Based on your reply about coolant temperature sensor location I went back under the hood last night with a flashlight. Upon removing the ornamental cover up top, all I see in the vicinity of the water pump is some type of device which appears to have a couple of electrical and a couple of vacuum line connections. One of the electrical connections is a fairly heavy guage brown ground wire. I believer there is one clear and one black vacuum line. Is this the coolant temperature sensor? Thanks in advance for any additional info.