|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
09-27-2019, 09:01 PM
|
#1 |
|
Registered User
Join Date: Jan 2012
Location: Petal,Ms.
Posts: 428
|
Faking a/c to raise idle speed
I have a 6.0 gen3 FI swap in 67c10. My air is vintage sure fit. All my air is controlled by vintage controls. My fans are controlled by engine temp/ecm. The engine wants to stumble at red lights or stopping when ac is being used. I talked to my tuner and he said ecm is tuned for ac idle adjustment. OK I want to send a signal to ecm to get it to raise idle when ac is on? I sent 12volts to red 17 and grounded red 55 but nothing changes. Does anyone have any ideas? What I can do to fake ecm inputs?
|
|
|
|
09-28-2019, 11:43 PM
|
#2 |
|
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,255
|
Re: Faking a/c to raise idle speed
Lol why fake it when you can simply have the ECU do it? If you had a gen4 or gen5 peobably be another story, you have a simple solution.
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
|
|
|
|
10-06-2019, 08:21 PM
|
#3 | |
|
Registered User
Join Date: Jan 2012
Location: Petal,Ms.
Posts: 428
|
Re: Faking a/c to raise idle speed
Quote:
|
|
|
|
|
|
10-06-2019, 10:16 PM
|
#4 |
|
Registered User
Join Date: Jun 2005
Location: Vancouver
Posts: 111
|
Re: Faking a/c to raise idle speed
Have your tuner look at it again, if it's all hooked up it's in the tune.
__________________
GIZZmotorsports on YouTube & my panel truck build '69 c10 panel, '75 c35 flatdeck car hauler |
|
|
|
|
10-07-2019, 11:28 PM
|
#5 | |
|
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,255
|
Re: Faking a/c to raise idle speed
Quote:
If you simply pull a 2002 Camaro ac schematic that's the end of the thread.
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
|
|
|
|
|
10-08-2019, 05:11 AM
|
#6 |
|
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,118
|
Re: Faking a/c to raise idle speed
What year is your PCM and harness? It makes a difference. 99-02 trucks use pressure switches and 2003 and up trucks use a pressure sensor. 98-02 Camaro also use a pressure sensor.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
|
|
|
|
10-09-2019, 12:07 AM
|
#7 | |
|
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,255
|
Re: Faking a/c to raise idle speed
Quote:
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
|
|
|
|
|
10-09-2019, 12:58 PM
|
#8 |
|
Senior Member
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
|
Re: Faking a/c to raise idle speed
I adjusted my idle when in gear and set the TC lock/unlock RPMs I adjusted them when the truck was at a speed below like 5 mph(in the Tune). took care of the stumble when the AC was on coming to a stop sign. I have a 2011 gen IV so I could not tell the ECM the AC was on for it to adjust.
__________________
1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO  GO!!!
|
|
|
|
|
| Bookmarks |
|
|
Linear Mode
