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96 breeze 2.4 l cat convertor plugged? rough idle - wont accelerate beyond fast idle and stalls

Idles rough and wont accelerate past fast idle. can I bypass cat. converter? I think is is plugged.

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  • trevor davies Oct 29, 2012

    error code 12-31-52

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  • 666 Answers

You can add whats known as a "Test Pipe" To verifie that is the issue, Or simply disconnect the cat and drive it around the block. Although you can bypass it, Its NOT reccomended you do so. Hope this helps..

Posted on Oct 29, 2012

  • trevor davies Nov 01, 2012

    I will try that - thks.

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6 Suggested Answers

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Posted on Jan 02, 2017

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eitan
  • 291 Answers

SOURCE: Rough idle

Jeep has been having a problem with this. i take it u have a 4.7L or a 3.7L. when the when to fix this problem they should of replaced all the valves (intake and exhaust). theres a tsb on this and the dealer can look it up. even if you paid for the service they will fix it for free cuz it wasn't fixed the first time. take it back to the them and tell the to read the tsb and fix it right.

Posted on May 15, 2008

maklean
  • 1665 Answers

SOURCE: Rough idle after new plugs and fluctuating RPM's

Check that you have installed correct type of spark plugs and wires are well fitted. SPARK PLUG 3.5 V6 Type Champion RC10PYP4 Plug gap 1.0-1.1 mm (0.039-0.043 in.)

Posted on Jun 03, 2008

WildBill49
  • 97 Answers

SOURCE: 1989 dodge Ramcharger stalls

Hi Monkeypaint!
I assume you have power brakes and I gather that it idles properly at times, but dies when the brakes are applied. This sound like a leaking power brake assist vacuum line or diaphram. You can verify this by locating the big vacuum hose connecting the intake manifold to the assist diaphram. This will be about an inch in diameter connected to the round item behind the brake master cylinder next to the firewall.

  1. Disconnect the line at the intake manifold end, and plug the vacuum port on the manifold with a tapered rubber stopper or cap.
  2. Being aware that you now do NOT have power assist to the brakes (requiring CONSIDERABLY more pedal pressure to stop!!!), see if the problem goes away. If it does, you have narrowed it down to the assist diaphram or the hose. If it still persists, it is an engine tuning/control issue, not related to brakes.
  3. Do determine whether it is the vacuum hose or the cannister, remove the previously installed cap/plug, reinstall the hose to the intake manifold, disconnect it from the diaphram and plug/cap the hose at that end. Repeat step three... if the problem returns, the hose is leaking and should be replaced... If the problem still goes away, the Power Brake Assist Diaphram Cannister is leaking excessively and should be replaced.
  • ***ALSO*** Any other vacuum lines leaking can lower the manifold vacuum to a threshold level where the load of power brake assist actuation crosses the line for adequate vacuum to idle*** So check all vacuum lines underhood, looking for a pronounced hissing at vacuum leaks. A manifold vacuum gauge is a relatively inexpensive diagnostic tool that could also be useful.
Well, hope this helps, and good luck! Don't forget to rate this answer!
Thanks!
-WB

Posted on Jun 15, 2008

  • 32 Answers

SOURCE: 98 Chevy 5.0 fast idle

try cleaning the throttle plate with the right cleaner . from a auto parts store.

Posted on Mar 02, 2009

teezay731
  • 1 Answer

SOURCE: rough idle stalls at low rpm's

check your transmission fluid,the motor will stall when fluid is low

Posted on Mar 24, 2009

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