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Old 10-31-2002, 03:06 PM   #1
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Bad Spark Plug wires??

Sup guys,


I have had my plug wires on my car for about 32,000 miles (mostly highway) and i've been wondering if they need to be replaced They guy i bought the car from had these on when i bought it so they may have more miles then 32,000
My question is do they need to replaced?
What are the symptoms of plug wires going bad?

The reason im seriously wondering if they're bad is because right now i have 150 miles on the tripometer and my fuel needle is on the second mark before E!!!!!
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MSD Coil
193,000 miles and still Buckin, Surging, Hesitating, Putting, and lets not forget Pingin.
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Old 10-31-2002, 03:32 PM   #2
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Why not just go ahead and replace plugs, wires, cap and rotor button? When my last set of wires went bad I could have someone key the car over without starting it and watch the fireworks.
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Old 10-31-2002, 05:40 PM   #3
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start the car at night and see if thier is spark jumping out of them
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Old 10-31-2002, 11:05 PM   #4
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man just go ahead and change them like calvin said, i waited so long on changing mine when i finnally did give her a tune up it felt like a new car
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Old 10-31-2002, 11:05 PM   #5
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I don't know how many miles I've put on my current wires, but I know it's a lot. I posted the following on the Google/USENET Mustang newsgroup. Maybe it would give you some ideas.


From: HELMUT RONER (helmutroner@aol.com)
Subject: Tested Spark Plug Wires
This is the only article in this thread
View: Original Format
Newsgroups: rec.autos.makers.ford.mustang
Date: 2002-10-28 17:23:00 PST


Did this for the first time tonight. IIRC, I read that there should be no less
than 500 ohms per foot when testing plug wires. I'm running ACCEL 8mm yellow
wires on my car that are about 2½ to 3 years old now. I gathered the following
readings from my wires (warm after driving) with the multimeter I have.

Coil wire - 9.7K ohms @ 1½ ft. long
Plug wire # 1 - 7.95 to 7.98K ohms
#2 - 10.73K ohms
#3 - 11.50K ohms
#4 - 12K ohms
#5 - 7.5K ohms @ 1½ ft. long (at this point it occured to me to remember the
length of the wires).
#6 - 9.16K ohms @ 2ft. long
#7 - 11.34K ohms @ 2¼ ft.
#8 - 10.88K ohms @ 2¼ ft.

I'd say for 2½ to 3 years of driving the piss out of this car these wires are
pretty darn good ones for a stock Mustang. Just for preventive measure I'm
going to go ahead and replace these soon with a fresh set so not have to put up
with any misses that may soon occur.
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Old 11-01-2002, 12:11 AM   #6
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Yah im going to have to go ahead and change them mainly because one of them (the second from the back passanger side) was burned from the headers and last time i checked it arced.


Also what symptoms would bad spark plug wires cause?

Example when i goose the throttle and it gets high in rpms 3500+ i can feel the car miss? i dont hear a pop but it doesnt feel right hard to explain but i think i can blame these old wires

thanks guys
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1992 Mustang GT 5.0
BBk Shorties Equal Length
BBK Underdrive Pulleys
BBK 3/4 in Phenolic Intake Spacer
BBK 65 MM T/B
BBK Cold Air Intake
Mac O/R H Pipe
Dual FlowMasters
Walbro 155 LPH fuel Pump
Kirban Adjustable Fuel Pressure Regulator @ 38Psi
3G Alternator Installed
MSD Coil
193,000 miles and still Buckin, Surging, Hesitating, Putting, and lets not forget Pingin.
On The way: Trick Flow Intake!!
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Old 11-01-2002, 01:18 AM   #7
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could fix your miss.... one way to find out.


Wires do last a long!!1 time though. My car hit 81,000 a few days ago... wires still say "1992" on them, yup stock wires car runs perfectly so i haven't felt a need to replace them. This weekend though, they shall be replaced just to see if i notice a difference.
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