Need your expert opinions - Transmission Problems


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Auto Repair Home>> Automotive Repair>> Transmission Problems

the_0utsider1
New User

Aug 23, 2019, 7:44 PM

Post #1 of 3 (1910 views)

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I dug myself a big hole in getting a used 05 Trailblazer.Upon fixing the major problem, the mechanic says it sounds like the engine is on its last leg. It won't do over 35 right now- a clogged cat is part of the problem.
Being it shifts to second gear and cruise on flat road at a decent rpm, I press the pedal and it revs up to 4K rpm with no pickup. The mechanic says it is because all the energy goes to fight the clogged exhaust.

-SO-

it shifts gear 1 to 2 fine(i don't hear any funny noises. Is there any way i can confirm the trans is fine? I don't want to replace the motor only to find a bad trans.Just cut off the cat off and drive it? I say this because with my engine problem, I don't know if it will put out enough power to get to 40 or 50.

btw, no error codes come up.
TIA.

(This post was edited by the_0utsider1 on Aug 23, 2019, 7:45 PM)

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 23, 2019, 7:57 PM

Post #2 of 3 (1904 views)

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That does not sound like the symptoms of a plugged Cat at all. You need to get a second opinion on that.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

gsferraro
Veteran

Aug 25, 2019, 8:15 AM

Post #3 of 3 (1879 views)

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Hello,
Just to let you know, loosing 3rd gear is a very common problem with this transmission, it will normally shift 1st to 2nd and neutralize when it goes to 3rd. Gary

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