1999 blazer 2wd engine in a 4wd???
Senior Member
Joined: Jan 2011
Posts: 546
From: Auburn, Ga
i figgerd it out.. lol nevermind oil pressure sensor. the engines number is 2517655 the blazer is a 4wd, the replacement engine is from a 2wd
i have had it in and test fit and it was too deep for the mm and the front diff, but i think that may have been due to the oil pan being for a 2wd, i have the pan replaced with the 4wd pan and havent put it back in yet, just trying to cover the bases before i put it in and have to pull it back out AGAIN
i have had it in and test fit and it was too deep for the mm and the front diff, but i think that may have been due to the oil pan being for a 2wd, i have the pan replaced with the 4wd pan and havent put it back in yet, just trying to cover the bases before i put it in and have to pull it back out AGAIN
Thread Starter
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Beginning Member
Joined: Mar 2013
Posts: 30
pics would help. heres what i have, im thinking that the lower rusty one is for the hose... not sure what the upper one is, next to the egr valve. im lost... 
oh and by the way, this is my first time re-installing an engine. 
oh and by the way, this is my first time re-installing an engine.
Beginning Member
Joined: Mar 2011
Posts: 48
From: Cortland, IL
The lower rusty hose connection is the water pump and that goes to the heater core. The one on the intake next to the EGR I think is the return from the heater core. I will have to double check with that one to make sure.