1999 FORD TAURUS SE REPEATEDLY LOSES ENGINE POWER WHEN USING HEATER
135

Asked by nunya3251 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
23,590

Dannyl answered 9 years ago

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.

Mark helpful

Your Answer:

Related Questions

  • 1999 FORD TAURUS SE REPEATEDLY LOSES ENGINE POWER WHEN USING HEATER 2 Answers

    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 SO...

    1999 Ford Taurus SE

    -

    Maintenance & Repair

  • 1999 Ford Taurus SE won't start when warm 1 Answer

    Always happens after 3rd or 4th stop when running errands. No crank, no click, no nothing. Wait awhile then starts and runs perfectly. 2 auto shops tell me they can't find anything wrong.

    1999 Ford Taurus SE

    -

    Maintenance & Repair

  • ford taurus power windows inop 2 Answers

    2001 ford Taurus power windows inop has auto down system for drivers window both power and ground at master switch when rolling down drivers window relay at fuse box clicks repeatedly have no ground ...

    Ford Taurus

    -

    Maintenance & Repair

  • 1999 ford Taurus Se noise 1 Answer

    My car makes a very loud grinding/rubbing sound sometimes. If I tap my brakes the noise stops but comes right back when I release brake. Get the noise on uneven pavement also. It is not a bearin...

    1999 Ford Taurus SE

    -

    Maintenance & Repair

  • 1999 Ford Taurus SE Wagon, V6, won't start, no sound, no clicks, won't jump 3 Answers

    I have a 1999 Taurus SE wagon, was running good, new battery 3 mths ago, suddenly won't start, won't crank, won't jump. Completely dead. Towed home. Not a mechanic, what should be checked? Ran pe...

    1999 Ford Taurus

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1999 Ford Taurus

Write a car review

Review another car

Shortcuts

Search Ford Taurus Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    3,950
  • #2
    MrBlueOval
    Reputation
    3,680
  • #3
    Lanadella
    Reputation
    3,160
View All

Know more, shop wisely

Search

Related Models For Sale

Used Ford Explorer
2,275 Great Deals out of 63,413 listings starting at $700
Used Ford F-150
6,060 Great Deals out of 130,219 listings starting at $1,500
Used Chevrolet Impala
261 Great Deals out of 3,935 listings starting at $795
Used Ford Mustang
877 Great Deals out of 23,035 listings starting at $1,150
Used Toyota Camry
2,091 Great Deals out of 37,807 listings starting at $575
Used Honda Accord
1,513 Great Deals out of 29,433 listings starting at $600
Used Chevrolet Malibu
969 Great Deals out of 20,140 listings starting at $700
Used Ford Focus
413 Great Deals out of 5,248 listings starting at $750
Used Honda Civic
1,371 Great Deals out of 29,067 listings starting at $600
Used Nissan Maxima
243 Great Deals out of 3,530 listings starting at $2,400

Used Cars For Sale

2017 Ford Taurus SE For Sale
6 Great Deals out of 32 listings starting at $8,998
2016 Ford Taurus SE For Sale
25 listings starting at $6,995
2015 Ford Taurus SE For Sale
7 Great Deals out of 37 listings starting at $4,999

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. Content will be removed if CarGurus becomes aware that it violates our policies.