I sent in my TB to SOS to be bored out. I just installed the TB and now the car idles up and down and the check engine light is on. The car is idling between 1000-1300 RPMS up and down real fast. I also noticed after this happened, I looked in the box that SOS sent me and I have 3 different foam gaskets. Does anyone know what these are for? This may be an easy issue but I am not very mechanical.
BBTB install problems
- Thread starter martini-1
- Start date
High and hunting idle is caused by a vacuum leak. Find the leak and fix the leak and you should be good to go.
tested for a a leak and we cannot find any leak at all. Also, when I unplug the top electrical connector, it doesn't make the car idle any different. We unplugged it just to see what would happen. Is this any idication of anything? Also, when the car is idling, and I try to rev up, it stops at 4000 RPM like it has a rev limiter. Any suggestions?
Yes you do have a vacuum leak or the throttle plate is not closing completely. Do you have full movement of the throttle plate.
I just recently had that installed on my NSX and I had that same exact problem. I'm guessing you have a later model NSX equipped with the electronic throttle body. It's not a leak in your vacuum lines that you're experiencing, but rather the electronic throttle mechanism that is "out of sync", which cause the butterfly plate to open and close. To solve this simply:
1) Loosen, but DON'T REMOVE the four tamper-proof torx bit screws at the side of the TB. (You can't miss it, it covers the electronic throttle mechanism. It does require a special tool, since those screws are not commmon and they are tamper-proof.)
2) Install the TB as you normally would.
3) Start the car and let it idle until the vehicle is warm/normal operating temp.
4) Rotate the cover that covers the electronic throttle mechanism. (Once the TB is installed and you're facing/looking at the TB, it should be able to rotate towards you or away from you. If you're not able to rotate that cover, you didn't loosen the screws enough.)
5) Once you're able to rotate that cover, you can hear the RPM's acting normal again. But if you rotate it to opposite direction, your RPM's will start to "hunt" again. Which is fine, because that means you're on the right track. Basically, you'll pretty much rotate that cover until the "hunting" goes away. Rotate a little at a time, let it sit there for a few seconds before rotating it again.
6) Once the "hunting" goes away, you need to make sure your car is idling like normal, keep an eye on your RPM's, it should be around 800 to 900 RPM's. If it's more than that, you either rotated the cover too much or not enough.
7) Once the "hunting" is gone and the idle is normal, tighten those four screws back. It'll be hard, since there's not alot of room there, but at least tighten one, so that it won't loose its place.
8) Turn the car off and remove the key. Remove the "clock" fuse for one minute to reset the ECU. Replace the fuse and start the car again.
9) If you did everything correctly, the "hunting" is gone and engine light is off. Let the car sit and idle until warm and make sure it's idling normally. If everything is fine, you're all done and go for a test drive.
Let me know if you have any problems. I'm sure you'll love the new sound and the better throttle response. I know I do. :smile:
1) Loosen, but DON'T REMOVE the four tamper-proof torx bit screws at the side of the TB. (You can't miss it, it covers the electronic throttle mechanism. It does require a special tool, since those screws are not commmon and they are tamper-proof.)
2) Install the TB as you normally would.
3) Start the car and let it idle until the vehicle is warm/normal operating temp.
4) Rotate the cover that covers the electronic throttle mechanism. (Once the TB is installed and you're facing/looking at the TB, it should be able to rotate towards you or away from you. If you're not able to rotate that cover, you didn't loosen the screws enough.)
5) Once you're able to rotate that cover, you can hear the RPM's acting normal again. But if you rotate it to opposite direction, your RPM's will start to "hunt" again. Which is fine, because that means you're on the right track. Basically, you'll pretty much rotate that cover until the "hunting" goes away. Rotate a little at a time, let it sit there for a few seconds before rotating it again.
6) Once the "hunting" goes away, you need to make sure your car is idling like normal, keep an eye on your RPM's, it should be around 800 to 900 RPM's. If it's more than that, you either rotated the cover too much or not enough.
7) Once the "hunting" is gone and the idle is normal, tighten those four screws back. It'll be hard, since there's not alot of room there, but at least tighten one, so that it won't loose its place.
8) Turn the car off and remove the key. Remove the "clock" fuse for one minute to reset the ECU. Replace the fuse and start the car again.
9) If you did everything correctly, the "hunting" is gone and engine light is off. Let the car sit and idle until warm and make sure it's idling normally. If everything is fine, you're all done and go for a test drive.
Let me know if you have any problems. I'm sure you'll love the new sound and the better throttle response. I know I do. :smile:
phone Chris, he sold it to ya!!!
Trev
Trev
mr_na2&ap1-thanks for the input. Hopefully your solution will work for me. I will let you know. I REALLY appreciate the help.
Trev- I tried to call SOS a couple of time but they didn't answer their phone. i did get an email back fro Bryan saying that Chris could help but he is out for a couple of days.
Trev- I tried to call SOS a couple of time but they didn't answer their phone. i did get an email back fro Bryan saying that Chris could help but he is out for a couple of days.
mr_na2&ap1,
This is quite helpful and great information. This should become part of the installation notes for the BBTB.
Thanks,
LarryB
I'm glad I was able help. Just let me know how it turns out.
I agree! But let's wait for Martini-1's reply and see if it all works out, then we'll celebrate. :biggrin:
mr_na2&ap1- I' trying to rotate cover as we speak. It looks there is so little room for movement. I did find out one problem, I sent me TB to a local company to be powdercoated but they said they couldn't do it after having it a few days. I then tried to install it and now I have problems. I called and asked the powder coater if they tried to take apart the TB and the manager said that one guy removed the 4 toque screws on the TB and took it apart but then put it back together. I'm assuming this is a problem? LEt me know what you think my next step should be.
-Troy
-Troy
mr_na2&ap1- I also noticed the RPM's going down when I rotate the cover but I can't get the RPM's lower than 1300. I do get the "hunting" to go away but still can't get the RPM's low enough or the check engine light to go off and run properly. Maybe I'm in over my head??? It doesn't seem like it should be too tough but Im just not getting it to run correctly.
Sounds like you are in way over your head and the powder coater did not do you any favors. Sounds like it is time to send the car in for service. You do have ZIMBRICK ACURA in Madison but ACURA of BROOKFIELD on the west side of Milwaukee would be a better choice with their reputation and the amount of NSX's they work on.
Troy - It's true that there's not alot of room for that cover to be rotated. But then again, it doesn't take alot of movement in order for the T/B to "sync". I'm guessing the problem you're having is caused by the powder-coater when he was dismantling the T/B. I would suggest in trying to match up the old, original markings prior to the T/B being taken apart for powder-coating. If that doesn't work, try removing the cover completely and do a full turn or, remove the screws and see if you can rotate it a turn. But mark where you have started and write down many turns you're turned, from left to right or right to left. Or, just have the T/B installed in your car and try to turn it while the car is running to speed to process. It's going to be pretty much a guessing game from here on out, so take your time and don't rush it. Since the bottom of that cover is squared, I'm guessing when they took it apart, they didn't match it up correctly. Worse case is, you'll just end up removing that cover four times and installing the T/B four more times to solve your problems. Hope that helps, let me know how it turns out.
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mr_na2&ap1-Thanks again for all the helpful info. The information you can get on this site is incredible. Anyway, I am in Cali for the week and will try what you wrote when I get back this weekend. Taking the TB off isn't any issue anymore, I have done it enough times already that it seems easy. The only question I have still is about idle. My service advisor called me and told me that the idle is electronically temp controlled and it should be idling between 800-900 RPM's even though it is "hunting"
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