1990 Toyota Cressida 3.0L inline 6
Faults:
This model of Cressida was abandoned by Toyota, even though they knew about the problem, which is notorious, and you can find the answer for your inherent problem all over the Web from disgruntled Cressida owners.
I own a '90 and a '91, and BOTH engines have been rebuilt because of the head gasket factory DEFECT. The '91 blew the HG and I had to rebuild the engine, TWICE. The '90 (purchased in mint condition) just required a gasket replacement - I didn't have to rebuild the engine because I caught it BEFORE the engine blew. Toyota used an asbestos gasket with the incorrect torque, and even after they found the problem they refused to honor the hundreds of claims from blown engine owners.
The fix - The coolant enters your engine from a blown head gasket - If the head (and engine) isn't/aren't damaged you MAY be able to get away with replacing the head gasket without rebuilding the engine. When you do, make sure you use the NON-Toyota gasket and the correct torque, which is about 10 lbs. tighter than factory.
Also check the inline relays and fuses, which control the condensor fans. I troubleshot my circuits and they all came up OKAY, BUT the fans weren't coming on. But the fans DID come on when I applied direct power to them. I had to change each fuse and relay one-by-one before I found the defective fuse - The fans came on when the engine was in traffic (as designed) and all was well with the world. Toyota also has a weird default - If there is NOT enough Freon in the system, the pressure won't allow the fans to engage. You'll get a little cooling in the cabin, but you will overheat eventually.
Also check the fan clutch which is in the center of the BIG fan cooling the radiator. This fan will turn just great and you THINK it's working, but the silicone IN the clutch MAY have dried up and you can pretty much stop the fan with your Hand. DON'T DO IT.! But you can remove the fan, replace the silicone for a couple of bucks and the difference will be HEARD immediately. You DO require a special (hammer-type) tool to remove the bolts. Once replaced, you will hear a strong wind sound as soon as you turn on your engine.
You can do all the 'other' basic checks - T/Stat, system pressure test, oil cap inspection (if it's milky under the cap, your engine and cooling system has been compromised).
I am a buyer of ALL makes of vehicles for export, and because of Toyota's total disregard for this inherent factory-built and designed problem, I DON'T sell Toyotas and I recommend ALL my clients to buy ANYTHING BUT. Because of this Toyota has lost over TWO HUNDRED vehicle sales to their competition.
Good luck to all you loyal Cressida owners.
Doc.
Would you buy another car from this manufacturer? No
Review Date: 26th November, 2008
24th May 2013, 03:00
It is very important to know not to add the coolant when replacing the head. This should be left for about 1500km to allow the head to settle in on the new gasket. Re-tighten the head bolts and add the coolant. Why? Because the coolant sets up a very thin barrier between the block and the head, and it does not seal properly.
I have learnt from experience, the first gasket blew, this basic routine was not followed, and it blew for a second time! On this occasion the head was not decked! On the third occasion the head was decked and reassembled, and the car is running beautifully. Small things that many mechanics do not know.
Ted.
4th Feb 2011, 17:56
I read all over the web on 89-92 Cressida blown head gasket and for some reason, nobody knows what's reason for the blown head gasket. Like the article above, change the gasket to non manufacturer, surface head and block. I have two Cressidas, and it's taken me two years to finally solve this problem.
Let me give you a hint, surfacing the block just makes things worse, if you didn't fix the manufacturer defect. If you've got a Cressida and you have to add coolant before oil change or every seven thousand miles, you have a blown head gasket. If you solve the problem, you can use any gasket, included manufacturer. When you ready to torque the head bolts, use Lexus SC 300 torque spec.