Idling problem

dothedew1654 · October 25th, 2007, 01:12 AM

I just got a new 95 mustang gt. Its a 5 speed, but it seems to be idling rough. i just started it up today, and it was idling, and after like 5 seconds of the rpms going back and forth between 200-700. it just died. i started it back up and did the same thing. this is the fourth time it has happened. does anyone have an advice for this?

Twist it up · October 26th, 2007, 09:57 PM

probably the idle air valve sticking

svtcrazy · October 27th, 2007, 05:18 PM

agreed

MikeC_95GT · October 27th, 2007, 08:20 PM

that's the first thing i'd check too.

Tony_90fox · October 28th, 2007, 01:36 AM

Clean the IAC, MAF sensor, check for vacuum leaks. If none of those solves the problem, let us know.

dothedew1654 · October 29th, 2007, 08:13 PM

ya im cleaing out the IAC, MAF sensor, and checking for vacuum leaks today. I'm also cleaning the throttle body, I heard that could cause idle problems as well. I'll let you know how it idles later on. Thanks.

dothedew1654 · October 29th, 2007, 11:03 PM

I just cleaned the IAC. And started it back up and the idle is now worse. It is idling at 1100-1300 and i cannot get it to go back down. Any more ideas?

RAMS#20 · October 31st, 2007, 10:36 PM

Sounds kind of familiar. My 94 was idling at 1500 all the time then it started idling higher the longer it ran. I cleaned the IAC also but mine improved, at least for about 10 min, now sometimes it idles below 1000 sometimes it does not. I checked for vacuum leaks and had the codes read. I had two codes, a barometric pressure sensor and an O2 sensor.

It would seem like it would be the TPS or the IAC from information I received before but neither of them sent a code to the computer. I really don’t want to start replacing sensors without knowing which one it is. The guys on here say go with the TPS first because it is the cheapest so I guess that will be my next step.

Good Luck

I also heard that 94 and 95's have a bad problem with idling issues

dothedew1654 · November 1st, 2007, 12:49 AM

I bought a new IAC, and it fixed the problem completely. It cost me 128 dollars at Napa. They had it to, didn't have to order it.

RAMS#20 · November 3rd, 2007, 05:01 PM

New IAC looks like it worked for me also, it ideled at 2000 when I got home. Swapped the old one with the new one and right down to 1000. I will tweek it down to 950 when I get a chance.

October 25th, 2007, 01:12 AM	#1
dothedew1654 Regular 1995 Mustang GTS Join Date: Sep 2007 Location: San Diego Posts: 74 iTrader: 0 reviews	Idling problem I just got a new 95 mustang gt. Its a 5 speed, but it seems to be idling rough. i just started it up today, and it was idling, and after like 5 seconds of the rpms going back and forth between 200-700. it just died. i started it back up and did the same thing. this is the fourth time it has happened. does anyone have an advice for this?

October 27th, 2007, 08:20 PM	#4
MikeC_95GT Newbie Join Date: Oct 2007 Posts: 7 iTrader: 0 reviews	that's the first thing i'd check too. __________________

October 28th, 2007, 01:36 AM	#5
Tony_90fox Banned Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,803 iTrader: 0 reviews	Clean the IAC, MAF sensor, check for vacuum leaks. If none of those solves the problem, let us know. __________________ [SIGPIC][/SIGPIC] [B][U]MM Sapper Squad[/U][/B] [QUOTE=Regency 2007;1676187]MSO's stupidity has never stopped amazing me since the day he joined this forum.[/QUOTE]

October 29th, 2007, 08:13 PM	#6
dothedew1654 Regular 1995 Mustang GTS Join Date: Sep 2007 Location: San Diego Posts: 74 iTrader: 0 reviews	ya im cleaing out the IAC, MAF sensor, and checking for vacuum leaks today. I'm also cleaning the throttle body, I heard that could cause idle problems as well. I'll let you know how it idles later on. Thanks. __________________ 95 Mustang GTS, 5 Speed, MAC O/R H Pipe, MAC Catback, BBK CAI, Eibach Lowering Springs, Steeda Tri-Ax, Black Bullit 17x9 with 255/40/17 BFG t/a kdws.

October 29th, 2007, 11:03 PM	#7
dothedew1654 Regular 1995 Mustang GTS Join Date: Sep 2007 Location: San Diego Posts: 74 iTrader: 0 reviews	I just cleaned the IAC. And started it back up and the idle is now worse. It is idling at 1100-1300 and i cannot get it to go back down. Any more ideas? __________________ 95 Mustang GTS, 5 Speed, MAC O/R H Pipe, MAC Catback, BBK CAI, Eibach Lowering Springs, Steeda Tri-Ax, Black Bullit 17x9 with 255/40/17 BFG t/a kdws.

October 26th, 2007, 09:57 PM	#2
Twist it up Regular 1990 hatchback lx Join Date: Oct 2007 Location: north alabama Posts: 227 iTrader: 0 reviews	probably the idle air valve sticking __________________ www.hsvracing.com

October 27th, 2007, 05:18 PM	#3
svtcrazy Newbie Join Date: Oct 2007 Location: Chesapeake, VA Posts: 15 iTrader: 0 reviews	agreed

October 31st, 2007, 10:36 PM	#8
RAMS#20 Newbie 94 Conv. GT Join Date: Oct 2007 Posts: 17 iTrader: 0 reviews	Sounds kind of familiar. My 94 was idling at 1500 all the time then it started idling higher the longer it ran. I cleaned the IAC also but mine improved, at least for about 10 min, now sometimes it idles below 1000 sometimes it does not. I checked for vacuum leaks and had the codes read. I had two codes, a barometric pressure sensor and an O2 sensor. It would seem like it would be the TPS or the IAC from information I received before but neither of them sent a code to the computer. I really don’t want to start replacing sensors without knowing which one it is. The guys on here say go with the TPS first because it is the cheapest so I guess that will be my next step. Good Luck I also heard that 94 and 95's have a bad problem with idling issues

November 1st, 2007, 12:49 AM	#9
dothedew1654 Regular 1995 Mustang GTS Join Date: Sep 2007 Location: San Diego Posts: 74 iTrader: 0 reviews	I bought a new IAC, and it fixed the problem completely. It cost me 128 dollars at Napa. They had it to, didn't have to order it. __________________ 95 Mustang GTS, 5 Speed, MAC O/R H Pipe, MAC Catback, BBK CAI, Eibach Lowering Springs, Steeda Tri-Ax, Black Bullit 17x9 with 255/40/17 BFG t/a kdws.

November 3rd, 2007, 05:01 PM	#10
RAMS#20 Newbie 94 Conv. GT Join Date: Oct 2007 Posts: 17 iTrader: 0 reviews	New IAC looks like it worked for me also, it ideled at 2000 when I got home. Swapped the old one with the new one and right down to 1000. I will tweek it down to 950 when I get a chance.

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