I posted something here asking about the location of the knock sensor. I opened the hood and looked but I don't see it. A description from the spring said it was somewhere under the intake, near the starter, but I don't see it!
The knock sensor, at least on the SOHC motors, is bolted to the top of the engine block, toward the rear of the engine, just to the left (drivers side) of center. You'll probably need to pull the plastic intake plumbing to see it clearly, as it is sorta below the throttle body.
Look for a black plastic thingie (technical term ;-), about 1 1/4 inch in diameter by an inch tall with a bolt thru the center (12mm head IIRC), and leads running off toward the rear.
Once you locate it, it is easy to reach with a socket and extension. Be sure to clean off the block a bit before bolting the replacement in place, as it needs a good ground connection to work properly.
Hope this helps.
ByeBye! S.
Steve Jernigan KG0MB Laboratory Manager Microelectronics Research University of Colorado (719) 262-3101
I'm actually looking for it because the car overheated, and one of the guys I mentioned in the header said if the knock sensor is melted, the block is probably trash.
But thanks, I'll have another look Sunday...
Why, thank you!
I tried googling it, but I guess I worded it wrong.
Now I know where to look!
Didn't respond because didn't myself know its location.
I thought I had the problem licked, and I drove a little further out than I should have. By the time I got home, the temp guage was pegged.
The last time I started it, there was white smoke coming from everywhere. Now, I know there was an exhaust leak, but this will sure help you find any leaks in the system!
i got the car for $100 with an 'overheating' problem. It has 335,000 on the body, and ~120,000 on the motor.
I know the EJ22 is a good motor, but somehow, the gaskets went bad on this one. Improper installation?
I'm debating either redoing the heads, or getting a new motor. Whichever is cheaper. One thing, the motor was running good, and it sure was a strong motor!
Yea, I'd say so.
Probably a better test would be to run a compression check. If all four cylinders have good compression (140+ PSI), and the numbers are even all around (not more than 5 - 10 PSI variation), you're probably OK. If one or more are low, you have probably warped a cylinder head. If the engine has gotten hot enough to injure the block, you will almost certainly have warped the head(s).
I don't recall your original post on this, but I seem to remember that you are dealing with an older Legacy. EJ22 motor? These things are pretty tough., and unless you continued to run it until it actually seized from lack of lubrication, the block is probably OK. If in doubt, tho, you should be able to find a good used motor at a salvage yard for $500 or so. IMO, it's probably easier to simply do the engine swap than to mess with the cylinder heads with the engine in the car.
Good Luck with the project!
ByeBye! S.
Steve Jernigan KG0MB Laboratory Manager Microelectronics Research University of Colorado (719) 262-3101
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