Burnt out Catalytic Converter - Page 2

pnoye2 · 07-24-08, 01:32 PM

Quote:

Originally Posted by nazG1

So how do i find out whats causing the blockage?

Your initial post confirmed that naz and some possible root causes was noted on my first reply

bfarrell01 · 07-24-08, 06:22 PM

Yeah I have a high flow cat as well, its hollow. Hahaha!! God I love not having emmisions tests.

Ophidian · 07-24-08, 07:16 PM

I just had my car pass emissions today...YAY! G'luck OP!

Ken · 07-25-08, 05:31 AM

Quote:

Originally Posted by bfarrell01

Yeah I have a high flow cat as well, its hollow. Hahaha!! God I love not having emmisions tests.

meh... just gutting a cat just ruins the velocity of the flow. its much more effective having a straight pipe that is the diameter of the piping. a hollowed out cat leaves too much space in the middle of the exhaust system which will cause turbulence.

btw... all aftermarket cats are high flow. I dare anyone to prove me wrong.

to the OP: get your cat replaced again. If its a defective cat, then you got lucky. otherwise I suggest you do some crazy maintenance after you get a new one.

stephen · 07-25-08, 01:52 PM

Quote:

Originally Posted by nazG1

Hey guys just came back from the mechanic, because i was having acceleration issues, they checked my catalytic converter and the inside was completely burnt out..... the guy told me i would have to take it to a dealer, does anyone here know why that would happen, and what other things could be causing my acceleration problems, especially when coming of a stop, around 30-40mph, the only way i can accelerate smoothly is by doing it extremely slowly. can anyone help?

The melting of the catalyst is probably caused by running too rich. When the mixture is too rich hydrocarbons are being in the converter and get it too hot. I would suggest new O2 sensors.

As to replacing it, Walker makes a converter for ~$150 that will bolt up. Replacing it at home is possible by the approach suggested in another post. Unbolt the exhaust system and drag it out from under the car. The six nuts and bolts that connect the converter to the exhaust system will be all rusted up and difficult to remove. I split the nuts with a chisel and hammer and then they would come apart. The Walker converter comes with one gasket and the other one is a sealing ring which you can obtain from a parts store. Felpro makes one.

stephen · 07-25-08, 02:19 PM

On the Walker website the part numbers for a 90 Legend coupe are:

15617 converter
31354 gasket

You need one 31354 and the other gasket comes with the converter.

You need to check that these are the correct part numbers for your application.

nazG1 · 07-31-08, 11:40 PM

Ok changed the spark plugs and wires, the acceleration is almost back to how i remember, now imma go back and get a new cat, and hopefully she will be back to her old self

l4zy415 · 08-01-08, 12:00 AM

That's good news. What kind of spark plugs did you get?

07-24-08, 07:16 PM	#18 (permalink)
Ophidian Registered User Join Date: Apr 2007 Location: Everett, WA. USA Posts: 1,094 Car 1: 90 LS Coupe 5speed iTrader: (9)	I just had my car pass emissions today...YAY! G'luck OP! __________________ 35% Tint New Paint MA 6.5" front Cold Air Intake H.O. Alternator Eclipse AVN6610 JL Audio A4300 amp Focal Access 6x9's rear Stromung muffler from GB Clifford Matrix 50.5x alarm Waiting to be installed: Front strut tower bar 2 Orion HCCA 2100 amps 2 12" Cadence Daytona competition subs

07-31-08, 11:40 PM	#22 (permalink)
nazG1 Registered User Join Date: Mar 2004 Location: Michigan Posts: 75 Car 1: 1990 Black coupe L iTrader: (0)	Ok changed the spark plugs and wires, the acceleration is almost back to how i remember, now imma go back and get a new cat, and hopefully she will be back to her old self __________________ I am a Legend.

08-01-08, 12:00 AM	#23 (permalink)
l4zy415 FRISCO LEGEND BABY!!!! Join Date: Jun 2007 Location: Frisco Cali Posts: 4,808 Car 1: 1988 Acura Legend Sedan iTrader: (6)	That's good news. What kind of spark plugs did you get? __________________ ______________________________ 18" Limited 341 Chrome Rims/\Matador Red Paint/\Weapon R - Secret Weapon Intake/\LED Bright White Dash Lights/Floor/\Kenwood KDC-X590 Excelon Mp3 Deck/\Ford Taurus Coin/Cup Holder/\2 12" Kickers/\1200 Watt Sony XM-2200GTX 2-Channel Xplod Amp/\2 Rockford Fosgate Capacitors/\Power Acoustic Capacitor/\Clear Rear Turn Signal/\Reverse Glow Gauges/\Swapped 88' Headlights to 89'-90'/\JDM Rear Chrome Trim/\Stromung Muffler/ Soon To Come: Rebuild Motor and 5-MT Swap

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07-24-08, 06:22 PM	#17 (permalink)
bfarrell01 Registered User Join Date: Feb 2008 Location: Anacortes, WA Posts: 247 Car 1: 1987 Acura Legend L iTrader: (0)	Yeah I have a high flow cat as well, its hollow. Hahaha!! God I love not having emmisions tests.

07-25-08, 02:19 PM	#21 (permalink)
stephen Registered User Join Date: Feb 2007 Location: Fremont, CA Posts: 390 Car 1: 1990 Acura Legend 2 Dr L Car 2: 1999 Mustang V6 iTrader: (0)	On the Walker website the part numbers for a 90 Legend coupe are: 15617 converter 31354 gasket You need one 31354 and the other gasket comes with the converter. You need to check that these are the correct part numbers for your application.

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