Where is it? its not my car and im going to check it out for my friend, havent even looked for it but i figure someone will know. im doing this because the heat is not working unless you are accelerating.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
engine and year, good. a first here...
my guess, its AF , antifreeze , smell it? sickening sweet. bingo
the core is leaking, look for Green AF at passengers foot
and under car, at A/C drip tube....
if im right its a big job.
change AF every 2 years, and this will never happen again.
ive run jeeps for 250k miles, many; and not one ever blew a core.
All AF goes to ACID as it ages , and eats the core to death.
8hr labor too.
easy. its just a few checks.
1: engine must be at 180F or more, Scan tools are best here.
2: the blower must at least work at full speed on high.
3: the air must flow through the heater core, or there will be no heat.
#3 can fail if the dampers are stuck. the FSM covers this in great detail
as does. alldata.com. log in and read.
The heater core is located on the passengers side of the vehicle inside the air box. Dash removal is necessary to replace the heater core. You should see two rubber lines going into the firewall around the upper corner on the passengers side.
Jeeps are notorious for having broken temperature control (Blend Air) doors. A malfunctioning Blend Air Door actuator probably caused it to break. The dash will have to be removed to replacethe door and the door actuator.
you could also be developing a heater core leak. if you start seeing fluid on the carpet or windows fog on the inside when defrosters are on, you got trouble. better to fix the problem now then in the middle of winter.
Check anti-freeze level and thermostat first.If not, there's some electronic/computer/sensor ********! I once replaced a heater core in a friends car only to find out she was low on anti-freeze the whole time but not enough to send an alarm or blinking light. You can have flucuations in heat when engine exurts pressure wi'll driving and while idling.
Yea, theres an air bubble in your coolant system. Check your coolant level, and top off the fluids.
When your jeep is going down the road the water pump is cycling the coolant, but when you are idling there isnt enough spin on the water pump to push enough coolant to compensate for the air in the system