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Limp mode?

Tiny
JOHNJONES556
  • MEMBER
  • 1995 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
I replaced shift solenoid, TPS, distributor, and still at 2,000 RPMs and not going faster than 20 MPH I'm just trying to figure the cause and fix it.
Saturday, November 2nd, 2024 AT 9:08 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Hi,

This can be a few different things. If you have the vehicle in park, can you rev it past 2,000 RPMs? Also, are you sure the catalytic converter isn't plugged?

Look through this link and let me know if anything mirrors your experience:

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

Have you checked to see if there are diagnostic trouble codes stored? If you haven't checked, I recommend doing so.

Let me know.

Joe
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Saturday, November 2nd, 2024 AT 10:07 PM
Tiny
JOHNJONES556
  • MEMBER
  • 5 POSTS
In it does fine but there's it will still do it in park but not often. I can't check it even though it's obd1 but it has an obd2 port.
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Saturday, November 2nd, 2024 AT 10:32 PM
Tiny
JOHNJONES556
  • MEMBER
  • 5 POSTS
In park.
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Saturday, November 2nd, 2024 AT 10:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,356 POSTS
Okay, so is the transmission not shifting gears or does the engine just have low power? What codes did you get, and did you check the catalytic converter?
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Monday, November 4th, 2024 AT 8:43 AM
Tiny
JOHNJONES556
  • MEMBER
  • 5 POSTS
Loss of power won't shift out of first and I cannot get the codes due to OBD2 port OBD1 system.
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Monday, November 4th, 2024 AT 8:46 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,356 POSTS
Okay, let's get the codes by doing an OBD1 code gather, this guide will show you how:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Please go over this guide and get back to us.
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Monday, November 4th, 2024 AT 10:23 AM

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