Tranny ??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

86 GMG · 09-08-2005, 09:17 AM

i have an 84 lwb with 350/350c it is a used motor and tranny i kinda just threw the truck together to have a DD since finished the tranny has (for a lack of words) builds pressure somtimes and forces fluid out the dip stick tube all over the manifold i have notice in the last week it is starting to slip (maybe just low on fluid) since it is coming out. but why is it doing this is it on its way out or just need some module replaced or something? a little help and thanks in advance

**swervin ervin** · 09-08-2005, 07:14 PM

I'm no tranny expert but I would guess a bad seal somewhere on the inside is letting the pump move fluid out where it's not supposed to be. Just a WAG on my part though.

**N2TRUX** · 09-08-2005, 07:36 PM

I have seen this in extreme heat conditions caused by towing. Since you don't mention any reason for heat to be an issue, I would have to agree with Mike. It sounds like something is creating internal pressure where it's not supposed to be...

Jonboy · 09-09-2005, 08:30 AM

You really need to get it fixed ASAP or your truck will go up in flames. I had a 90 Suburban do that when the trans overheated. There was not hardly enough of the truck left to carbon-14 date when it was done.....

86 GMG · 09-09-2005, 08:40 AM

why dont i just get full coverage on it and keep driving it no not really so pretty much take it to a shop. i was just hoping to find a quick fix answer of something thanks guy i appreciate it!

86k10 · 09-09-2005, 02:05 PM

Did you check the vent to see if it is open?

86 GMG · 09-09-2005, 03:23 PM

???????vent???????? What Do You Mean And What Is The Location Of It

86 GMG · 09-09-2005, 03:24 PM

Oh Never Mind I Know What You Are Talking About Top Center I Will Try To Check If I Can Get To It

86k10 · 09-09-2005, 05:14 PM

Yeh it's towards the top on the left side.

86 GMG · 09-10-2005, 02:00 PM

thanks

a28doc · 09-11-2005, 08:40 AM

def sounds like the vent is plugged allowing pressure to build up its amazing how quick the vent can clog up cauing probs
Doc

09-08-2005, 09:17 AM	#1
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	Tranny ??? i have an 84 lwb with 350/350c it is a used motor and tranny i kinda just threw the truck together to have a DD since finished the tranny has (for a lack of words) builds pressure somtimes and forces fluid out the dip stick tube all over the manifold i have notice in the last week it is starting to slip (maybe just low on fluid) since it is coming out. but why is it doing this is it on its way out or just need some module replaced or something? a little help and thanks in advance __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-08-2005, 07:14 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I'm no tranny expert but I would guess a bad seal somewhere on the inside is letting the pump move fluid out where it's not supposed to be. Just a WAG on my part though. __________________ Mike 1985 Chevy C-10

09-08-2005, 07:36 PM	#3
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	I have seen this in extreme heat conditions caused by towing. Since you don't mention any reason for heat to be an issue, I would have to agree with Mike. It sounds like something is creating internal pressure where it's not supposed to be... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

09-09-2005, 08:30 AM	#4
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	You really need to get it fixed ASAP or your truck will go up in flames. I had a 90 Suburban do that when the trans overheated. There was not hardly enough of the truck left to carbon-14 date when it was done..... __________________ 1974 Jimmy- 5.3/4L80e/NP241

09-09-2005, 08:40 AM	#5
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	why dont i just get full coverage on it and keep driving it no not really so pretty much take it to a shop. i was just hoping to find a quick fix answer of something thanks guy i appreciate it! __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-09-2005, 02:05 PM	#6
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Did you check the vent to see if it is open? __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

09-09-2005, 03:23 PM	#7
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	???????vent???????? What Do You Mean And What Is The Location Of It __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-09-2005, 03:24 PM	#8
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	Oh Never Mind I Know What You Are Talking About Top Center I Will Try To Check If I Can Get To It __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-09-2005, 05:14 PM	#9
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Yeh it's towards the top on the left side. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

09-10-2005, 02:00 PM	#10
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	thanks __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-11-2005, 08:40 AM	#11
a28doc '87 V20 4x4 Join Date: Jun 2004 Location: South Western Ohio Posts: 1,073	def sounds like the vent is plugged allowing pressure to build up its amazing how quick the vent can clog up cauing probs Doc __________________ '86 K5 Blazer 4x4 FOR SALE '87 v20 4X4 '99 S10 Blazer 4X4



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