What causes a whine when my 99 Q45t is in motion and rough idle at all times?

Asked by May 11, 2013 at 12:43 PM about the 1999 INFINITI Q45 4 Dr Touring Sedan

Question type: Maintenance & Repair

My Q45t has/had a rough idle, turned very rough during city driving last week. The SES
light came on, the idle evened out, and there is now a whine when the car is in motion,
and it's getting worse. I've already replaced MAF sensor, knock sensors, idle control
valve, plugs, valve cover gaskets. Acceleration from takeoff is very slow.

2 Answers

68,435

Have the computer scanned and post the code(s). Advance and Auto Zone do it free. HTH -Jim

1 of 1 people found this helpful.
10

it might be power steering fluid

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Q45

Looking for a Used Q45 in your area?

CarGurus has 152 nationwide Q45 listings starting at $2,000.

ZIP:

Search INFINITI Q45 Questions

INFINITI Q45 Experts

#1 Paul Washburn
Paul Washburn
Reputation 190
#2 Michaela Mous
Michaela Mous
Reputation 140
#3 v8pw
v8pw
Reputation 120
View All

Related Models For Sale

Used Mercedes-Benz S-Class
156 Great Deals out of 6,388 listings starting at $3,100
Used Nissan Maxima
328 Great Deals out of 24,436 listings starting at $1,995
Used Honda Accord
1,050 Great Deals out of 68,868 listings starting at $1,000
Used BMW 7 Series
156 Great Deals out of 6,129 listings starting at $3,500
Used Mercedes-Benz E-Class
415 Great Deals out of 19,417 listings starting at $1,200
Used Chevrolet Camaro
347 Great Deals out of 31,370 listings starting at $2,500

Used Cars For Sale

2003 INFINITI Q45 For Sale
19 listings starting at $3,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.