Hey Guys

Once again i need some help. Last night my z28 started running real bad and started loosing power the temp went up then it really lost power .I looked under the hood and sence it was dark i seen both exhaust manifolds cherry red. I just put new heads on the car 3 weeks ago and it been running fine but i did notice a smeel like gas at the back of the car. last night was the longest run i put on the car 200miles to nashville now this happened. Could it be the catalytic converter clogged up and could that be the gas smell also?


Thanks for any advise

Ron

 

sounds like a catalytic converter problem to me, only two reasons your manifolds would glow red would be a timing problem or a clogged cat, and the exhaust smell would lead me to think its the cat thats giving you trouble

 

I'll second what he^ said, I had the same thing happen to me before. All it took was a long screwdriver and a hammer to clean the cat out and it ran fine after that.

 

its offical the Catalytic converter is bad. Now they want 139 labor and 300 to cut the old one off and weld a new one on or 540 total for one that has the ypipies on it. What is the best thing to do ? what is the best brand?

 

you could get a 3" universal catco or carsound cat on ebay for like 60 bucks, and then have them weld it in there. i dont see any reason to drop 540 bucks on a cat install personally

 

forget paying for that!!! just unbolt the exhaust at the cat, get a metal bar like a crow bar, or sumthin and beat the insides of the cat out!

 

Have a shop put in an ORP, 40 bucks, plus about 7-10hp.

 

Just remove it and put in an 02 sim. Thats what I did when one of mine clogged.

 

single cat cant just use an o2 sim, thats only for dual cat cars with a second set of o2's after the cats. although i dont think it throws a code if the cat isnt there

 

Single cat cars only have 2 pre-cat O2's, one for each bank. Removing the cat has no effect on the operation of the engine, other than increased hydrocarbons and a few extra HP.

 

thanks guys Im having the inside of the cat cleaned out. And your right i only have 2 o2s before the cat.

 

I thought OBD-1 cars had a single 02 behind the cat?