Catalyst converter‘s Turning red hot!

2020 PP2 5.0 · Mar 31, 2020

What’s going on guys! I’m currently restoring a 1994 mustang GT 5.0! The car has not been operated in eight years it was Only started time to time. Purchased the vehicle from a relative. He claims the reason he stopped driving it was because he was having loss of power when accelerating. I changed the fuel pump drained the old gas and got it running. Car responded great. Shortly after the car would not start easy, would run sluggish and the cats turned red hot! I was thinking my cats were clogged or maybe the injectors? Any help or advice would be appreciated

all I’ve done to the car as of now
Engine coolant,Thermostat,Fuel filter
Fuel pump,Air filter and battery. Will be changing the spark pugs and oil this weekend hopefully!

Adieu · Mar 31, 2020

Welcome to the site, moved your thread to the correct forum from "Other Auto Tech" (that one's a black hole from which your post would've never seen light).

2020 PP2 5.0 · Mar 31, 2020

74stang2togo said:
Welcome to the site, moved your thread to the correct forum from "Other Auto Tech" (that one's a black hole from which your post would've never seen light).

Thanks for pointing me in the right direction!

General karthief · Mar 31, 2020

Is the emissions stuff still hooked up?
I would disconnect the pipes at the headers and see if it runs better.
Also make sure your fuel pressure is good.
Have you run the codes?

2020 PP2 5.0 · Apr 1, 2020

General karthief said:
Is the emissions stuff still hooked up?
I would disconnect the pipes at the headers and see if it runs better.
Also make sure your fuel pressure is good.
Have you run the codes?

Emissions still hooked up. No codes ran yet also no check engine light! I will try disconnecting the pipes at the headers, I’ve been getting that a lot from a few people! Thanks

General karthief · Apr 1, 2020

Run the codes first, you emission stuff may not be functioning correctly. Post the codes. You could have codes without the cel.

revhead347 · Apr 1, 2020

Weather the emissions stuff is functioning or not is not likely to be the problem. It not functioning would make the cat run cold, not hot. Either the catalytic converter is clogged, or the car is running pig rich.

Kurt

2020 PP2 5.0 · Apr 1, 2020

General karthief said:
Run the codes first, you emission stuff may not be functioning correctly. Post the codes. You could have codes without the cel.

Will do thanks!

2020 PP2 5.0 · Apr 1, 2020

revhead347 said:
Weather the emissions stuff is functioning or not is not likely to be the problem. It not functioning would make the cat run cold, not hot. Either the catalytic converter is clogged, or the car is running pig rich.

Kurt

I noticed a little bit of black smoke coming out the exhaust. so I put my hand up to it and whenever I smelled my hand I got a slight gasoline smell.

Olivethefet · Apr 1, 2020

Could a dirty mass air flow sensor cause the car to run rich? It's easy to clean.

2020 PP2 5.0 · Apr 1, 2020

Olivethefet said:
Could a dirty mass air flow sensor cause the car to run rich? It's easy to clean.

Something specific I should clean it with?!

Olivethefet · Apr 1, 2020

2020 PP2 5.0 said:
Something specific I should clean it with?!

You can get cleaner at any auto parts store or order it to be delivered.

CRC Industries Clean-R-Carb Carburetor Cleaner 50 State 1X12OZ - Walmart.com

Buy CRC Industries Clean-R-Carb Carburetor Cleaner 50 State 1X12OZ at Walmart.com

www.walmart.com

2020 PP2 5.0 · Apr 1, 2020

revhead347 · Apr 1, 2020

2020 PP2 5.0 said:
I noticed a little bit of black smoke coming out the exhaust. so I put my hand up to it and whenever I smelled my hand I got a slight gasoline smell.

I had something like that before. The car ran like hell. It didn't have catalytic converters, but it was getting hot enough to make the headers glow. In my case it was a bad wire on an O2 sensor. I would pull a spark plug and look at the plug.

Kurt

stroken94 · Apr 1, 2020

I had this happened on my 94, 331 Stroker, the stock cats turned bright red...usually means the engine is timing is off (missing), or to much fuel going through, regardless, it usually means your cats our toast, I installed some high flow Magnaflow cats with the metallic substrate, and my cats are working fine without the red glow. Good luck

2020 PP2 5.0 · Apr 1, 2020

stroken94 said:
I had this happened on my 94, 331 Stroker, the stock cats turned bright red...usually means the engine is timing is off (missing), or to much fuel going through, regardless, it usually means your cats our toast, I installed some high flow Magnaflow cats with the metallic substrate, and my cats are working fine without the red glow. Good luck

Thanks for the advice I will be replacing the cats and exhaust, looking into the magnaflows!

2020 PP2 5.0 · Apr 1, 2020

revhead347 said:
I had something like that before. The car ran like hell. It didn't have catalytic converters, but it was getting hot enough to make the headers glow. In my case it was a bad wire on an O2 sensor. I would pull a spark plug and look at the plug.

Kurt

I will pull them this weekend and get back!

559mat · Apr 5, 2020

Hey I had the same exact thing happen to me on my 95 gt auto it turned out the distributor was bad not the cap and rotor something inside the distributor went out took me months to figure it out cheap distributor for 94 95 is on eBay for about 35 almost guarantee that’s your problem

Catalyst converter‘s Turning red hot!

2020 PP2 5.0

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Adieu

Easy there, this ain't a dating site.

2020 PP2 5.0

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General karthief

wonder how much it would cost to ship you a pair

2020 PP2 5.0

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General karthief

wonder how much it would cost to ship you a pair

revhead347

Apparently my ex-husband made that mistake.

2020 PP2 5.0

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2020 PP2 5.0

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Olivethefet

I will own your nuts! LOL

2020 PP2 5.0

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Olivethefet

I will own your nuts! LOL

CRC Industries Clean-R-Carb Carburetor Cleaner 50 State 1X12OZ - Walmart.com

2020 PP2 5.0

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revhead347

Apparently my ex-husband made that mistake.

stroken94

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559mat

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Catalyst converter‘s Turning red hot!

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