2000 Chev S10 Blazer, 4.3 engine, auto overdrive trans. Losing coolant. Leaking at the engine/bell housing connection on the driver side, somewhere from above. Is there possibly a coolant sensor on the top rear of the engine? Kinda like the old Chevy V-8 oil sensor that was mistaken for a rear main leak.
2007-05-17 14:08:19 · 8 answers · asked by Tx Bohemian 2 in Cars & Transportation ➔ Maintenance & Repairs
I need to add. I already checked the hoses and the radiator. There is no evidence of leaking anywhere except the location I said in the original statement/question
2007-05-17 14:19:44 · update #1
Couple of other things: I checked the water pump also.
I don't think this has a heater control valve in the heating system. If it does where might it be?
2007-05-17 14:23:02 · update #2
It is very common for the Intake manifold to go out on these engines, I have seen the intake manifold leak on probably more then half of the 4.3L GM's we get into the shop. Most of the GM V6 engines have problems with the intake manifold leaking. A leaking intake manifold can be seen from anywhere around the intake manifold. The intake manifold is at the top of the engine between the valve covers / heads. This is a very common problem for these engines.
2007-05-17 15:14:36 · answer #1 · answered by gregthomasparke 5 · 0⤊ 0⤋
did you check the heater hoses that run to the firewall?It could also be a leaking freeze plug and I don't know about chevy but I had a ford ranger that had coolant lines run around the back of the motor to the throttle body
2007-05-17 14:31:48 · answer #2 · answered by spraymonkey001 6 · 1⤊ 0⤋
did you examine the heater hoses that run to the firewall?it could additionally be a leaking freeze plug and that i do no longer comprehend approximately chevy yet I had a ford ranger that had coolant strains run around the returned of the motor to the throttle physique
2016-10-05 07:07:57 · answer #3 · answered by ? 4 · 0⤊ 0⤋
intake manifold is leaking on 2000 blazer 4.3. common problem.
2015-07-17 13:20:28 · answer #4 · answered by jimmy p 1 · 0⤊ 0⤋
sounds like a freeze plug is leaking on the back of the head.
2007-05-17 14:46:40 · answer #5 · answered by mister ss 7 · 1⤊ 0⤋
check all hoses and don't forget the water pump and the thermostat. they tend to leak a lot.
2007-05-17 14:11:04 · answer #6 · answered by Anonymous · 0⤊ 1⤋
it could be leaking at the heater control valve
2007-05-17 14:14:12 · answer #7 · answered by smokey 7 · 0⤊ 1⤋
possibile welsh plug at back of eng on back head?
2007-05-17 14:22:57 · answer #8 · answered by Anonymous · 1⤊ 0⤋