Pinging or a tink tink tink noise, like a small hammer hitting my tranny - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Narkoleptik · 05-20-2005, 04:20 AM

I hear it when i shift into reverse or drive, and it seems to sometimes make itself known while i'm actually driving down the road. It goes away when i let go of the gas. I remember someone asking about this long ago and I was wondering if anyone can give me some advice or point me in the right direction.

It's a 69 GMC 2wd 350 with a TH-400. Any help would be appreciate and thank you in advance.

BULIT · 05-20-2005, 06:03 AM

first thing i would do is check the flywheel to see if its loose or cracked usually around the bolt circle and also check the converter bolts

Guy

barn9 · 05-20-2005, 06:38 AM

A bad U-joint could be a possibility also. They sometimes make some strange sounds that echo through the driveline.

Woody · 05-20-2005, 08:13 AM

Might be the Carrier Bearing. Sometimes they make noises.

buckola · 05-20-2005, 09:56 AM

What BARN 9 said.

blazerparts · 05-20-2005, 10:49 AM

another vote for u joints

Bamm · 05-20-2005, 11:13 AM

Check u-joints first , then, if it's still there, take off dust shield and check torque converter bolts, they may be backing out.

72c5 · 05-20-2005, 11:23 AM

i vote for engine knock.......if your disty is advanced too much, it will knock.....definately very bad to drive a knocking engine hard.......

Broken_down? · 05-20-2005, 01:35 PM

vote for fly wheel/torqe. if they are backing out they will make racket too.

just my opinion.

Sillyoldman · 05-20-2005, 04:14 PM

I'd say check that tranny out fast! I had the same thing happen, and about 100 miles down the road my tranmission was reduced to metal fragments.

71cadc10 · 05-20-2005, 05:15 PM

If it's one or 2 loud "tinks" when you are shifting between drive and reverse, then I'd almost assure you its U joints. They get play in them, make a loud tink that sounds tinny like thru the driveshaft. When you shift to reverse you load it one way, drive the other way and it really brings the noise out. Have it on my car right now, drive shaft is coming out tomorrow......

05-20-2005, 04:20 AM	#1
Narkoleptik 69 GMC LWB FLEET Join Date: May 2002 Location: Tucson, Az, USA Posts: 108	Pinging or a tink tink tink noise, like a small hammer hitting my tranny I hear it when i shift into reverse or drive, and it seems to sometimes make itself known while i'm actually driving down the road. It goes away when i let go of the gas. I remember someone asking about this long ago and I was wondering if anyone can give me some advice or point me in the right direction. It's a 69 GMC 2wd 350 with a TH-400. Any help would be appreciate and thank you in advance. __________________ TUCSON, AZ

05-20-2005, 06:38 AM	#3
barn9 Half a bubble off! Join Date: Jun 2000 Location: Winfield, Ks, USA Posts: 5,588	A bad U-joint could be a possibility also. They sometimes make some strange sounds that echo through the driveline. __________________ Just call me LB. '71 Cheyenne, 402BB, hauls blondes, brunettes, or redheads.

05-20-2005, 09:56 AM	#5
buckola 1 Wrench / 10 Knuckles Join Date: Sep 2002 Location: Burlington Ontario Posts: 179	What BARN 9 said. __________________ 1970 GMC Custom Vortec Heads, Edelbrock Performer Intake, Crane 272 Energizer, Hedman Full Length HTC Headers 2006 Dodge Charger SRT8. 1/4 mile 13.3 1973 Z1 900 Kawasaki ( all original)

05-20-2005, 10:49 AM	#6
blazerparts No,I DON'T have Tourett's Join Date: Mar 2005 Location: Reno, NV Posts: 556	another vote for u joints __________________ '72 K5 CST 350/350 Daily Driver '69 GMC3500 Camper Special CST Flatbed 396/400 Upgraded to show truck '69 GMC 2500 L6292, 3spd beater

05-20-2005, 11:13 AM	#7
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	Check u-joints first , then, if it's still there, take off dust shield and check torque converter bolts, they may be backing out. __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS Last edited by Bamm; 05-20-2005 at 11:14 AM.

05-20-2005, 06:03 AM	#2
BULIT Registered User Join Date: Apr 2005 Location: chicago illinois Posts: 23	first thing i would do is check the flywheel to see if its loose or cracked usually around the bolt circle and also check the converter bolts Guy

05-20-2005, 08:13 AM	#4
Woody Registered User Join Date: Feb 2000 Location: Georgetown, KY, USA Posts: 631	Might be the Carrier Bearing. Sometimes they make noises.

05-20-2005, 11:23 AM	#8
72c5 Registered User Join Date: Dec 2003 Location: Boston Posts: 311	i vote for engine knock.......if your disty is advanced too much, it will knock.....definately very bad to drive a knocking engine hard.......

05-20-2005, 04:14 PM	#10
Sillyoldman #16876 Join Date: Apr 2005 Location: Auburn WA Posts: 12,266	I'd say check that tranny out fast! I had the same thing happen, and about 100 miles down the road my tranmission was reduced to metal fragments. __________________ Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. *"I love that old car smell"* *Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.*

05-20-2005, 05:15 PM	#11
71cadc10 Registered User Join Date: Apr 2004 Location: Boiling Springs, PA Posts: 435	If it's one or 2 loud "tinks" when you are shifting between drive and reverse, then I'd almost assure you its U joints. They get play in them, make a loud tink that sounds tinny like thru the driveshaft. When you shift to reverse you load it one way, drive the other way and it really brings the noise out. Have it on my car right now, drive shaft is coming out tomorrow...... __________________ 71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear



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