Partstore will xplain location. It unscrews like a sparkplug. Cleanit first then reinstall..may work. Only if the heatr element on sensor is bad then replace. Theres a test for it
Found this info for removal.
SOURCE: How do you replace water pump in 1999 saturn sl1?
View the video on You Tube by Richpin06a. It was very helpful. I don't do many repairs on cars, but with the help of this video, I replaced the waterpump on my Saturn last weekend. It was easy, and I didn't have to remove the engine.
SOURCE: coolant temperature sensor on a saturn 2002 sl1. where is it loca
The coolant temp sensor is on the driver's side of the engine in the head. If you remove the lid to the airbox and lift the intake tube, you will be able to reach it easily. To remove the connector, you just squeeze it. Then use a socket or a wrench to remove the coolant temp sensor. You will lose some coolant so be ready with the new one or drain the antifreeze before you start.
SOURCE: 1999 Saturn SL1
Your "transmission high input sensor" is also known as a "neutral safety switch". It depends on you trans (auto, or standard) as to the location. Either way, it's a simple and inexpensive repair.
SOURCE: 1999 Saturn SL1 manual...shifter cable bushing
Hello:
NAPA sells the replacement bushing ($20) better than Saturns $200 to replace both cables.
Good luck
SOURCE: Don't know what warning light means
What exactly does the warning light look like? It is probably the transmission warning light. The transmission uses the radiator to cool the transmission fluid. You need to have your cooling system serviced on a 10 year old car. Drain, flush, fresh coolant, new thermostat. A full service. Keep driving and you may end up with a transmission repair. Good luck.
Testimonial: "Haven't actually been to the garage yet to have this advice tried and tested, but will take it seriously and have it done ASAP. Thank you."
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