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Chris(aka-Moose)
Chris(aka-Moose), Nissan Technician
Category: Nissan
Satisfied Customers: 621
Experience:  16 years of experience
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I have a problem with a 2004 Nissan Altima 2.5. The idle is

Customer Question

Hi there I have a problem with a 2004 Nissan Altima 2.5. The idle is open down 2000 rpm -1500. A engine warm temperature and cold What hav done. I replaced the throttle body. I did the relearning. Still with the same problem I been checking for Vacum leaks. No found
Submitted: 1 year ago.
Category: Nissan
Expert:  david craig replied 1 year ago.

Hi Im David. thanks for visiting the site. please allow me a moment to pull up some info for your vehicle. thanks

Customer: replied 1 year ago.
Ok. Tu
Customer: replied 1 year ago.
Ok. Ty
Expert:  david craig replied 1 year ago.

unplug the mass airflow sensor and see how the engine runs.

Customer: replied 1 year ago.
I just did. I unplugged with the engine running. It idle it didn't change.
Customer: replied 1 year ago.
I didn't see any change
Expert:  david craig replied 1 year ago.

ok. hang on a minute. thanks.

Customer: replied 1 year ago.
Ok
Expert:  david craig replied 1 year ago.

how did you go about checking for vacuum leaks?

Customer: replied 1 year ago.
With carburetor cleaner
Expert:  david craig replied 1 year ago.

did you spray around the intake base really good?

Customer: replied 1 year ago.
Yard. I did
Expert:  david craig replied 1 year ago.

is it more of a rough idle or more of a fluctuating idle?

Customer: replied 1 year ago.
Can I spray staring fluid too
Expert:  david craig replied 1 year ago.

i wouldnt

Expert:  david craig replied 1 year ago.

you can use propane,(not lit of course)

Customer: replied 1 year ago.
I spray all over the intake.
Customer: replied 1 year ago.
I don't see any change of idle
Expert:  david craig replied 1 year ago.

is it more of a rough idle alond with being too high?

Expert:  david craig replied 1 year ago.

disconnect the map sensor. see if it changes, if it doesnt then we need to test the tps inputs/outputs

Expert:  david craig replied 1 year ago.

any update?

Customer: replied 1 year ago.
No yet. The map sensor it should be on the intake manifold right
Expert:  david craig replied 1 year ago.

yes sir

Customer: replied 1 year ago.
I hav. Problem to locate the map sensor.
Expert:  david craig replied 1 year ago.

ok, let me send you a diagram

Customer: replied 1 year ago.
Ok. Ty
Expert:  david craig replied 1 year ago.

this is what it looks like. i will send a diagram of the location next

Expert:  david craig replied 1 year ago.

i cant find a darn diagram with itis location.... check on top or near the throttle body. remove the engine cover. ill keep looking.

Expert:  david craig replied 1 year ago.

did you find it?