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SuperDave, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 1491
Experience:  over 16 years experience
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2001 Pontiac grand am gt 3.4 liter cooling fans will not

Customer Question

Customer: ***** *****,2001 Pontiac grand am gt 3.4 liter cooling fans will not come on until you unplug coolant sensor
JA: Thanks. Can you give me any more details about your issue?
Customer: the radiator cooling fans does not come on ,if unplug the temperature coolant sensor they will come on
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $18) to post your type of question to Pontiac Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
Customer: yes the coolant sensor have been change
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Submitted: 1 year ago.
Category: Pontiac
Expert:  SuperDave replied 1 year ago.

Disconnecting the sensor throws it into a limp mode. There may be a problem in the PCM, or the coolant temp sensor could be bad.