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Lurch
Lurch, Ford Cert.
Category: Ford
Satisfied Customers: 20521
Experience:  Ford Cert., Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years
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Thermostat is installed backwards what damage can it

Resolved Question:

if thermostat is installed backwards what damage can it cause, would heater work
Submitted: 5 years ago.
Category: Ford
Expert:  Lurch replied 5 years ago.

 

if thermostat is installed backwards what damage can it cause, would heater work

 

While it is a little difficult to install the Thermostat "backwards", the Thermostat typically would open "IF" there were sufficient Coolant, but would open late
The Heater (heater core) would still circulate "when" the Coolant moved "IF" the Thermostat opened

 

If the Heater (heat) is the main concern, the Heater Core could be clogged & need flushed (50/50 chance of clearing) or Replaced, or it can be the Air Door not closing to allow Heat

Checking "both" Heater Hoses for equal heat, after the engine has reached Operating Temperature, will let you know if the Heater Core is clogged

 

 

 

 

 

 

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Customer: replied 5 years ago.
i installed a new thermostat in my mothers car, the heater semed to work, but I have this constant nagging fear i put it in backwards. Can it damge engine or, and how could I tell
Expert:  Lurch replied 5 years ago.

 

Can it damage engine or, and how could I tell

 

yes, as the Thermostat controls the Coolant flow into the Engine to maintain Operating Temperature. Installing incorrectly can cause restriction, which can result in "overheating"

 

If you are "unsure", your best bet is to take it apart & check.
Gasget should be all you need for parts

 

Please post which engine is in the Ford
351 or 302

 

 

 

 

 

 

 

 

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Lurch and other Ford Specialists are ready to help you
Customer: replied 5 years ago.
no answer what the heck.
Expert:  Lurch replied 5 years ago.

 

no answer what the heck.

 

sorry??
Did you not see my response?
You asked if it can damage engine
I answered above

I also asked what engine, so I could provide you with procedure

 

 

 

 

Customer: replied 5 years ago.
351 I believe and it is a bear to change thermostat, any other way
Expert:  Lurch replied 5 years ago.

 

 

If it is the 351, then it is a pain.......

Here is Ford procedures
see if this helps a little

 

>>>>>> CLICK HERE

 

 

 

 

 

 

 

 

 

 

 

 

 

Customer: replied 5 years ago.
i am only authorizing one payment. I only authorized one, stop this!!!!!!!!!!!!!!! I still did not get an answer worth 18 dollars or tell me what I wanted to hear!!!!!!!!!!!!!!!!!!!!

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