Spark plugs done! But what did I break?
04-12-2011, 08:13 AM
#21
04-12-2011, 08:38 AM
#22
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Without that sensor, the car will not "know" when its up to operating temperature. You can read this really good article on how they work: http://www.wellsve.com/sft503/counterp_v2_i2_1998.pdf
04-12-2011, 10:03 AM
#23
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Without ECT, the PCM will see something like -39°F (i.e. subfreezing) which will cause it run extra fuel and extra timing (i.e. references the tables incorrectly)... and it will not go into Close Loop.
04-17-2011, 11:57 PM
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Got the sensor from the parts store so now I just need to put it in.
On a side note, anyone have a trick to getting the pass side rear coil pack bracket bolt out? I was able to do the plugs without moving it since I could get a grab on it, but I want to pull it off when I start cleaning up the engine bay. I tried everything from swivel sockets to ratchet wrenches and just couldn't get the f*cker.
On a side note, anyone have a trick to getting the pass side rear coil pack bracket bolt out? I was able to do the plugs without moving it since I could get a grab on it, but I want to pull it off when I start cleaning up the engine bay. I tried everything from swivel sockets to ratchet wrenches and just couldn't get the f*cker.
04-20-2011, 08:51 AM
#29
That @#*# bolt needs to go!!! Once you do manage to get it out, do NOT put it back!! You would be amazed at how many of these cars are running around with it missing...
Some vehicles do indeed use two different temp sensors. One for the gauge, one for the ECM. This one does not. It uses one for both.
Keep in mind when you change your temp sensor, you will be opening the cooling system. Now, if you are really fast, have your new sensor all ready to install with pipe dope already on the threads, you can do this without draining the cooling system. Just wait until the car is completely cooled down (over night is preferred), leave the radiator cap in place, DO NOT LOOSEN, then very quickly unscrew the old sensor and screw in the new one. You will lose very little coolant. Very little. Plus, you have a vent right there in the cylinder head, so it should bleed very easily. These are not pipe thread fittings. They are a 12mm X 1.5 thread that take a washer and pipe dope on the threads. Good luck!
Some vehicles do indeed use two different temp sensors. One for the gauge, one for the ECM. This one does not. It uses one for both.
Keep in mind when you change your temp sensor, you will be opening the cooling system. Now, if you are really fast, have your new sensor all ready to install with pipe dope already on the threads, you can do this without draining the cooling system. Just wait until the car is completely cooled down (over night is preferred), leave the radiator cap in place, DO NOT LOOSEN, then very quickly unscrew the old sensor and screw in the new one. You will lose very little coolant. Very little. Plus, you have a vent right there in the cylinder head, so it should bleed very easily. These are not pipe thread fittings. They are a 12mm X 1.5 thread that take a washer and pipe dope on the threads. Good luck!
04-20-2011, 09:54 AM
#30
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That @#*# bolt needs to go!!! Once you do manage to get it out, do NOT put it back!! You would be amazed at how many of these cars are running around with it missing...
Some vehicles do indeed use two different temp sensors. One for the gauge, one for the ECM. This one does not. It uses one for both.
Keep in mind when you change your temp sensor, you will be opening the cooling system. Now, if you are really fast, have your new sensor all ready to install with pipe dope already on the threads, you can do this without draining the cooling system. Just wait until the car is completely cooled down (over night is preferred), leave the radiator cap in place, DO NOT LOOSEN, then very quickly unscrew the old sensor and screw in the new one. You will lose very little coolant. Very little. Plus, you have a vent right there in the cylinder head, so it should bleed very easily. These are not pipe thread fittings. They are a 12mm X 1.5 thread that take a washer and pipe dope on the threads. Good luck!
Some vehicles do indeed use two different temp sensors. One for the gauge, one for the ECM. This one does not. It uses one for both.
Keep in mind when you change your temp sensor, you will be opening the cooling system. Now, if you are really fast, have your new sensor all ready to install with pipe dope already on the threads, you can do this without draining the cooling system. Just wait until the car is completely cooled down (over night is preferred), leave the radiator cap in place, DO NOT LOOSEN, then very quickly unscrew the old sensor and screw in the new one. You will lose very little coolant. Very little. Plus, you have a vent right there in the cylinder head, so it should bleed very easily. These are not pipe thread fittings. They are a 12mm X 1.5 thread that take a washer and pipe dope on the threads. Good luck!
The coolant sensor I haven't attempted yet, but I'll take your advice when I do, thanks!
