help!! cat converter

[aga01]

can anyone tell me if there is a quick way to test if cat converter is bad or pluged. i have a really strong fuel odor when i fist start it up and then after it has warmed up it seems to run ok, but sometimes at a stop light when i step on gas pedal it bogs down then turns off.

 

[justin's_94]

Seeming how you have a 91 which has probably never been replaced and has a fuel smell, I can almost gurantee you that it is clogged. If it is bogging you down like that, you might want to go get it replaced with a new cat or a high flow cat.

 

[mrboyle]

The problem is most likely a bad fuel pressure regulator, not a bad cat.

 

[88vert]

I agree with Mike is your CEL blinking at ya?

 

[SaleenEXP]

Originally posted by mrboyle
The problem is most likely a bad fuel pressure regulator, not a bad cat.

what he said, if it was a bad cat it would smell like rotten eggs or sulfur, my grandmothers towncar had a cat go bad and it reeked of sulfur...now they have dual magnaflows on it

 

[james t]

also, a bad cat shouldnt stink until warmed up. should be no smell at a cold start. poke the fuel rail with a pressure gauge to see where you're running- its proly to high- in other words, it needs a FPR.

 

[Defender3]

Clogged Cat

I have a '94 XLT w/155,000 miles and just had my clogged cat replaced. There was no gas or fuel smell, rather, the back pressure was excessive and coming back through the EGR valve. That then put a code in the system. I had the cat replaced and all is good now.