why does my safc read 24% throttle at idle
#1
Yar-Har-Har
Thread Starter
Join Date: Sep 2002
Location: Nashville, 37217
Posts: 1,954
Likes: 0
Received 0 Likes
on
0 Posts
why does my safc read 24% throttle at idle
please dont move this as the # of people that view the safc forum is next to none. if you post something in there you are extremely lucky to get a response ..
i know 2nd gen browsers have safc's and im just curious if you guys have this problem too?
while decelerating above 3k or so it will read 0 throttle when i let off, but at idle it reads anywhere from 20-28 % throttle..
i have it hooked into the pressure sensor .. is that why?
i know 2nd gen browsers have safc's and im just curious if you guys have this problem too?
while decelerating above 3k or so it will read 0 throttle when i let off, but at idle it reads anywhere from 20-28 % throttle..
i have it hooked into the pressure sensor .. is that why?
Last edited by Fitness Stain; 04-07-05 at 06:21 PM.
#2
The Only SlidinRX7
Join Date: Jul 2002
Location: Hawaii
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
If you hooked up the SAFC up properly, using the wiring diagram provided with the SAFC, then everything should be alright. When I swapped my TII into my NA, the SAFC read the TPS differently. All I had to do was go through the setup process to let the SAFC re-learn the TPS.
#3
Locust of the apocalypse
Join Date: Apr 2003
Location: Directly above the center of the earth (York, PA)
Posts: 2,553
Likes: 0
Received 1 Like
on
1 Post
OK... did you buy the car from someone else with the safc in it??
IF so.. then they hooked the TPS input on the safc into the boost sensor... which is the way to go on an s4... really, because the s4 TPS is short range..
OR you hooked it up to the boost sensor on our advice and just didn't realize that the SAFC would learn that 0% is the lowest vacuum that the car sees, which is not when you are at idle!!
If its hooked up that way.. it will read 24% at idle because it has learned that the LOWEST possible reading is about 30 inches of vaccume.. wich you will only see when you are decelerating, in gear!!!! At idle.. you are most likely at 16 inches of vaccume.. which must correspond to 24% of the entire pressure range!!!
IF so.. then they hooked the TPS input on the safc into the boost sensor... which is the way to go on an s4... really, because the s4 TPS is short range..
OR you hooked it up to the boost sensor on our advice and just didn't realize that the SAFC would learn that 0% is the lowest vacuum that the car sees, which is not when you are at idle!!
If its hooked up that way.. it will read 24% at idle because it has learned that the LOWEST possible reading is about 30 inches of vaccume.. wich you will only see when you are decelerating, in gear!!!! At idle.. you are most likely at 16 inches of vaccume.. which must correspond to 24% of the entire pressure range!!!
#5
Ihre Papieren, Bitte?
iTrader: (1)
You have a series iv. It has a narrowband tps sensor. ie: 30% of actual throttle position = aobut 100% on the safc. Make sure you tps is adjusted to spec. On series iv's, anything over idle is pretty much 100% throttle reading on the safc. not much you can do about other than converting it to use the boost sensor, or rigging in a wideband tps somehow.
#7
Super Raterhater
iTrader: (6)
Join Date: Dec 2001
Location: NY, MA, MI, OR, TX, and now LA or AZ!
Posts: 10,624
Likes: 0
Received 2 Likes
on
2 Posts
Originally Posted by Fitness Stain
i have it hooked into the pressure sensor .. is that why?
He did, kind of say it WAS hooked to the pressure sensor. I hate it when people give help without even reading the thread!
Trending Topics
#10
Yar-Har-Har
Thread Starter
Join Date: Sep 2002
Location: Nashville, 37217
Posts: 1,954
Likes: 0
Received 0 Likes
on
0 Posts
thanks guys .. i assumed it was reading like that cause of it being hooked to the pressure sensor ...
since it reads that as the lowest point while idling, should i raise the switch over percentage ..
right now the low map is at lik 15% and the high is at like 50%
should i adjust these #'s since i read 24% throttle at idle?
since it reads that as the lowest point while idling, should i raise the switch over percentage ..
right now the low map is at lik 15% and the high is at like 50%
should i adjust these #'s since i read 24% throttle at idle?
#11
Super Raterhater
iTrader: (6)
Join Date: Dec 2001
Location: NY, MA, MI, OR, TX, and now LA or AZ!
Posts: 10,624
Likes: 0
Received 2 Likes
on
2 Posts
Nah that's probably a pretty good range for now, unless it's not reading over 50% util late in the band (or really really quickly).
Wanked: You posted 2 hours and 19 minutes after he last edited it, what did you do, click the link, not reply for like 2 hours, then post?
Wanked: You posted 2 hours and 19 minutes after he last edited it, what did you do, click the link, not reply for like 2 hours, then post?
#12
Yar-Har-Har
Thread Starter
Join Date: Sep 2002
Location: Nashville, 37217
Posts: 1,954
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by SonicRaT
Wanked: You posted 2 hours and 19 minutes after he last edited it, what did you do, click the link, not reply for like 2 hours, then post?
yeah i was about to mention the time frames there
haha
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
msilvia
3rd Generation Specific (1993-2002)
28
04-14-16 12:58 PM
CaptainKRM
2nd Generation Specific (1986-1992)
14
08-26-15 09:52 PM