MY IDLE IS DRIVING ME F****N CRAZY!!!

[95Vert]

When I start it, my idle will go up and down and almost die. I have to drive the car for a while so it won't die. When I put it in N, the rpms drops and the car dies for a split second and then it starts by itself. WTF!? I really have no idea WTF is wrong. I already cleaned out the MAF, IAC(3 weeks old), I replaced the ACT with a resistor and vice versa. What else can be the problem. I hope that my A9L swap will fix this problem!!!

 

[drakesdad]

Nacho......if you have a cold air intake make sure the electronic part of the MAF is at 12 o'clock....sounds like the same issue I had.....also maybe check the TPS.......

 

[95Vert]

I don't have a aftermarket CAI. My maf isn't centered, so I'll do that. I have the 93 T/B conversion and I've checked it and it's at .987, like required.

 

[zenboy99]

I use to have the same problem. Once I would drive around for awhile the car would go into closed loop and it would be fine. Its an open loop problem, your car is going rich, lean, rich, lean after you start it up. I changed my open loop fuel tables with my Tweecer and everything was fine.

I take it your not running a chip or anything with that E cam?

 

[Guero]

It drives you crazy huh Nacho!!!!!!!!!!! Same **** here!!!!

 

[MustangGT95]

Nope right now the ECU is all stock. I think I am getting Tweecer soon. I need to find a cheap laptop first.

 

[MysticKeith50]

have you ever checked the duty cycle of your iac....i believ it should be like 25-35% at idle....I had this problem when I installed a throttle body, and the screw on the throttle body that is next to the iac was closing due to vibration, and it was essentially making it so it wouldn't work....worth a try

 

[maximos]

my idle has been doing something similar lately, it will jump up and down but it will only die occasionally...also, sometimes when i start it up it will jump up like normal and just die. a month ago i cleaned the MAF and put new O2 sensors in

 

[95Vert]

Did you solve anything maximos?

Mystic, how do I check my IAC? I'm pretty sure my problem is a damn sensor. I disconnect my battery and after I connect it, it'll run fine for a few minutes, and like it picks up a bad readin and it starts again. When I'm driving normal, it feels like the car drags for a second and then it "frees" up. It does it a lot. Sounds like that open/close loop problem like Chad said. I just swapped out to an a9l computer but it still does it. It has to be a damn sensor. I'm going to start another thread about my swap.

 

[Blackened302]

you should probably connect that ACT sensor--probably not the problem but it could be adding to it?

 

[95Vert]

it is connected. I don't know if I should relocate it to runner #5 on the intake like the 87-93 stangs.

 

[maximos]

i replaced the sensors and cleaned the MAF and it is still idling funny are there some other sensors i should be looking at?

 

[MustangGT95]

How exactly do you clean the maf?

 

[MysticKeith50]

i checked mine with one of those snap-on computer scanners.

 

[final5-0]

it is connected. I don't know if I should relocate it to runner #5 on the intake like the 87-93 stangs.

IMHO, it would make more sense since you did the pcm retro fit.

IIRC, you need a specific fox act and if that is so ......

You would not wanna relocate your original act.

btw ... Don 95Vert has posted a good bit of info about the subject.

Grady

 

[HISSIN50]

Another vantage point is that when fox guys use the Explorer intake [on their foxes], it seems to me that they relo' the ACT to the airbox (kinda like what we have stock). The fox ACT function aint all whiney like the 94-95 function is.

I have NO personal experience with that - just my recollection of what the fox guys have posted.

 

[MI95Cobra]

95vert whats your original idle at when starting??? also try to open your throttle a little bit more then it is... it'll help your idle....but make sure its not to much...

 

[95Vert]

I have the 93 TB conversion and my TB doesn't have that screw to open my idle.

Grady, where's Don's posted information?

Hissin, so your saying that since I have the ex. intake and a9l, i can get by by leaving the act in the induction tube? Do I need the 93 ACT as well?

I troubleshot(sp?) my problems yesterday. I swapped out 3 MAF, left it unplugged, replaced the ACT with the resistor, and even left nothing in the ACT plug. Doing all of these things, it still did the bogging thing. It's pretty bad. It feels like you're downshifting, it'll throw your head forward a bit, then it'll move and keep doing this. I don't think it's my MAF. It may be my ACT, since it acted the same w/or w/o it unplugged.

 

[final5-0]

Grady, where's Don's posted information?

Its everywhere ... here, Corral, and IIRC he and his boy have even made up a website.

I do know he has posted info about it here but not sure which forum.

Just use ... Oh No .......... SEARCH

Grady

 

[95Vert]

Its everywhere ... here, Corral, and IIRC he and his boy have even made up a website.

I do know he has posted info about it here but not sure which forum.

Just use ... Oh No .......... SEARCH

Grady

Noooooooooooooooooooooooooooooooooooooooooooooooo
I'll see what I can dig up.