1990 Cat removed

Post information about exhaust systems. Either purchased or custom made
indyyellow
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1990 Cat removed

Postby indyyellow » Mon Apr 25, 2011 7:42 pm

Does this car have a 02 sensor somehwere on the exhaust? The car is a bit fummy, I am wondering if a 02 was not handled properly wonce cat is removed it car is running funky cause it is not getting a good reading. I am getting no CEL.


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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heavywoody
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Re: 1990 Cat removed

Postby heavywoody » Mon Apr 25, 2011 7:49 pm

O2 sensor is in the rear manifold, just above the downpipe.


Geoff
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indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Mon Apr 25, 2011 8:32 pm

ok. Any reason the car would be running I guess RICH? No dark smoke out of it just a stinky fumy exhaust.


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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Re: 1990 Cat removed

Postby heavywoody » Mon Apr 25, 2011 10:29 pm

Does it smell like gas or sulfur?

Sulfur smell points to a bad cat.

Gas (rich) could mean an injector is bad (stuck open).


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indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Tue Apr 26, 2011 9:20 am

I have not Cat, it was cut out, stright pipe put in. Smells like a old 1970's car with a out of tune carb, the smelly fumes from the tail pipe. Not a unspent gas spell. Hard to explain.


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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Re: 1990 Cat removed

Postby themixer » Tue Apr 26, 2011 9:59 am

check out my thread of rich smelly and farty I am having a similar issue.

viewtopic.php?f=8&t=5602


Things to try would be:

ICM
coilpacks
ECU
plugs
wires
IAC
EGR
Clean TB
o2 sensor
fuel injectors
fuel pressure
vacuum leaks



indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Tue Apr 26, 2011 10:02 am

why the long list, ha ha ha. Some of that I was ganna go through anyways. Just feels like I am throwing darts in the dark hoping to hit the right thing.


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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Re: 1990 Cat removed

Postby 3X00-Modified » Tue Apr 26, 2011 10:54 am

Um, if you remove the cat then yes your exhaust will smell like that from a 70's car that did not have a cat... your smelling the pollution...

I'm somewhat surprised that your asking this question since this is a direct result of removing a pollution control device. Its almost like taking off the muffler and then asking why is my car so loud?



indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Tue Apr 26, 2011 10:57 am

ha ha ha, never said I was wise. Ha ha
Did they make a specific cat for this car or jsut ask for one for a 90 Beretta?


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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Re: 1990 Cat removed

Postby 3X00-Modified » Tue Apr 26, 2011 12:34 pm

You can ask for a 90 beretta one, or you can just get a universal one of the same pipe size that you have. Any will work, but the year listing one may be more expensive due to it being application specific.

I'm glad you didn't take offence to my above post.



indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Tue Apr 26, 2011 4:00 pm

no offense taken. I can ask dumb questions at times. I thought I read somewhere that the Indy car makes had tuned sport exhaust? Maybe GT''s did also?


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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heavywoody
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Re: 1990 Cat removed

Postby heavywoody » Tue Apr 26, 2011 8:55 pm

Nope, nothing special about the exhaust...

I'd just replace the cat with a universal unit. They are always cheaper, in my experience, than a made for your car specific fit unit.


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indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Tue Apr 26, 2011 9:14 pm

k


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k

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Money pit Beretta
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Re: 1990 Cat removed

Postby Money pit Beretta » Fri Apr 29, 2011 8:33 pm

The Magnaflow universal cat will flow better than stock and costs less than a stock one. It will do a better job and last longer than a stock one from the 90's.


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indyyellow
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Re: 1990 Cat removed

Postby indyyellow » Fri Apr 29, 2011 8:37 pm

where do I find this cat you speak of, can be had online?


Tim

---2005 Magnum RT -- 116k
---1996 Ford Probe GT (V6/5sp) -- 150k (90k on motor)
---1993 Chevy Silverado Z71 -- 261k


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