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Author
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Topic: Idle Problems, really bad please help.......
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BlackDrop50
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Member # 1715
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posted
 
 
I have a bad problem with my car when I am idling at a stoplight or if I drive really slow. The idle surges for 5-10 seconds, then the car will just die.
I have a leaking headgasket but I don't know if that is related or not. The problem went away for two weeks right after I had the oil changed, but now it is back again.
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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Mach103
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Member # 746
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posted
please someone help i have the same problem. when i start my car idles fine, 900-1000 rpms. almost perfect. but when i start driving it acts up like a bitch. but it doesnt do it all the time when i get to a light it will surge for like 5 seconds at the most the idle fine but sometimes it will surge like crazy then die. help please. for the both of us.
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2007 Ford Mustang GT
1995 Mustang GT Sapphire Blue(SOLD)
2003 Mustang Mach 1 (SOLD)
2006 Chevy Trailblazer SS
Posts: 898 | From: Yuba City | Registered: Jan 2002
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Drew B
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Member # 698
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posted
have you checked you tps? whats it at? my car idles fuuny because my egr isn't hooked up
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AKA.GR40coupe
Posts: 1992 | From: Nor-cal | Registered: Jan 2002
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JohnCM
CAFords OG
Member # 1076
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posted
Yeah, Try getting a new TPS. (Throttle Position Sensor) it's probably about 35 bucks or so. And if that's not it, that's one less thing to worry about. Or try some contact cleaner and clean the connection and stuff. ![[patriot]](graemlins/patriot.gif)
Posts: 3545 | From: Roseville | Registered: Mar 2002
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Mach103
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Member # 746
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posted
um i tried doing all that cleanging crap on the 10 pin connectors still doesnt work i have been through like 3 tps sensors, they always seem to change, or i can never get it down too .92-.99 its weird.
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2007 Ford Mustang GT
1995 Mustang GT Sapphire Blue(SOLD)
2003 Mustang Mach 1 (SOLD)
2006 Chevy Trailblazer SS
Posts: 898 | From: Yuba City | Registered: Jan 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
Check your TPS(throttle position sensor) with a digital voltmeter. Voltage should be around .998 volts @ idle....If it is not, try moving it around until it is at .998v, then screw it back down.....When you are down with that and it does not cure your problem then check the idle bypass sensor(The other sensor on the throttle-body)...Take the 2x 8mm screws off and the sensor off...Clean the sensor with carb. cleaner as well as you can!!.. Then re-install....Hopefully it cures the problem.. ![[burnout]](graemlins/burnout.gif)
[ January 05, 2003, 11:43 PM: Message edited by: Black94 5.0 ]
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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BlackDrop50
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Member # 1715
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posted
Could the problem be my fuel system?
This problem only happens after a while of driving the car. This problem NEVER happens when I am heavy on the gas or the freeway.
A couple people I know told me it might be my fuel filter, and my fuel pump is extremeley loud, I checked around on stangnet and the general opinion is that a loud fuel pump is a dying fuel pump.
Can anybody clarify on this?
[ January 06, 2003, 12:09 PM: Message edited by: BlackDrop50 ]
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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chosen1
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Member # 1906
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posted
i fell victim to the same surging problem on my car. i replaced the tps -no help. i replaced the iac and throttle body -no help. i replaced the egr valve -helped a little bit but problem worsened later. replaced mass air -no help. even disconnected tps for a bit -car idled really low but manageable -not a good fix. finally i replaced the computer...problem solved. i spent 300 before the computer. sucks. no problems since.
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1967 Fastback. Should go 10's -but doesn't
1993 Cobra
2003 Suzuki SVS
1966 Coupe -For Sale
Posts: 2205 | Registered: Sep 2002
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Wildfire532FB
CAFords OG
Member # 1482
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posted
Change your fuel filter my friend had the same problem and i changed it for him and the problem never came back
Posts: 17580 | From: 530 | Registered: Jun 2002
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BlackDrop50
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Member # 1715
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posted
Ok I bought a fuel filter, it's going in on thursday and at the same time my dad's friend who is a mechanic is going to check out the whole car.
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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UNLUCKIER
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Member # 435
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posted
when my fuel pump finally went out on me.. My car would not idle worth of shit.. Then all of a sudden it quit on me.. It gradually did the same thing that yours is doing to you...
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The great pleasure in life is doing what people say you cannot do.
AND YES THE RAMS FAN
Posts: 1023 | From: ODENTON MD | Registered: Sep 2001
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BlackDrop50
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Member # 1715
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posted
Well if it does take a crap on me, I'll just upgrade to a 255 lph pump
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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Mach103
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Member # 746
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posted
CHOSEN1 how can u tell if your computer is bad i have done everything u did no change, any things u can test to see if computer is bad.
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2007 Ford Mustang GT
1995 Mustang GT Sapphire Blue(SOLD)
2003 Mustang Mach 1 (SOLD)
2006 Chevy Trailblazer SS
Posts: 898 | From: Yuba City | Registered: Jan 2002
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cheap
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Member # 858
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posted
Clean your throttle body really good, and your tps, with throttle body and intake cleaner. Change your fuel filter. Check the fuel pressure at your rail, if its still low check the filter sock in your tank on the bottom of the tank pump. Also if your mileage is high your timing chain might need to be changed.
If you have a K&N your maf might be messed up... sometimes the oil from the filter clogs up the maf sensor filament, try buying some electrical contact cleaner (something that doesn't leave any residue) and spray it on your maf filament.
Cant think of anything else that hasn't been said already.
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1965 Spyder GT
Posts: 1358 | From: Maine | Registered: Feb 2002
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shadow50
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Member # 2265
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posted
Guys, guys,
I'm not one to assume and replace an expensive part like a computer. but it can be a culprit. But try the cheaper way too. I've read down the reply's and no one has mentioned replacing their O2 sensors.
My 84 had a surge problem, it was embarrassing!
I fought and fought with it. I hated that CFi injection. Turned out to be the o2 sensor.
I never replaced it before!
I had an 83 escort with efi it had the same problem too. I sold it to get my convertible.
Now she's got true efi and idles great! new sensors I must add. ![[Smile]](smile.gif)
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84 5.0 vertible balanced . E303 cam,MSD Dist, BBK Shorties,
BBK cold air intake, Flowmaster Exhaust, 89 Saleen body kit, T-5 swap 92 EFI conversion.
Posts: 44 | From: Pleasant Hill | Registered: Jan 2003
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Copello
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Member # 1534
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posted
its fun listening to you all because you all have different symptoms so your chasing different problems with different solutions.......
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91 GT
73 RS Camaro
Posts: 1309 | From: San Mateo | Registered: Jul 2002
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Copello
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Member # 1534
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posted
if your egr isn't hooked up and your car runs bad because of it your egr is fucked up, lots of surging problems and dying are from cracked lower intake gaskets, check for vacuum if its low spray carb or brake cleaner around the intake where it bolts to the head. if your car hesitated while your driving really bad its usually the maf sensor.
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91 GT
73 RS Camaro
Posts: 1309 | From: San Mateo | Registered: Jul 2002
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BlackDrop50
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Member # 1715
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posted
Ok well I had the valvecover gasket replaced so no more oil leak, and oil pressure is up more.
I am replacing the fuel filter tomorrow if that doesn't help it I will be looking at the TB and fuel pump.
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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XR1stang
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Member # 2248
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posted
5.0#3 88'conv - well I have some of the same symptoms that he's talking about, especially the wild idle when either cold or really hot. I'm not running an EGR, but the funny thing is I had these same problems WITH the EGR hooked up. I have replaced the O2 sensors because I was getting a computer code on them... of course the general consensus on my car is it's the cam/computer combo that's causing the problems.
I need a chip burned anyway so I hope that will fix it. Maybe I can get the chip to turn off the EGR code error so the Check Engine light will go off ![[Wink]](wink.gif)
XR1stang
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I used to hate computers until the server went down on me...
Posts: 342 | From: San Francisco | Registered: Dec 2002
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chosen1
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Member # 1906
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posted
quote:
Originally posted by 5.0#3 88'conv:
if your egr isn't hooked up and your car runs bad because of it your egr is fucked up, lots of surging problems and dying are from cracked lower intake gaskets, check for vacuum if its low spray carb or brake cleaner around the intake where it bolts to the head. if your car hesitated while your driving really bad its usually the maf sensor.
john...i tried all the simple things before i bought anything of those parts i mentione; vacuum leak tests, code scanned it,etc etc etc. i replaced the egr because it "supposedly" was out of range. i took it to the ford people and paid the diagnostic fee -they said nothing seemed wrong except for the egr. it was pretty annoying sitting at a light and then my idle rising out of nowhere...pretty embarrassing. i should have had you look at it first.
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1967 Fastback. Should go 10's -but doesn't
1993 Cobra
2003 Suzuki SVS
1966 Coupe -For Sale
Posts: 2205 | Registered: Sep 2002
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