Main IndexAuto Repair Home Search Posts SEARCH
Who's Online WHO'S
Log in LOG

Search Auto Parts

Need your expert opinions

  Email This Post

New User

Aug 23, 2019, 7:44 PM

Post #1 of 3 (477 views)
Need your expert opinions Sign In

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.


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.

(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 (471 views)
Re: Need your expert opinions Sign In

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


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.


Aug 25, 2019, 8:15 AM

Post #3 of 3 (446 views)
Re: Need your expert opinions Sign In

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

  Email This Post

Feed Button

Search for (options) Privacy Sitemap