Fluctuating Idle and then dies

[markdr7]

I have a 95 Talon that I installed a boost controller, boost gauge, electric oil pressure gauge, and a/f fuel gauge on yesterday. When I first did that I went to take the car for a test drive and it started to stall out and die. Turns out it was out of gas. The fuel gauge is off. Then I put gas in, thinking that was just the problem. It wasn't. I started to drive it again and the car drives great. But when I stop or go into neutral the idle will drop down and bounce back and forth from 800rpm to 200 or so. and occasionally it will die. It has also died when I stopped quickly at red lights. Any ideas or suggestions are greatly appreciated. Sorry for the long post.

 

[Bud92gsx]

DId you vent your BOV?

 

[thewombis]

It has also died when I stopped quickly at red lights.

Sounds MAF related. Unplugged, or you are venting the BOV like stated above.

 

[xioca]

Search "Idle Surge" titles only and have fun reading. Also look on Vfaq. Idle surge is a pain in the arse.

 

[markdr7]

No the BOV is not vented. It was when I bought it but I took care of that.

 

[Bud92gsx]

http://www.dsmtuners.com/forums/turbo-system-tech/321087-compressor-surge.html

http://www.dsmtuners.com/forums/newbie-forum/320873-boost-surge-engine-surge.html

Here you go man..

 

[xioca]

If it's when you push the clutch in it wouldn't be compressor surge, but rather idle surge. Check you ICS.

 

[Bud92gsx]

And the ICS is what exactly?

 

[xioca]

http://www.dsmtuners.com/forums/problem-diagnosis/134255-isc-motor-ics-motor.html

 

[Bud92gsx]

Sweet, thats what I thought it was..I'm a bit behind on my terms..

 

[xioca]

Yeah I actually thought I called it the wrong thing until I found that thread.

 

[Bud92gsx]

Lol...

 

[markdr7]

Is there any way that my boost controller or my a/f gauge messed something up? On the a/f gauge I tied into the o2 wire correctly but on the directions it says to get your 12v power from the harness as well but I just tied it in to a different accessory wire. Not sure if that makes a difference or not. Also on the boost controller it is not working. I've researched alot on here to make sure that I hooked it up correctly I think that I did. The only thing that I did differently is I didn't disconnect the hose that goes from the boost controll solenoid to the intake. Would any of this affect the idle? I'll fix the boost contoller hose tomorrow and see. Any ideas?

 

[Bud92gsx]

Is there any way that my boost controller or my a/f gauge messed something up? On the a/f gauge I tied into the o2 wire correctly but on the directions it says to get your 12v power from the harness as well but I just tied it in to a different accessory wire. Not sure if that makes a difference or not. Also on the boost controller it is not working. I've researched alot on here to make sure that I hooked it up correctly I think that I did. The only thing that I did differently is I didn't disconnect the hose that goes from the boost controll solenoid to the intake. Would any of this affect the idle? I'll fix the boost contoller hose tomorrow and see. Any ideas?

It does sound like you hooked something up wrong...

What other Accessory did you tie into? And how did you tie into this wire?

 

[markdr7]

Well I talked to my brother and looked at the wiring we did hook it up the correct way. Think it could be the boost controll solenoid hose still being attached to the intake? Thats only other thing that we did other that the boost gauge, pretty sure thats hooked up right, its not very difficult. And the oil pressure gauge again thats easy. The only other thing I can think of might be a vaccum leak? I'll do a boost leak test on monday. Does that find vaccum leaaks as well? It was idleing just fine before we put the gauges and controller on. So we did something just have to figure out what.

 

[Bud92gsx]

Well I talked to my brother and looked at the wiring we did hook it up the correct way. Think it could be the boost controll solenoid hose still being attached to the intake? Thats only other thing that we did other that the boost gauge, pretty sure thats hooked up right, its not very difficult. And the oil pressure gauge again thats easy. The only other thing I can think of might be a vaccum leak? I'll do a boost leak test on monday. Does that find vaccum leaaks as well? It was idleing just fine before we put the gauges and controller on. So we did something just have to figure out what.

What did you tie into for your boost guage? The brake booster?

You should do a vaceum leak, or boost leak test as well..

 

[markdr7]

I tied into the wastegate and the nipple that comes off of the turbos compressor. The only thing that I didn't do that your supposed to is, I didn't remove both of the vaccum hoes that come of of the boost controll valve. I removed the one that t's into the wastgate, but not the one that goes to the intake. I'll do that in the daylight tomorrow and see if that does anything. Its the only thing that I can think of, unless we knock something loose?