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Old 07-04-2011, 10:06 AM   #1
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Question 95 5.0 H0

I am wondering if I need to change out my factory cat converters? I am running non-ethanol fuel, changed sparkplugs, wires, rotor, and cap. I changed the oil to a highmileage oil as the car has 185k miles and I am still getting a speed response lag in 1st and 2nd gear with the engine light coming on for about a minute after I goose the pedal. I am not a mech. and would love any advice from someone in the know on this subject. thank you
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Old 07-04-2011, 10:26 AM   #2
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Quote:
Originally Posted by teejay196575
I am wondering if I need to change out my factory cat converters? I am running non-ethanol fuel, changed sparkplugs, wires, rotor, and cap. I changed the oil to a highmileage oil as the car has 185k miles and I am still getting a speed response lag in 1st and 2nd gear with the engine light coming on for about a minute after I goose the pedal. I am not a mech. and would love any advice from someone in the know on this subject. thank you
Does it sound like it is burping through the intake when you punch it?
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Old 07-04-2011, 02:47 PM   #3
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Re: 95 5.0 H0

Not that I hear, just sluggish, 0 to 60 takes 17 seconds, quick after 2nd gear, but my sons ford ranger v6 does it in 14 seconds, something is def off kilter here.
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Old 07-04-2011, 05:19 PM   #4
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Quote:
Originally Posted by teejay196575
Not that I hear, just sluggish, 0 to 60 takes 17 seconds, quick after 2nd gear, but my sons ford ranger v6 does it in 14 seconds, something is def off kilter here.
Did y'all swap engines?
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Old 07-04-2011, 11:12 PM   #5
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Re: 95 5.0 H0

Quote:
Originally Posted by teejay196575 View Post
I am wondering if I need to change out my factory cat converters? I am running non-ethanol fuel, changed sparkplugs, wires, rotor, and cap. I changed the oil to a highmileage oil as the car has 185k miles and I am still getting a speed response lag in 1st and 2nd gear with the engine light coming on for about a minute after I goose the pedal. I am not a mech. and would love any advice from someone in the know on this subject. thank you
I had this problem myself when I had a fuel pump going out. Have you tried replacing that yet?
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Old 07-05-2011, 07:26 PM   #6
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Re: 95 5.0 H0

I owned a 95 GT a few years ago. At 95K miles the catalytic convertors were shot. They were burned and collapsed to where they were blocking the exhaust flow. Once I removed them the car ran much better.

Something else to check and be aware of, I also owned a 70 429 CJ Torino.
It didn't run to good when I got it and a tune up didn't help much.
I had the car up on a lift and noticed that the exhaust pipes on each side had hit something which had egg shaped them.
I decide to cut them off and replace them.
That's when I found that both pipes were pinched almost completely shut.
The exhaust pipe on the car was double layer pipe and the inside layer had warped up until they were almost closed off.
You couldn't tell from outside that it was that bad.
The car ran a lot better after that was fixed.
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