Chrysler Sebring 2003 overheating

Asked by Oct 25, 2013 at 08:07 PM about the 2003 Chrysler Sebring LX

Question type: Maintenance & Repair

My 2003 Chrysler Sebring is overheating.

A mechanic friend of mine is trying to teach me how to work on cars, and we redid the head gasket and ran into many issues, and this problem is our final barrier from having a brand new car essentially.

Fans aren't coming on because the ECM is reading the coolant temperature 60degrees off. Not sure what is causing the false reading.
Replaced thermostat (a previouse "mechanic" had put it in backwards), pushed air through the coolant lines, gets good heat, fans failsafe come on when AC is on, I can manually hardwire the fans on, but this is not ideal, I would like for the system to work automatically.
With snap on tool connected, coolant temp will read 160 normally and boil over at 195-200; which is impossible because coolant boils at 265. I know why my car overheats, because the ECM is reading a lower false temperature so its not telling the fans to come on because it sees the temperature as normal and doesnt need to be cooled, but what I dont know is what is causing the lower false reading? could it be an ECT sensor? or is the ECM itself need to be reprogrammed? I want to know what is causing the false reading.

7 Answers

101,375

Try unhooking your battery for at least ten minutes. This tends to help in some cases.

1 out of 1 people think this is helpful.

thank you, I will give it a try; while we were redoing the heads the battery was disconnected, but since the new thermostat has been in, the battery has not been disconnected.

101,375

Did you properly burp all the air out of the system? If not an air pocket could be where the sensor is located and not actually reading the temp of the coolant. Had this happen on one I put a water pump in last week. Had to burp it three times before it started acting right.

2 out of 2 people think this is helpful.

yes, we used an air compressor to make sure none of the lines were blocked.

101,375

No I mean get all the air out of the system. Only coolant in the radiator, motor, lines, heater hoses and heater core(no air in system). If any air is left in the system it will cause the issue you are having.

2 out of 2 people think this is helpful.
56,575

If the computer is getting a false temperature reading your coolant temperature sensor is bad. HTH. -Jim

3 out of 3 people think this is helpful.
3,435

You have probably bled the system already. For others, there is a coolant bleeder valve on the top left side of the 2.7. Several coolant/heater hoses converge here. The unit contains a sensor, and the air bleeder, it typically fails at 5-6 years, leaking coolant from a seam. Did the purge correct the overheating?

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 2003 Chrysler Sebring overheating 2 answers

    Ok so I just bought this car in Vegas and I live in bullhead. About and hour and a half away. Temp stayed mid range whole drive home. In town a few hours later when it was parked I noticed a coolen...

    2003 Chrysler Sebring LX

    -

    Maintenance & Repair

  • 2009 Chrysler sebring 2.7L , overheating 2 answers

    2009 Chrysler sebring 2.7L , replaced condenser coil (a/c stopped working) replaced all fluids pertaining to cooling system, started overheating, never overheated before changing coil, changed thermos...

    2009 Chrysler Sebring Limited Convertible

    -

    Maintenance & Repair

  • Cranks but will not start 1 answer

    My chysler sebring 2003 overheated on me today all it does is crank

    2003 Chrysler Sebring LX

    -

    Maintenance & Repair

  • Chrysler Sebring Overheating 2 answers

    My daughter has an '04 Chrysler Sebring 4-cylinder with 123k miles. We've had it in the shop several times after it's overheated. It only overheats when on the highway for 15+ minutes at 60-70 mph. ...

    2004 Chrysler Sebring LX

    -

    Maintenance & Repair

Sebring

Looking for a Used Sebring in your area?

CarGurus has 3,722 nationwide Sebring listings starting at $1,994.

ZIP:

Search Chrysler Sebring Questions

Chrysler Sebring Experts

#1 Sparky222
Sparky222
Reputation 2,620
#2 Chris Daigle
Chris Daigle
Reputation 1,870
#3 tenspeed
tenspeed
Reputation 1,430
View All

Related Models For Sale

Used Ford Mustang
691 Great Deals out of 38,146 listings starting at $1,750
Used Chevrolet Impala
950 Great Deals out of 36,331 listings starting at $884
Used Nissan Altima
1,104 Great Deals out of 85,904 listings starting at $1,675
Used Honda Civic
1,147 Great Deals out of 64,596 listings starting at $1,195
Used Toyota Camry
1,500 Great Deals out of 100,455 listings starting at $700
Used Chevrolet Malibu
1,162 Great Deals out of 78,644 listings starting at $2,495
Used Chrysler PT Cruiser
21 Great Deals out of 3,936 listings starting at $1,795
Used Toyota Camry Solara
54 Great Deals out of 1,702 listings starting at $2,089
Used BMW 3 Series
1,775 Great Deals out of 40,587 listings starting at $1,350
Used Chevrolet Camaro
645 Great Deals out of 39,147 listings starting at $2,995
Used Honda Accord
1,188 Great Deals out of 77,674 listings starting at $969

Used Cars For Sale

2009 Chrysler Sebring LX For Sale
54 listings starting at $3,495
2008 Chrysler Sebring LX For Sale
3 Great Deals out of 130 listings starting at $2,200