Question about 2003 Toyota Camry
It's time consuming and can be tedius, but not much harder than changing spark plugs. Just a few more steps. You will need a torgue wrench and a manual, as well as normal engine mechanics tools. Don't force anything. The bolts are steel and they go into aluminum. The electrolosis between the 2 metals tends to lock the bolts into place. They will snap if you try to hurry them.
Posted on Jan 08, 2009
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Posted on Jan 02, 2017
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Oct 10, 2014 | 1998 Toyota Camry
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Dec 18, 2010 | 2002 Cadillac Deville
You will have to remove the intake manifold (this is the solid large plastic cover that covers the top of the engine when you remove the engine cover). There are many wires and small vacuum hoses to disconnect. Plus.., when re-installing, it is a common problem the manifold cracks if excessive torque is applied to the fastening bolts. And you probably should relpace the intake manifold gasket.You can then remove the thermostat assembly by disconnecting the hoses and loosening the mounting screw.
The procedure as per service manual is as follows:----
Following the Service Manual instructions, drain the coolant circuit, then remove the return pipe and the short rubber hose connected to the engine main coolant rail (1 clip at the bottom + 1 clip at the top). You remove also the outlet hose (1 clip at the engine outlet spout + 1 clip at the bottom pipe, you need to loosen the pipe mount to remove the hose). Once removed the return pipe you can undo the coolant rail: 2 (tight) bolts below the rail and the oil dipstick bolt holding the thermostat housing. Doing this without the manifold in place is simple, but its not that easy with the manifold on.... once loosened the coolant rail you can remove the thermostat housing. You open it (3 bolts) and replace the old thermostat with new. All 3 gaskets should be replaced, to minimize the risk of leaks. Apply silicone lubricant on the O-rings, then fit housing + coolant rail back in.
This will help you.Thanks.Helpmech.
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