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98 civic dx overheated. Replaced head gasket, exhaust

Customer Question
manifold, radiator, thermostat, fan motor...
98 civic dx overheated. Replaced head gasket, exhaust manifold, radiator, thermostat, fan motor, and sensor switch. Everything functioning, but fan is not kicking on as temp rises? What could possibly be wrong???
Submitted: 1 year ago.Category: Honda
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Answered in 3 minutes by:
11/16/2016
Mechanic for Honda: Amedee, Former ASE Master Technician replied 1 year ago
Amedee
Amedee, Former ASE Master Technician
Category: Honda
Satisfied Customers: 27,098
Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
Verified

Hello and welcome!

My name isCustomerand I can assist you with your question.

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Mechanic for Honda: Amedee, Former ASE Master Technician replied 1 year ago

Are you looking for possible causes?

Are there any codes in the computer?

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Customer reply replied 1 year ago
Ok please help I'm out of ideas
Mechanic for Honda: Amedee, Former ASE Master Technician replied 1 year ago

I will be happy to help.

One minute while I gather some info..

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Customer reply replied 1 year ago
No codes... Yes possible causes
Customer reply replied 1 year ago
We have changed out everything and cannot figure out why the fan is not turning on
Mechanic for Honda: Amedee, Former ASE Master Technician replied 1 year ago

I suspect either the new fan switch is at fault or there is a wiring issue going on preventing the cooling fan from coming on.

At the tempature switch, unplug the connector and jump the Green wire to the Black ground wire and verify the cooling fan runs. If the fan does not operate, check the relay, fuses and wire harness. If the cooling fan operates, verify the thermostat opens correctly and the radiator is not restricted. The temperature sensor needs to heat up to 194 degrees, then it should ground the GRN wire. If it does not, then the fan sensor is faulty.

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Mechanic for Honda: Amedee, Former ASE Master Technician replied 1 year ago

It is possible that the relays are not getting power or maybe the switch is not getting a ground on the black wire. Just some things to check..

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Amedee
Amedee
Amedee, Former ASE Master Technician
Category: Honda
Satisfied Customers: 27,098
27,098 Satisfied Customers
Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

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