Temp gage, service engine soon

Asked by Jun 25, 2016 at 04:58 PM about the 2003 Ford Mustang

Question type: Maintenance & Repair

First the air conditioner started blowing hot and starting whining. Then the service
engine soon light came on and the temp gage jumped to hot. I let it cool down and
there is coolant in the radiator and reserve. What could it be?

2 Answers

7,705

Turn off the ac and see if it still overheats (Don't let it get too hot) If u notice temperature to start rising turn it off and let it cool. Remove radiator cap, start it up again and see if there's water circulation in radiator after it has reached operating temperature. This will determine if your water pump is working and thermostat opening up

The thermostat is not opening up. Can that cause the problem with the air conditioner blowing hot for a while and the cold air?

Your Answer

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    4,690
  • #2
    Bob Beaman
    Reputation
    1,330
  • #3
    COMETGUY61
    Reputation
    1,130
View All

Related Models For Sale

Used Chevrolet Camaro
498 Great Deals out of 33,565 listings starting at $1,450
Used Chevrolet Corvette
175 Great Deals out of 19,366 listings starting at $3,941
Used Ford Mustang SVT Cobra
8 Great Deals out of 305 listings starting at $5,000
Used Ford F-150
3,198 Great Deals out of 239,103 listings starting at $1,300
Used BMW 3 Series
1,162 Great Deals out of 37,206 listings starting at $1,000
Used Chevrolet Silverado 1500
2,703 Great Deals out of 196,294 listings starting at $699
Used Jeep Wrangler
457 Great Deals out of 20,145 listings starting at $3,000
Used BMW M3
28 Great Deals out of 2,171 listings starting at $6,599
Used Nissan 350Z
43 Great Deals out of 1,201 listings starting at $2,499
Used Honda Civic
774 Great Deals out of 67,996 listings starting at $999

Used Cars For Sale

2018 Ford Mustang For Sale
5,401 listings starting at $21,754
2017 Ford Mustang For Sale
97 Great Deals out of 13,157 listings starting at $16,999
2016 Ford Mustang For Sale
86 Great Deals out of 3,217 listings starting at $13,991
2015 Ford Mustang For Sale
66 Great Deals out of 2,984 listings starting at $12,995
2014 Ford Mustang For Sale
105 Great Deals out of 2,870 listings starting at $8,999

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.