REALLY bad idle and lost power

96SaleenGT · March 9th, 2011, 09:41 PM

Hi all,

I'm new and would appreciate any help. I own a 96 GT 4.6 2v. The idle started getting really bad a couple weeks ago-bad to the point where I'm at a stop light and the car is just shaking. Also, my throttle response fluctuates, i.e. I shift from first to second and I have to slam my accelerator to the floor to get the car to move faster, or I just let the car go at it's own pace and it starts to go faster anyway from 3-5 rpm.

Anyway, I suspect it's the fuel pressure regulator and an o2 sensor but I would like some advice before I buy them. My car is releasing a 1152 code, missing sensor code (negative reading-no id on whether it's an upstream or downstream sensor) and is running really rich.

Any thoughts?

Green4.6 · March 9th, 2011, 09:51 PM

Originally Posted by 96SaleenGT

Hi all,

I'm new and would appreciate any help. I own a 96 GT 4.6 2v. The idle started getting really bad a couple weeks ago-bad to the point where I'm at a stop light and the car is just shaking. Also, my throttle response fluctuates, i.e. I shift from first to second and I have to slam my accelerator to the floor to get the car to move faster, or I just let the car go at it's own pace and it starts to go faster anyway from 3-5 rpm.

Anyway, I suspect it's the fuel pressure regulator and an o2 sensor but I would like some advice before I buy them. My car is releasing a 1152 code, missing sensor code (negative reading-no id on whether it's an upstream or downstream sensor) and is running really rich.

Any thoughts?

Its probably your front o2 sensors, they will make your car run like crap if there bad.

BAD98GT · March 9th, 2011, 10:12 PM

try cleaning the iac

96SaleenGT · March 9th, 2011, 11:20 PM

Originally Posted by Green4.6

Its probably your front o2 sensors, they will make your car run like crap if there bad.

Thanks for the response.

Yeah, I had a feeling it was a sensor issue. Is there a way to find out which of the front is bad? I don't want to replace both if only one is bad.

Also, my buddy tested the fuel pressure regulator and the reading was 20 pounds of pressure (I think the pressure level should be around 50, right?). And wouldn't a bad regulator cause my car to run rich? A code came up saying my car was running rich.

Originally Posted by BAD98GT

try cleaning the iac

I'll do that. Thanks for the response.

97mustanggt · March 10th, 2011, 04:34 PM

sometimes a bad o2 censors will trip codes cuz they sending faulty readings and it will say your car is running rich, clean your iac and your maf, and den change the front 2 o2 censors, let us know how it goes.

96SaleenGT · March 10th, 2011, 05:45 PM

Originally Posted by 97mustanggt

sometimes a bad o2 censors will trip codes cuz they sending faulty readings and it will say your car is running rich, clean your iac and your maf, and den change the front 2 o2 censors, let us know how it goes.

Will do, thanks for the info.

sn95mustanggt · March 10th, 2011, 09:40 PM

good luck!

96SaleenGT · March 10th, 2011, 09:57 PM

^^Thanks man!

mustangman57 · March 11th, 2011, 08:09 PM

I would also throw on a set of plugs. Never hurts make shure u go with OE not the crap that the parts store people always try to sell you with multiple prongs and diamond studded for $10 a plug. These cars like good old cheap plugs until your boosted

97S281 · March 12th, 2011, 07:55 AM

Clean car man. Did you do the clone work yourself? The only thing I see wrong from the outside ( other than the window scoops ) is the S 281 lettering on the front left of the bumper. That should not be there.

It's a very nice looking car either way though. Welcome to the forums.

96SaleenGT · March 24th, 2011, 11:34 PM

Hey all,

Thanks again for the advice and sorry for the late response. It turned out to be a bad o2 sensor (passenger side). The new sensor is going in tomorrow so I'm excited about it. Hopefully my baby will be back to normal.

Originally Posted by 97S281

Clean car man. Did you do the clone work yourself? The only thing I see wrong from the outside ( other than the window scoops ) is the S 281 lettering on the front left of the bumper. That should not be there.

It's a very nice looking car either way though. Welcome to the forums.

Thanks for the compliment! I'm a female by the way

. Yes, I've done all the work myself. Invested over $15,000 into her and I'm still not done. I'm adding some side skirts on Monday (still have the oem GT ones on).

Yeah, I know the lettering on the left side isn't oem Saleen but I like it that way. I want a Saleen Mustang but I don't want an "every-day" looking Saleen (if that makes any sense). People always compliment my car saying that they haven't seen a Saleen like mine before (I wonder why? lol). Thanks for the welcome also. This is a very cool board.

97mustanggt · March 25th, 2011, 12:53 PM

so ur a female, hmmm i c ur also from cali were u live?

glad everything worked out

HurrycaneStang · March 25th, 2011, 01:59 PM

As mentioned, I would really bet on that IAC, as far as your car...

...

your car is beautiful, the only one ive seen that can pull off the quarter scoops on our body style, the only thing I would change would be to black housing headlights, but either way, im jealoush

97S281 · March 25th, 2011, 03:33 PM

Originally Posted by 96SaleenGT

I'm a female .

97S281 · March 25th, 2011, 03:34 PM

Do you have some door filler pads for the side skirts?

96SaleenGT · March 26th, 2011, 09:01 PM

Originally Posted by 97mustanggt

so ur a female, hmmm i c ur also from cali were u live?

glad everything worked out

Hey, I live in Quartz Hill (Southern Cali). Thanks. I'm glad everything worked out too! It's good to have my beast back. For awhile it felt as though I was driving a 4 cylinder Honda lol

.

Originally Posted by HurrycaneStang

As mentioned, I would really bet on that IAC, as far as your car...... your car is beautiful, the only one ive seen that can pull off the quarter scoops on our body style, the only thing I would change would be to black housing headlights, but either way, im jealoush

Hey, I actually looked into the iac but my buddy said that it would only be an issue if my car was idling high (which it wasn't). Thanks for the compliment! I really like your suggestion! I just may look into getting those headlights.

Originally Posted by 97S281

Do you have some door filler pads for the side skirts?

I do actually (thanks to reading some of your past replies because I didn't know about door fillers-Stage 3 calls them door caps/panels). The side skirts and caps are going on Monday-which I'm stoked about! The next thing on the to-do list is either upgrading to an X pipe (I have an H pipe with dual flowmasters) or getting some aftermarket headers...decisions, decisions.

Is that red Saleen your's? If so, it's awesome! What kind of mods do you have for it?

Originally Posted by 97S281

Lol, I don't want to scare any of you guys.

KV007 · March 27th, 2011, 01:24 AM

i feel left out with a gt

but yea check wires and plugs. my passenger 02 sensor is pretty black does that mean its definitly bad?

97S281 · March 27th, 2011, 02:49 PM

Originally Posted by 96SaleenGT

Is that red Saleen your's? If so, it's awesome! What kind of mods do you have for it?

Yes, I bought it in 2004 and it was completely Saleen stock. I have way too many mods. It would take me about 30 minutes to list them all. You can check them out in my garage if you want.

97S281's 1997 Saleen S281

mayosailor27 · March 27th, 2011, 02:53 PM

OP-- nice car. What wheels do you have on it now? I cant see your avatar and I def need new wheels for my car. The original (or saleen original) Salen Lemans rims I hate and the chrome is peeling inside. SO I need some.

97S281 · March 27th, 2011, 03:41 PM

Mayo: There are some shops in PA that can rechrome your wheels. Try a google search and they should come up.

March 9th, 2011, 09:41 PM	#1
96SaleenGT Newbie 1996 Saleen GT Join Date: Mar 2011 Location: California Posts: 15 iTrader: 0 reviews	REALLY bad idle and lost power Hi all, I'm new and would appreciate any help. I own a 96 GT 4.6 2v. The idle started getting really bad a couple weeks ago-bad to the point where I'm at a stop light and the car is just shaking. Also, my throttle response fluctuates, i.e. I shift from first to second and I have to slam my accelerator to the floor to get the car to move faster, or I just let the car go at it's own pace and it starts to go faster anyway from 3-5 rpm. Anyway, I suspect it's the fuel pressure regulator and an o2 sensor but I would like some advice before I buy them. My car is releasing a 1152 code, missing sensor code (negative reading-no id on whether it's an upstream or downstream sensor) and is running really rich. Any thoughts?

March 10th, 2011, 04:34 PM	#5
97mustanggt Hardcore Enthusiast 97GT & 97Snake & 00L T.B.A Join Date: Aug 2008 Location: Richgrove, Ca Posts: 2,183 iTrader: 0 reviews	sometimes a bad o2 censors will trip codes cuz they sending faulty readings and it will say your car is running rich, clean your iac and your maf, and den change the front 2 o2 censors, let us know how it goes. __________________ 97 Cobra & 00 Lightning Beauty & The Beast I rev next to hybrids so they can hear me kill the environment MM Cobra Club Member #77 MM Lightning Club Founder

March 10th, 2011, 09:40 PM	#7
sn95mustanggt Enthusiast 98 GT, 93 Ranger! Join Date: May 2009 Location: NEBRASKA Posts: 832 iTrader: 2 reviews	good luck! __________________ 1998 Mustang GT-S/C Teksid in the works 1999 Mazda b3000- DD 05 Rancher - 4x4 07 zx6r 2009 Kfx450r yz 125 98 banshee- for sale

March 11th, 2011, 08:09 PM	#9
mustangman57 Regular Join Date: Oct 2010 Posts: 184 iTrader: 0 reviews	I would also throw on a set of plugs. Never hurts make shure u go with OE not the crap that the parts store people always try to sell you with multiple prongs and diamond studded for $10 a plug. These cars like good old cheap plugs until your boosted __________________ 96 mystic Cobra, 96 block, .20 over CP forged flat tops (9.5:1 comp), Manly Rods, 03 Cobra crank, Comp Stg2 Blower Cams, Ported B-heads, Spec Fly Wheel, Spec Stage 3 clutch (soon to be a stage 4 ), T-trim @15 Psi, Front Mount, 537 with belt slip

March 12th, 2011, 07:55 AM	#10
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: The lost highway Posts: 6,673 iTrader: 13 reviews	Clean car man. Did you do the clone work yourself? The only thing I see wrong from the outside ( other than the window scoops ) is the S 281 lettering on the front left of the bumper. That should not be there. It's a very nice looking car either way though. Welcome to the forums. __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

March 9th, 2011, 10:12 PM	#3
BAD98GT Enthusiast Join Date: Feb 2010 Posts: 953 iTrader: 0 reviews	try cleaning the iac

March 10th, 2011, 09:57 PM	#8
96SaleenGT Newbie 1996 Saleen GT Join Date: Mar 2011 Location: California Posts: 15 iTrader: 0 reviews	^^Thanks man!

March 25th, 2011, 12:53 PM	#12
97mustanggt Hardcore Enthusiast 97GT & 97Snake & 00L T.B.A Join Date: Aug 2008 Location: Richgrove, Ca Posts: 2,183 iTrader: 0 reviews	so ur a female, hmmm i c ur also from cali were u live? glad everything worked out __________________ 97 Cobra & 00 Lightning Beauty & The Beast I rev next to hybrids so they can hear me kill the environment MM Cobra Club Member #77 MM Lightning Club Founder

March 25th, 2011, 01:59 PM	#13
HurrycaneStang Captain Opinionated! 01' Cobra Vert When life throws you a curve, downshift and take it vigorously. Join Date: Jun 2010 Location: Sandy Eggo, CA Posts: 2,930 iTrader: 0 reviews	As mentioned, I would really bet on that IAC, as far as your car...... your car is beautiful, the only one ive seen that can pull off the quarter scoops on our body style, the only thing I would change would be to black housing headlights, but either way, im jealoush

March 25th, 2011, 03:34 PM	#15
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: The lost highway Posts: 6,673 iTrader: 13 reviews	Do you have some door filler pads for the side skirts? __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

March 27th, 2011, 01:24 AM	#17
KV007 Hardcore Enthusiast 2003 Mustang Gt Slow Join Date: Jul 2009 Location: redding,california Posts: 2,532 Blog Entries: 2 iTrader: 2 reviews	i feel left out with a gt but yea check wires and plugs. my passenger 02 sensor is pretty black does that mean its definitly bad? __________________ 409rwhp at 4500 rpms.Vortech V1 Intercooled,kurgan motorsports powerpipe, 3.12 pulley, all Mac Exhaust,Sct Tuner,Bolt Ons,Cobra Brakes,MM cc plates,Vis 2000 cobra r hood,MGW shifter,Strange 31 Spline axles,Eaton Possi

March 27th, 2011, 02:53 PM	#19
mayosailor27 Better than Drugs! 97 Cobra makin' women wet Decent @ A fast one Join Date: Feb 2011 Location: Norfolk, VA now Posts: 1,587 iTrader: 0 reviews	OP-- nice car. What wheels do you have on it now? I cant see your avatar and I def need new wheels for my car. The original (or saleen original) Salen Lemans rims I hate and the chrome is peeling inside. SO I need some. __________________ 96 GT-sold 98 GT-05 katrina victim-parted 90 GT-traded 98 GT-traded 98 GT-parted 94 GT/Cobra-sold 95 Cobra Saleened-sold 97 Cobra-knock -sold 99 GT-knock-sold 97 Cobra-sold 96 Cobra-nothing wrong but stock! MM Cobra member 969

March 27th, 2011, 03:41 PM	#20
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: The lost highway Posts: 6,673 iTrader: 13 reviews	Mayo: There are some shops in PA that can rechrome your wheels. Try a google search and they should come up. __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

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