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Author
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Topic: Fox Body Problem....Car surging or Jerking?
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89SIDWAZGT
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Member # 1502
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posted
 
 
Hey everyone I was just wondering if anyone has ever had the problem I am having, when I'm driving
at cruising speeds it feels like my car is jerking or surging? It's a weird feeling like maybe the fuel is geting cut of or something? I have no Idea what it could be, can anyone offer any suggestions??? Thanks!
Posts: 239 | From: South San Jose | Registered: Jul 2002
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Gear Head
JARED
Member # 779
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posted
First do a full complete tune up including the fuel filter, then let us know if that helped. ![[patriot]](graemlins/patriot.gif)
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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CobramanPhil
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Member # 2170
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posted
Definitely do the tuneup first. I would first look at the plug wires first...
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2013 Shelby GT500
2011 Porsche 911 TurboS/AWD
2014 GSXR750
2002 GSXR750 Track Beater Bike
2016 Explorer Unlimted
Posts: 1016 | From: California, Bay Area | Registered: Dec 2002
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Drift-GT
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Member # 762
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posted
Tune up is a good place to start but if it is jerking under low load (slight throttle movement) it is probably the TPS (Throttle Position Sensor). Good luck ![[Smile]](smile.gif)
[ December 11, 2002, 10:33 AM: Message edited by: Drift-GT ]
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- 1965 GT “K” code Mustang, RIP
- 2002 Silver GT 5 speed
- 2004 Kawasaki ZX-10R
Posts: 552 | From: Freakmont, CA U.S. of A | Registered: Jan 2002
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99gt-UJSTLST
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Member # 584
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posted
yea definately a tune up would be good thing to do gas filer, cap and rotor see how they look
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Elapid
GOROBGO
Member # 50
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posted
how does it run at WOT?
the computer uses all the sensors to control mixture at part throttle, only the mass air readings at WOT, this can help to isolate your problem.
good luck!
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98 Cobra
83 Notch rolling chassis - fs
Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000
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Gear Head
JARED
Member # 779
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posted
I would also try to run some injector cleaner through it.
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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89SIDWAZGT
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Member # 1502
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posted
THANKS FOR ALL OF THE FEEDBACK, IT'S A BRANDNEW SHORTBLOCK, SO THE PLUGS, CAP, ROTOR IS ALL NEW THE ONLY THING I DIDN'T CHANGE WAS THE PLUG WIRES. I AM RUNNING AN E CAM ALSO. THE CAR ACTS FINE AT FULL THROTTLE, BUT ALSO MY CHECK ENGINE LIGHT COMES ON INTERMITTENLY? I'M NEW TO THE FIVEO SCENE SO ANY THING HELPS, I REALLY APPRECIATE IT!
Posts: 239 | From: South San Jose | Registered: Jul 2002
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Stimson
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Member # 51
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posted
Pull the codes from the computer and see what it's complaining about. If it runs fine at WOT, chances are the spark plug wires are fine. You have a good MAF that is matched to your injector size correct?
Posts: 2373 | Registered: Jun 2000
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UNLUCKIER
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Member # 435
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posted
It sounds like to me you have a B-cam installed.. Mine is a bucking bitch sometimes and it is only around 2000rpms... That I have this Prob... My check engine light flashes on and off to but I think it is due to my leaky exhaust...
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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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hidnn.o.s.
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Member # 1219
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posted
If it is at low RPM's only I would suggest the cam as being the problem. Good luck.
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R.I.P. Willie G. You are missed on this forum
Posts: 15950 | Registered: Apr 2002
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Gear Head
JARED
Member # 779
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posted
quote:
Originally posted by IKE:
It sounds like to me you have a B-cam installed.. Mine is a bucking bitch sometimes and it is only around 2000rpms... That I have this Prob... My check engine light flashes on and off to but I think it is due to my leaky exhaust...
How did the b cam work out for you considering you have the stock stall?
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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UNLUCKIER
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Member # 435
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posted
It killes the low end torque some... But you gain it back in th high end.. My best 60ft is 2.16 and that was on street tires.. It really does need a stall to be a very efective cam.. I'm living proof!! Oh well my 5 speed is in the mail!!!! ![[dance]](graemlins/dance.gif) ![[Big Grin]](biggrin.gif)
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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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stitch
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Member # 1522
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posted
I would check the plug wires I was having similar problems. One of plug wires fell on the header and damn near burnt in two. ![[Eek!]](eek.gif)
[ December 12, 2002, 05:41 PM: Message edited by: unfknblvbl89 ]
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SOLD AS OF SEPT 19TH 2003
Posts: 1187 | From: Sunny SoCal | Registered: Jul 2002
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
I know what the problem is.
I just had this EXACT same thing happen to my car. Crappy cuising great at WOT. After having my nieghbor bring home his Snap On code scanner we found out that one of my o2 sensors wasn't getting any type of good reading, and the other was not responding at all.
I replaced them and everything is perfictly normal again. Don't beat around the bush, replace them.
BTW, the ones that I had go bad where not that old, but still were defective.
[ December 12, 2002, 08:16 PM: Message edited by: Yellow94GT ]
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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