Question-------------------------
Mr. Ritter:
I sincerely appreciate your prompt response to my question. I checked
on the internet and that item is $125 item!
I presume there is no way to test anything to be certain - or reasonably
certain - that the fault lies with that item ?
For example, what if one unhooked the connections - would that simulate
a defective unit so that if the car does the same thing as when connected
it would isolate the problem to the sensor.
I would hate to invest $125 and discover it wasn't the problem.
Followup To
Question -
I have a 1991 Toyota Camry SE 6 cyl.
Recently, on cold mornings, it will hardly start
except after many revolutions of the starter.
After that - all day long, even after sitting
for several hours, it starts easily.
The next morning, however, is a repeat - it will not start - almost always nearly runs the battery down.
Which sensor is defective or what else is it?
Answer -
There may be a problem with the cold start injector time switch located near the thermostat, it activates the cold start injector, try replacing it to see if it helps.
AnswerThe cold start time switch is a Negative temperature coefficient(NTC)sensor, if the temperature goes up resistance goes down, when cold, resistance goes up,the computer needs to see high resistance to turn the cold start injector on, you can simulate high resistance by disconnecting the connector and so creating an open circuit, the engine should run rich and so should start easier, there are specific resistance checks that can be made on the switch, the specs are in the toyota repair manual, maybe you can take it out and have the dealer test it for you before investing the money.
