Walk me through adjusting my TB (monoblade)
05-04-2009, 01:37 PM
#1
Walk me through adjusting my TB (monoblade) I just fired up my TA last night for the first time since I built the LE2 355 with a bunch of other goodies. It wouldn't stay running unless I feathered the gas pedal to keep the idle up. Can someone either walk me through what needs to be done to get it to run by itself? I know a few things to try but I don't know if there's a specific order in which to try them like the little screw that will open the throttle body blade (monoblade) but then what? Thanks guys I'm hoping to have everything finished up and driving the car by the end of the weekend so I'm trying to do as much as I can during the week.
Zach
Zach
05-04-2009, 01:45 PM
#2
I just fired up my TA last night for the first time since I built the LE2 355 with a bunch of other goodies. It wouldn't stay running unless I feathered the gas pedal to keep the idle up. Can someone either walk me through what needs to be done to get it to run by itself? I know a few things to try but I don't know if there's a specific order in which to try them like the little screw that will open the throttle body blade (monoblade) but then what? Thanks guys I'm hoping to have everything finished up and driving the car by the end of the weekend so I'm trying to do as much as I can during the week.
Zach
Zach
05-04-2009, 02:04 PM
#3
Ok I did adjust the screw some to keep it running but I don't know what is supposed to be done to keep it running without adjusting the screw? I've heard people talk about the IAC drill mod but I don't really know what that consists of and I've also heard of people adjusting the IAC. Another thing I've never done.
05-04-2009, 02:06 PM
#4
Ok I did adjust the screw some to keep it running but I don't know what is supposed to be done to keep it running without adjusting the screw? I've heard people talk about the IAC drill mod but I don't really know what that consists of and I've also heard of people adjusting the IAC. Another thing I've never done.
05-04-2009, 02:53 PM
#6
You'll need a tune first + you'll need to set up the idle on the throttle body. You need to make sure TPS is in an appropriate range and also that the IAC is in a range where it can catch and hold the idle.
http://www.pcmforless.com/images/dat...m#Idle%20Setup
http://www.pcmforless.com/images/dat...m#Idle%20Setup
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05-04-2009, 09:18 PM
#11
Yeah I kind of expected to have some issues because of the monoblade and the cam size and what not. So at least I knew what I was getting into. I know the datamaster would help so I may look into that. I know about the drill mod but I really don't want to drill into my TB.
05-05-2009, 11:37 AM
#13
Yeah I kind of expected to have some issues because of the monoblade and the cam size and what not. So at least I knew what I was getting into. I know the datamaster would help so I may look into that. I know about the drill mod but I really don't want to drill into my TB.
Also it wouldn't hurt to check for vacuum leaks.
05-05-2009, 12:03 PM
#14
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Don't do the drill mod. You don't have to on these TB's.
Did you get instructions with the monoblade? I have one and they say to elongate the TPS mounting holes and rotate it until you get a certain voltage. I would do that because a sensor is cheap to replace if something happens. Also they tell you how to reset the IAC so it's back to zero. If you want more info on this I can read off the instructions.
Did you get instructions with the monoblade? I have one and they say to elongate the TPS mounting holes and rotate it until you get a certain voltage. I would do that because a sensor is cheap to replace if something happens. Also they tell you how to reset the IAC so it's back to zero. If you want more info on this I can read off the instructions.
05-05-2009, 12:27 PM
#15
Don't do the drill mod. You don't have to on these TB's.
Did you get instructions with the monoblade? I have one and they say to elongate the TPS mounting holes and rotate it until you get a certain voltage. I would do that because a sensor is cheap to replace if something happens. Also they tell you how to reset the IAC so it's back to zero. If you want more info on this I can read off the instructions.
Did you get instructions with the monoblade? I have one and they say to elongate the TPS mounting holes and rotate it until you get a certain voltage. I would do that because a sensor is cheap to replace if something happens. Also they tell you how to reset the IAC so it's back to zero. If you want more info on this I can read off the instructions.
05-05-2009, 12:59 PM
#16
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For the IAC, adjust the idle screw until 30-40 counts (shows you on a scanner) at idle. If you need to reset it, press the gas pedal slightly, start and run the engine for 5 seconds, then ignition off for 10 seconds.
It says to check voltage at terminals A and B and rotate the TPS until about 0.54volts.
It says to check voltage at terminals A and B and rotate the TPS until about 0.54volts.
05-05-2009, 04:58 PM
#17
Ok I got off the phone with Bryan at pcmforless and he told me that with the size cam I'm running I will have to manually adjust it. Because it's a bigger cam he said that the motor will need alot more air to hold idle. So basically he told me to adjust the throttle screw and then make sure the TPS and IAC are where they need to be. The other option is drilling a hole in the blade but I refuse to do that. He said that the tune itself will not keep the car running if there's not enough air getting in.
05-05-2009, 05:06 PM
#19
You may have to move the throttle plate via the screw, wont hurt a thing. Just make sure you correct the tps voltage.
Also exhaust leaks and split blm's or blm's that are off will make it hard for the IAC motor to do its job.
Mine idles fine, yes it is cracked open with the screw.
Also exhaust leaks and split blm's or blm's that are off will make it hard for the IAC motor to do its job.
Mine idles fine, yes it is cracked open with the screw.