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Ask Chris (aka- Moose) Your Own Question
Chris (aka- Moose)
Chris (aka- Moose), Mercury Technician
Category: Mercury
Satisfied Customers: 1915
Experience:  16 years experience with Mercury
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I m an owner of Mercury sable LS 3.0 DOHC 2001 model My name

Customer Question

hi I m an owner of Mercury sable LS 3.0 DOHC 2001 model My name is ***** ***** from Muscat, Oman
JA: Thanks. Can you give me any more details about your issue?
Customer: yes sure I have several issues like poor fuel efficiency, overheating of radiator water if AC is off etc
JA: OK got it. Last thing — Mercury Mechanics generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 10 months ago.
Category: Mercury
Expert:  SARMIENTO22556 replied 10 months ago.

Hello, I will try my best to help you with your concern.

It sounds like from the symptoms that the radiator fans are not coming on normally without the a/c being on

does that sound about right?

Customer: replied 10 months ago.
radiator fan does not get ON until I have to start AC, if AC is ON, there is no issue of overheating
Customer: replied 10 months ago.
n the main concern of mine is Poor fuel efficiency, I have replace spart plug, spark plug cables, fuel filter, used fuel injector cleaner, however the issue of high fuel consumption is still persist.
Expert:  SARMIENTO22556 replied 10 months ago.

how bad is the fuel consumption?

the overheating should be your top priority.

the fact that your vehicle is running hotter than it should could be a factor in the fuel consumption

Customer: replied 10 months ago.
6.25 Km / ltr petrol 95 octane.
Customer: replied 10 months ago.
overheating problem is noticed recently, while high fuel consumption issue is persistent since long
Customer: replied 10 months ago.
I use to driver with AC ON in most of the case
Expert:  SARMIENTO22556 replied 10 months ago.

but a low coolant level would cause erroneous readings for the coolant temp sensor that controls fuel control.

is the check engine light on?

Customer: replied 10 months ago.
coolant level is sufficient, NO check engine light
Expert:  SARMIENTO22556 replied 10 months ago.

thoroughly check the pcv system and make sure the valve is working properly.

there isn't much left but engine integrity

Customer: replied 10 months ago.
Hi, r u there sorry I could not continue a chat last time
Expert:  SARMIENTO22556 replied 10 months ago.

no that's fine. just check the pcv system and let me know what you find

Customer: replied 10 months ago.
Ok, What is part number of PCV valve n emission separator for this vehicle? Any other thing particularly to inspect or replace ?
Expert:  SARMIENTO22556 replied 10 months ago.

here is the Ford part number for the valve

2L5Z6A666BA

Expert:  SARMIENTO22556 replied 10 months ago.

even though you used fuel injection cleaner there still might be an issue with fuel spray or volume. tha would require removal of the injectors to test.

other then the integrity of the motor itself you pretty have it covered