1997 Cadillac STS water crossover manifold

KENNETH GRAMLIN

MEMBER
1997 CADILLAC STS
V8
FWD
AUTOMATIC
184,000 MILES

I have had problems with over heating found bad radiator replaced it done a presure test good ran it at a ideal with presure tester on it not much more presure so ruled out head gasket. On a cold morning found steam on driver's side and looked like it was coming from water crossover manifold near the back side nearest the fire wall. Steam was coming up from under air intake near the bottom near head or block. How do I get to the bolt with all of the wireing harness in the way and do I need to disable any safety plug in so has not to deploy the air bags. Has this problem happen to very many people with northstar engines. Thank you Kenny

1 Reply

FACTORYJACK

MECHANIC
4,159 POSTS

Happens quite often, although more common on newer vehicles. Resealing the crossover is no stroll in the park. The harness and the lower bolts in the front and rear add the difficulty. The seals ride on the bolts as you put the housing back in place. You just need to disconnect everything attached to it, and reposition the harness to access the lower portion. Disconnecting the coolant temp sensor, and the ground eyelet will allow it more movement away from the area you need to get to.