again, BTW!!
Re: (Carl H)
Carl, I may try the KA throttle body. I used the RB one just because I did not want to mess with a TPS and I did not have a new gasket.
Re: (240z4u)
Another shot
Re: (240z4u)
Carl, I have a buddy who never uses cruise either. My problem is that I cannot get comfortable in my car for long trips (4hr or longer), and I find myself speeding if I do not use cruise.
Thanks for the feedback.
Thanks for the feedback.
Re: (240z4u)
Here is the lowdown on the throttle body mod.
First take off the nut that secures the throttle pulley in place. There is a nut/washer/bronze bushing that you need to pull off and set aside.
IF you look at the second picture this makes more sense. I will do all describing from the angle the picture was taken at.
When you look at the pathfinder pulley there is a hole in it, and nothing to make it rotate on the throttle shaft. On the pathfinder there is a little washer shaped like a comma with an almost rectangular hole in it. There is a 3/8 inch or so stub that hangs off one side of the pathfinder pulley and the other side is flat. If you slide it onto the RB throttle body like this it presses the stock throttle pulley and the pathfinder pulley together.
Push the nylon bushing out of the pathfinder pulley, keep this.
With a dremel, cut the part that sticks off the right side of the pulley in half. Cut the bushing in half to fit.
Take the piece you cut off, with the bushing inside of it and put it on the throttle shaft as a spacer.
The comma shaped part and the throttle pulley will need to be welded together. Mock up the keyed comma shaped part on the right side of the pathfinder pulley so it is clocked like you want it. Mark it, take it off and tack weld them together.
Press in the nylon bushing you removed, slide onto the throttle shaft, and resecure with the nut/washer you took off in the beginning.
Done and Done.
Likely there is a simpler pulley to use that avoids welding, but this is what I had at my disposal. I am going to try doing this with a KA pulley and see if it works a bit better.
Evan
Sorry my description sucks, its pretty self explanatory and when I do stuff like this I usually do not take pictures/notes or anything.
First take off the nut that secures the throttle pulley in place. There is a nut/washer/bronze bushing that you need to pull off and set aside.
IF you look at the second picture this makes more sense. I will do all describing from the angle the picture was taken at.
When you look at the pathfinder pulley there is a hole in it, and nothing to make it rotate on the throttle shaft. On the pathfinder there is a little washer shaped like a comma with an almost rectangular hole in it. There is a 3/8 inch or so stub that hangs off one side of the pathfinder pulley and the other side is flat. If you slide it onto the RB throttle body like this it presses the stock throttle pulley and the pathfinder pulley together.
Push the nylon bushing out of the pathfinder pulley, keep this.
With a dremel, cut the part that sticks off the right side of the pulley in half. Cut the bushing in half to fit.
Take the piece you cut off, with the bushing inside of it and put it on the throttle shaft as a spacer.
The comma shaped part and the throttle pulley will need to be welded together. Mock up the keyed comma shaped part on the right side of the pathfinder pulley so it is clocked like you want it. Mark it, take it off and tack weld them together.
Press in the nylon bushing you removed, slide onto the throttle shaft, and resecure with the nut/washer you took off in the beginning.
Done and Done.
Likely there is a simpler pulley to use that avoids welding, but this is what I had at my disposal. I am going to try doing this with a KA pulley and see if it works a bit better.
Evan
Sorry my description sucks, its pretty self explanatory and when I do stuff like this I usually do not take pictures/notes or anything.