Please Help Me =( - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HotRod73 · 04-01-2007, 01:02 AM

Ok, so my 87 swb has a new issue... when you first start it up there is a squeek like a belt and only does it when u rev up, could be the belt? when you put into reverse it takes like 5-10 seconds then u can feel it lightly kick in, my truck also does the squeek if i hammer the throttle and it squeeks right before it shifts into the next gear or if i go 55mph or faster it will untill i slow down... i was told my torque converter may be going bad? is the squeek a belt? sometimes it feels as if my truck is bogging down and then it will catch up with its self and go.... whats the deal? its a 305 tbi with a th400 trans

ed3196499 · 04-01-2007, 10:37 AM

It almost sounds like you have two seperate problems. The squeek at start up and revving sounds like a belt slipping. Are your belts glazed over? And the second problem sounds allot like low/bad fluid. Also there is a vaccum line to the tranny modulator from the intake make sure it is connected and not split. I would drop the pan and fully service the tranny before going right to the converter.

**old Rusty C10** · 04-01-2007, 10:40 AM

if the fluid is not cherry red and smells burnt id leave the trans alone and budget a rebuild.. if its low id add to it but to service a trans with burnt clutches only hastens its demise. I agree with the belt issue either tighten up the slack or change them and if the pulleys are real glossy id use a little sandpaper on em to get the shine off and make the belt grip better

**crossy** · 04-01-2007, 10:54 AM

A converter squeaking??? I don't think so.
listen good to the alternator with a long screwdriver while someone else taps the throttle. Bearings go bad in those alternators all the time. crossy

dh81k30 · 04-01-2007, 12:38 PM

HotRod73,

? Could it be a bad A.I.R. pump causing the belt to slip and squeal?

HotRod73 · 04-02-2007, 08:45 AM

what is the a.i.r. pump located and how do i tell?

04-01-2007, 01:02 AM	#1
HotRod73 Registered User Join Date: Mar 2006 Location: Norman, Oklahoma Posts: 553	Please Help Me =( Ok, so my 87 swb has a new issue... when you first start it up there is a squeek like a belt and only does it when u rev up, could be the belt? when you put into reverse it takes like 5-10 seconds then u can feel it lightly kick in, my truck also does the squeek if i hammer the throttle and it squeeks right before it shifts into the next gear or if i go 55mph or faster it will untill i slow down... i was told my torque converter may be going bad? is the squeek a belt? sometimes it feels as if my truck is bogging down and then it will catch up with its self and go.... whats the deal? its a 305 tbi with a th400 trans __________________ 1973 Chevrolet C20 (Under Construction)

04-01-2007, 10:37 AM	#2
ed3196499 Registered User Join Date: Mar 2007 Location: New Orleans La Posts: 125	Re: Please Help Me =( It almost sounds like you have two seperate problems. The squeek at start up and revving sounds like a belt slipping. Are your belts glazed over? And the second problem sounds allot like low/bad fluid. Also there is a vaccum line to the tranny modulator from the intake make sure it is connected and not split. I would drop the pan and fully service the tranny before going right to the converter. __________________ Ed U.S. Coast Guard BMC (retired)

04-01-2007, 10:40 AM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: Please Help Me =( if the fluid is not cherry red and smells burnt id leave the trans alone and budget a rebuild.. if its low id add to it but to service a trans with burnt clutches only hastens its demise. I agree with the belt issue either tighten up the slack or change them and if the pulleys are real glossy id use a little sandpaper on em to get the shine off and make the belt grip better __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

04-01-2007, 10:54 AM	#4
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: Please Help Me =( A converter squeaking??? I don't think so. listen good to the alternator with a long screwdriver while someone else taps the throttle. Bearings go bad in those alternators all the time. crossy __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

04-01-2007, 12:38 PM	#5
dh81k30 Junior Member Join Date: May 2006 Location: W-S, NC Posts: 211	Re: Please Help Me =( HotRod73, ? Could it be a bad A.I.R. pump causing the belt to slip and squeal? __________________ Have fun, Don

04-02-2007, 08:45 AM	#6
HotRod73 Registered User Join Date: Mar 2006 Location: Norman, Oklahoma Posts: 553	Re: Please Help Me =( what is the a.i.r. pump located and how do i tell? __________________ 1973 Chevrolet C20 (Under Construction)



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.