weird issue

tweety_5150 · January 19th, 2011, 03:14 AM

so i thought i had a misfire for a couple months i tried everything but now im thinking it might be something else im including a video it might help. im thinking that it might be the fuel pump going bad. by the way this happens randomly and it stops after about 10 or 15 mins but i feel the car jerk a little when hit the accelerator

i dont know if this might contribute but the passenger side valve cover leaks at the bottom of the oil fill tube

http://www.youtube.com/watch?v=to5saR3r-3w

http://www.youtube.com/watch?v=YQDP9JR82JI

j_k_aktion · January 19th, 2011, 04:30 AM

this could be a number of things, fuel, grounds, sensors, etc. but when i had hesitation in acceleration it was due to a bad spark plug. could be that simple or it could be worse. any thrown codes?

Shaun03GT · January 19th, 2011, 07:04 AM

Could be a fuel filter. Could be plugs or COPs. I would start buy changing your fuel filter, air filter, spark plugs. General shit. While you have the COP's off, inspect them for cracks

GotMuscle · January 19th, 2011, 09:22 AM

Like shaun said start with general maintanance you dont want to replace a fuel pump and find out your spark plug was missing an Electrode. So if you have a garage just pull them out make sure that they are in good condition if not replace as needed and the fuel filter as well. Our fuel filter requires a special tool to push the clips in to take it off. Good luck with ya problem though

Mustangfamily · January 19th, 2011, 10:02 AM

Originally Posted by j_k_aktion

this could be a number of things, fuel, grounds, sensors, etc. but when i had hesitation in acceleration it was due to a bad spark plug. could be that simple or it could be worse. any thrown codes?

You may be right. This summer I had the same hesitation in my acceleration, primarily when I would try some spirited acceleration. Also, I did not have any codes. I decided to try the cheap route first and work from there, so I replaced my spark plugs. That solved the problem for me. Hope you find out your issue and that it's cheap.

tweety_5150 · January 19th, 2011, 12:38 PM

well over the last couple months i have changed the injectors the COPS the spark plugs air filter fuel filter all the general maintenance but it still keeps on happening.

every once in a while i do get a code for misfire on cylinder 3. but when this is happening it shakes the car really bad and if it happens and i go over 30mph it stops until i go slower.

tweety_5150 · January 22nd, 2011, 03:07 PM

Bump any one have an idea by the way it had a compression test and leak down test done and the mechanic said the motor was strong.

January 19th, 2011, 07:04 AM	#3
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,447 iTrader: 12 reviews	Could be a fuel filter. Could be plugs or COPs. I would start buy changing your fuel filter, air filter, spark plugs. General shit. While you have the COP's off, inspect them for cracks __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

January 19th, 2011, 09:22 AM	#4
GotMuscle Regular 01 Mustang GT Join Date: Sep 2010 Location: Chicago Posts: 50 iTrader: 0 reviews	Like shaun said start with general maintanance you dont want to replace a fuel pump and find out your spark plug was missing an Electrode. So if you have a garage just pull them out make sure that they are in good condition if not replace as needed and the fuel filter as well. Our fuel filter requires a special tool to push the clips in to take it off. Good luck with ya problem though __________________ BBK CAI, Ford GT Fuel Pump, Ford RAcing Fuel Rail, Ford Lightning MAF, 4.10's DIablo Tuned Mac OR H-pipe, Mac Cat-Back, Lil Purple Go-Fast Bottle

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January 19th, 2011, 04:30 AM	#2
j_k_aktion Newbie 2003 Mach 1 Join Date: Mar 2010 Location: New York, NY Posts: 25 iTrader: 0 reviews	this could be a number of things, fuel, grounds, sensors, etc. but when i had hesitation in acceleration it was due to a bad spark plug. could be that simple or it could be worse. any thrown codes?

January 19th, 2011, 12:38 PM	#6
tweety_5150 Enthusiast 2000 GT Convertible Join Date: Apr 2010 Location: Bay Area Cali Posts: 676 iTrader: 1 reviews	well over the last couple months i have changed the injectors the COPS the spark plugs air filter fuel filter all the general maintenance but it still keeps on happening. every once in a while i do get a code for misfire on cylinder 3. but when this is happening it shakes the car really bad and if it happens and i go over 30mph it stops until i go slower.

January 22nd, 2011, 03:07 PM	#7
tweety_5150 Enthusiast 2000 GT Convertible Join Date: Apr 2010 Location: Bay Area Cali Posts: 676 iTrader: 1 reviews	Bump any one have an idea by the way it had a compression test and leak down test done and the mechanic said the motor was strong.

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