1999 FORD TAURUS SE REPEATEDLY LOSES ENGINE POWER WHEN USING HEATER

75

Asked by Jan 11, 2015 at 01:55 AM about the 1999 Ford Taurus SE

Question type: Maintenance & Repair

I LOSE POWER WHEN I TURN ON MY HEATER OR DEFROST. I KNOW THERE IS AN INITIAL BRIEF "LAG" OR LOSS OF POWER ON MOST CARS WHEN YOU TURN THE HEATER FAN ON BUT IT REPEATEDLY LAGS EVERY 15-20 SECONDS AND SOUNDS LIKE THE ENGINE IS LABORING ABNORMALLY HARD.  JUST REPLACED ALTERNATOR & BATTERY CHECK IS FINE

2 Answers

8,850

A/c pressure cycling switch cycles pump to remove damp from the air in defrost, mix, as well as a/c settings. when the evap suction line pressure drops below the setting of the switch, it kicks out the pump to prevent damage to the pump. This results in a time relatable cycling. That's typical and expected. If the engine runs or idles poorly, it can drag the engine down in speed. maintenance and repair of driveability systems can restore idle quality.

8,850

Stop yelling.

Your Answer

Ford Taurus Experts

  • #1
    Tom Demyan
    Reputation
    4,300
  • #2
    dandyoun
    Reputation
    2,040
  • #3
    lightGear
    Reputation
    1,980
View All

Related Models For Sale

Used Chevrolet Impala
593 Great Deals out of 34,464 listings starting at $900
Used Ford Explorer
1,269 Great Deals out of 68,992 listings starting at $750
Used Ford F-150
3,218 Great Deals out of 220,430 listings starting at $1,200
Used Ford Mustang
599 Great Deals out of 39,148 listings starting at $1,895
Used Chevrolet Malibu
1,131 Great Deals out of 62,111 listings starting at $880
Used Honda Accord
1,103 Great Deals out of 73,054 listings starting at $1,100
Used Toyota Camry
1,120 Great Deals out of 86,563 listings starting at $800
Used Ford Focus
811 Great Deals out of 61,920 listings starting at $900
Used Nissan Maxima
329 Great Deals out of 21,762 listings starting at $1,200

Used Cars For Sale

2017 Ford Taurus SE For Sale
568 listings starting at $15,999
2016 Ford Taurus SE For Sale
94 listings starting at $14,773
2015 Ford Taurus SE For Sale
3 Great Deals out of 274 listings starting at $9,995
2014 Ford Taurus SE For Sale
4 Great Deals out of 102 listings starting at $7,950
2013 Ford Taurus SE For Sale
6 Great Deals out of 110 listings starting at $5,988

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.