OK guys, please bear with me as I have just bought all my chip burning hardware from Moates and have had some success with burning them. I am still very new and do not understand alot of what you all talk about on here but I was hoping for some help. I am an off roader and dont really belong on here but you guys seem to know more about this stuff than anyone.
I have put a 1990 350 TBI with only a TBI spacer plate an Accel ignition in a Jeep I am building. I need to raise the in gear idle but all I found in Tuner Pro was the Target Idle vs. Coolant temp. If I raise the rpm in that sequence, it does get my in gear idle up but when idling in gear it starts to dump fuel trying to get the idle back up to the setting I put in. For example, I raise the values in their to 800 rpm idle so that when in gear it will come down to 600, well it will idle at 800 until you put it in gear and then the rpm comes down to the 600 rpm I want but after a few seconds it starts dumping fuel trying to raise the rpm to that setting of 800.
I have set the timing 4 different times, adjusted the TPS sensor, took out the plug for the idle screw and reset the IAC trying to get it to idle correctly. How can I get the RPM up so that in gear it will come down to where it needs to be? It seems if I raise the RPM by the adjusting screw or TPS, the computer will just make changes until it gets it back to the setting in the computer. I cannot find anywhere on Tuner Pro to just set the idle up.
I have put a 1990 350 TBI with only a TBI spacer plate an Accel ignition in a Jeep I am building. I need to raise the in gear idle but all I found in Tuner Pro was the Target Idle vs. Coolant temp. If I raise the rpm in that sequence, it does get my in gear idle up but when idling in gear it starts to dump fuel trying to get the idle back up to the setting I put in. For example, I raise the values in their to 800 rpm idle so that when in gear it will come down to 600, well it will idle at 800 until you put it in gear and then the rpm comes down to the 600 rpm I want but after a few seconds it starts dumping fuel trying to raise the rpm to that setting of 800.
I have set the timing 4 different times, adjusted the TPS sensor, took out the plug for the idle screw and reset the IAC trying to get it to idle correctly. How can I get the RPM up so that in gear it will come down to where it needs to be? It seems if I raise the RPM by the adjusting screw or TPS, the computer will just make changes until it gets it back to the setting in the computer. I cannot find anywhere on Tuner Pro to just set the idle up.
Moderator
Chapter 5 of the Tuning Guide Book sticky, ECM section '8063/'7747/'8746 has an IAC write up in it. Explains a lot about how the IAC logic works.
RBob.
RBob.
Thank you for your help. I read whats there and I think I understand that steps of my IAC are how I can change the idle rate? But it says you step them down. Is that correct?
Do you have seperate idle RPM vs coolant table for park as well as drive. Apparently not.
When you place in D you will move to a different RPM and map cell. Maybe it needs to pull fuel from that other cell? Allow it to do so and adjust that VE cell for fuel.
I happen to idle today on the TSS. so my IAC steps are at zero at 160F-200F to allow TSS to set idle(manual trans).
When you place in D you will move to a different RPM and map cell. Maybe it needs to pull fuel from that other cell? Allow it to do so and adjust that VE cell for fuel.
I happen to idle today on the TSS. so my IAC steps are at zero at 160F-200F to allow TSS to set idle(manual trans).