The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Torque converter bolts got loose, now it won't move at all

Accelo · 09-18-2021, 04:54 PM

I have seen many a convertor come loose and never had one destroy the pump. However, it could conceivably happen. How many miles on the transmission? You can check for a pump failure by disconnecting a cooler line and see if its pumping oil. If not the pump is indeed bad. It can be the converter was not correctly spaced from the flex plate. Either too tight or too loose will cause the pump to fail. Too tight is typically an immediate failure. So the odds are it was not fully engaged at the pump and the converter looseness was all it took to do the final wearing on the pump lugs. If you have no transmission oil pressure/cooler flow it will have to come out. Then you can inspect the converter snout and the pump lugs to see where you need to go next.
This is the longer version of what Richard indicated.

09-18-2021, 04:54 PM	#3
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,161	Re: Torque converter bolts got loose, now it won't move at all I have seen many a convertor come loose and never had one destroy the pump. However, it could conceivably happen. How many miles on the transmission? You can check for a pump failure by disconnecting a cooler line and see if its pumping oil. If not the pump is indeed bad. It can be the converter was not correctly spaced from the flex plate. Either too tight or too loose will cause the pump to fail. Too tight is typically an immediate failure. So the odds are it was not fully engaged at the pump and the converter looseness was all it took to do the final wearing on the pump lugs. If you have no transmission oil pressure/cooler flow it will have to come out. Then you can inspect the converter snout and the pump lugs to see where you need to go next. This is the longer version of what Richard indicated.