Please Help-98 Blazer 4.3 -wierd tranny problems?

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Please Help-98 Blazer 4.3 -wierd tranny problems?

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Blazer Forums >> Mechanical & Maintenance >> General Tech Help >> Please Help-98 Blazer 4.3 -wierd tranny problems?

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Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/14/2006 3:21:11 PM

Zack98Blazin

Posts: 1
Joined: 8/14/2006
Status: offline

Hello to all, and thanks for helping!!!!!!

I am new at this fourm and have been searching but couldn't find anything about my problem with
the Blazer First off it is a 1998 Blazer Ls 4door 4X with a 4.3 liter and auto trans.

Any way to get to the point the vechile runs great when you drive it like a grandma,
but when you even try to accelerate to get on the interstate , or actully any time you
acclerate quick the rpms go to 3500rpm and it will not shift untill you let off the gas.
I thought it was the transmission sliping till the rpms won't go over 4000rpm when this
happens.
Oh and After two weeks of this the C.E.L come on.
anything sound familar to anyone?
thanks allot
Zack

Post #: 1

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/14/2006 3:23:10 PM

swartlkk

Posts: 14306
Joined: 5/1/2005
From: Waterloo, NY
Status: online

If the CEL is on, you really need to have the codes checked. It may help point you in the proper direction.

Do you run a K&N (or aftermarket oiled air filter)?

_____________________________

Kyle-

2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto

(in reply to Zack98Blazin)

Post #: 2

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/14/2006 7:52:03 PM

mortalum620

Posts: 26
Joined: 8/13/2006
Status: offline

I have had the same problem. Still no idea whats goin on. Sorry i cant help ya, but at least i can feel your pain

(in reply to swartlkk)

Post #: 3

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/14/2006 8:08:32 PM

1996BZR

Posts: 421
Joined: 3/5/2006
Status: offline

Is the correct transmission fluid in it to the correct amount? It might sound dumb, but some problems are caused by the simplist of things, like low fluid.

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1996 Blazer 4-door 2WD 572 V8
(just kidding, it's a 4.3 V6)

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Post #: 4

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/16/2006 6:36:50 PM

mistasmiff

Posts: 6
Joined: 8/16/2006
Status: offline

Ive got a 99 4.3 same setup. I had the same exact problem. The code it pulled (dont remember the number) ended up being "transmision short circuit B". I dont know much about trannies but its an electrical circuit component in the transmision. It should deffinately throw a code if this is the issue.

Had it replaced and everything was back to normal. Wasn't too cheap to have a shop do it. I had a lot of suspension work done at that time so i cant remember the exact cost but somewhere between 2-400.00.

(in reply to 1996BZR)

Post #: 5

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/17/2006 12:55:00 AM

Hanr3

Wheels & Tire Moderator
Posts: 3476
Joined: 5/11/2005
Status: offline

IT could also be a failing torque converter.

Did you check the tranny fluid level?
What does the tranny fluid smell like, and what color is it?

_____________________________

"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan

'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sons DD, engine swap is done.
'00 S10-Blazer 4x4x4 - My

(in reply to mistasmiff)

Post #: 6

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/29/2006 10:12:07 PM

cplca

Posts: 1
Joined: 8/29/2006
Status: offline

Could be a bad trans sensor or worned-out wire at the ECM I don't think it would be your torqk converter but could also be your EGR valve although a bad EGR would have a jerking feel. Best is to pull codes first if any and go from there.

It wouldn't be a bad idea to check the wires at the ECM, Traces of rust or burn marks on wires
would be an indication that something is or is about to go wrong in this area. I had similar problems with my Impala SS a few years ago, my trans would only shift a very hight rpm because of one faulty wires.

Please let us know what you find.

_____________________________

Chev Camaro Z28 1981 5.7L V8
Olds Cutless Supreme 1989 3.1L V6
Olds Cutless Supreme 1993 3.1L V6
Chev Impala SS 1994 5.7L V8
Pontiac Firefly 1995 1.3L 4 Cyl
Chev Blazer LT 1998 4.3L V6

(in reply to Zack98Blazin)

Post #: 7

RE: Please Help-98 Blazer 4.3 -wierd tranny problems? - 8/30/2006 3:45:05 PM

Mariongo

Posts: 7
Joined: 8/30/2006
From: San Diego
Status: offline

I had the same problem a while ago and it turn out to be a "transmission (TCI) turbine sensor solenoid" and I had it change along with the fluids and filters
And that's it. It ran me 150 bucks.

You need to have your tranny computer diagnose...

(in reply to Zack98Blazin)

Post #: 8