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[Solved] Should I replace my catalytic converter

Last Post

04/01/2023 9:51 pm

Topic starter

mr kilmer

FIRST DAYS DRVING feel lost 40% power in city 50mph. and highway 60mph up lost 50%

AFTER 5 DAYS DRIVING LITTLE IT BETTER CAN GO TO 75mph。 but cant keep in 2200 rmp in cruise control

it automatic constanly go to 3000 rmp or even higher 4000 rpm to keep the 75mph speed

new air fiter . no engine light on. no misfire change oil on time every5000 miles spark plug changed couple days ago.

tranny fluid every 50k miles.

JUST BRING TO SHOP TODAY MECHINAL DRIVE IT SAID CATALYTIC CONVERTER IS CLOGGED.

so do I NEED TO CHANGE FRONT ONE OR BOTH FRONT OR BACK

OR GIVE IT A TRY LACQUER THINNER OR USE SHELL GAS REGULAR OR SHELL SUPER FOR COUPLE MONTH WILL IT HELP.

2014 camry i4

154000 miles now

no code, engine light not on

fisher brown

(@fisher-brown)

Estimable Member

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3 Answers

04/01/2023 10:33 pm

Posted by: @fisher-brown

MECHINAL DRIVE IT SAID CATALYTIC CONVERTER IS CLOGGED.

so do I NEED TO CHANGE FRONT ONE OR BOTH FRONT OR BACK

The clogged ones. That was his job to tell you.

Posted by: @fisher-brown

OR GIVE IT A TRY LACQUER THINNER OR USE SHELL GAS REGULAR OR SHELL SUPER FOR COUPLE MONTH WILL IT HELP.

No. You cannot unclog a cat with fuel additives.

Please turn off your CAPS LOCK. Thank you.

MountainManJoe

(@mmj)

Illustrious Member

| 11113Posts
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tried not working laquer thinner

By fisher brown Topic starter 25/01/2023 9:44 am

change both catalytic converter or just top one first exhaust manifold converter

By fisher brown Topic starter 25/01/2023 9:46 am

the clogged one. Use a backpressure tester.

By MountainManJoe 25/01/2023 8:35 pm

fixed problem 300$ labor front exhaust manifold catalytic converter change. didnt changed botton one . like a new car now when take off thx

By fisher brown Topic starter 26/01/2023 7:17 pm

Thanks for the update!

By InThrustWeTrust 26/01/2023 9:04 pm

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05/01/2023 5:13 am

First, get a second opinion.

If the cat is cligged up and the mileage is legit, there is something wrong with the engine. You should fix it first then think about changing the cat, otherwise, it will ruin the new cat again.

yaser

(@yaser)

Illustrious Member

| 10426Posts
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yes thx burn 500ml every 1000 miles. i changed oil ontime every 5000 miles

By fisher brown Topic starter 05/01/2023 10:20 pm

It worth a shot to change the PCV valve and run some engine oil cleaner. If you are lucky, you may have a stuck piston rings.

By yaser 06/01/2023 7:20 am

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26/01/2023 9:33 pm

Using lacquer thinner in your fuel can destroy your fuel system. I hope putting on a new CAT helps but you have to find out what upstream caused the CAT to fail. otherwise, your new and very expensive CAT will soon fail again, like @yaser said.