Car Will Not Idle, Help!
04-20-2007, 04:53 PM
#1
Senior Member
Thread Starter
Join Date: Mar 2006
Posts: 1,046
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: 2000 Hyundai Elantra
Story: I finished up getting everything installed on my car. Before it left the garage the car would idle perfectly. Now, it will not idle with the IAC control hooked up and the vacuum line from the intake manifold to the crankcase. If I take off the vacuum line from the intake manifold to the crankcase it will idle. Also, I hooked up my laptop to the SMT and turn the key to the ON position and checked for TPS movement, and it was fine. When the car is on and I apply gas to about 25-30%, the box that corrospond's on the SMT tuning map will not move. Can something be miswired on the SMT/Turbobox? I did tap the same 5v source for the turbo box and wideband, meaning both of these power wires are on one soldered connection. I've also changed out my MAF, TPS, and IAC with no success. Help!
04-21-2007, 02:02 AM
#4
http://www.hyundaiaftermarket.org/images/vendor1.png
Join Date: May 2002
Location: Canada
Posts: 1,500
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: x3 accent gk tiburon santa fe
by using the short plug your eliminating the turbo box,
so if it has the same problem with the turbo box or with the short plug then you need to look either at your wiring (smt-6 & turbo box) or an actual car problem (tps, tps connector, wiring
why do you need a 5 volt supply for your wideband? never came across the need to feed 5 volt to the wideband ?
you might be putting too much "stain" on the ecu 5 volt system
how did you wire up your map sensor? is it connected to the tps wire to get the 5 volt and ground?
so if it has the same problem with the turbo box or with the short plug then you need to look either at your wiring (smt-6 & turbo box) or an actual car problem (tps, tps connector, wiring
why do you need a 5 volt supply for your wideband? never came across the need to feed 5 volt to the wideband ?
you might be putting too much "stain" on the ecu 5 volt system
how did you wire up your map sensor? is it connected to the tps wire to get the 5 volt and ground?
04-21-2007, 04:49 AM
#5
Senior Member
Thread Starter
Join Date: Mar 2006
Posts: 1,046
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: 2000 Hyundai Elantra
There is a wideband output display. I will try to take that connector off. Also, I tapped into the ECU wiring for the 5v for the MAP sensor. I can try to tap into the TPS instead.
04-21-2007, 10:49 AM
#7
Moderator
um... when you move your throttle to 25%, your throttle position sensor should be responding, as well as your MAF. What is the little box that you're referring to? Sounds like a problem in wiring. You should re-check your connections and
04-24-2007, 05:48 PM
#9
Senior Member
Thread Starter
Join Date: Mar 2006
Posts: 1,046
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: 2000 Hyundai Elantra
Well, I found my issues. After working on the car for another two hours tonight, I found the issue. After looking over the car, I looked at the downpipe, and there was NO primary oxygen sensor. He tapped the wiring harness into the secondary oxygen sensor. My narrowband was reading crazy rich at idle, and this will fix it.
