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I have a 1995 Mercedes c220 air works in summer but no heat in the winter. Climate control seems to work fine. Has been reset but do not no the proper code to reprogram. Also runs fine in park and neutral but dies when put in reverse or drive. Have changed thermostat and coolant. New fuel pump also.

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  • Cars & Trucks Master
  • 14,036 Answers

No heat problem could be faulty heat control valve or plugged heater core.engine dies could have restricted fuel filter.replace spark plugs and wires see what happens.

Posted on Nov 18, 2013

  • mtebaldi Nov 18, 2013

    There is a module called Blend Door and if this is not working then you will either have hot or cold air. To fix this you may have to have your dash pulled apart. I replaced one on a GMC truck and that was exactly what had to be done.

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  • Cars & Trucks Master
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Probly need a new heater core--------code can be got from a dealer tech--------u may hav a worn torque converter-it doesnt mean u need a new trans

Posted on Nov 18, 2013

4 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1991 ford probe

duck tape on the air intake. I just fixed mine. There is a crack on the intake that lets too much air in when you put it in drive that makes the car stall. Try it it works.

Posted on Dec 24, 2008

  • 6 Answers

SOURCE: no heat

No Blower in Floor Mode
A customer arrives with a 1983 to 1995 Full Size Ford, Lincoln, or Mercury
automobile with automatic temperature control. If the complaint is no blower operation when
the floor mode is selected, the vehicle may have a problem with the thermal blower lockout
switch also referred to as the CELO (cold engine lock out switch).
The thermal blower lock out switch is located in the heater core intake hose. The two
wire switch has a thermal element with a small set of contacts, the contacts are open when the
coolant is below 120°F and closed when the coolant is above 120°F. The thermal blower lock
out switch also contains a vacuum switch, which applies vacuum to the outside/recirculate
valve when the system is in the floor position. When the engine coolant is below 120 degrees
and the selector is set to floor position, the thermal blower lock out prevents blower from
turning on and closes off the outside air during engine warm-up. When the coolant
temperature is above 120 degrees, and the selector is set to the floor position, the thermal
blower lock out switch allows the blower to operate and opens the outside air door.
In order to diagnose this problem, test the thermal blower lockout switch with the
engine at normal operating temperature (above 120°F). Unplug the wire harness connector
from the thermal blower lockout switch. Using a 15-amp fused wire, jumper the harness
terminals to test the switch. If the blower comes on, the thermal blower lock out switch is
faulty. If the blower doesn’t come on, look for an open between the control head selector and
thermal blower lock out switch.
In some cases the blower may continually run even when the engine temperature is
below 120 degrees. Unplug the thermal blower lock out switch and if the blower motor turns
off, the thermal blower lock out switch is faulty. If the motor continues to run, look for a
short to power between the control head selector and thermal blower lock out switch

Posted on Feb 10, 2009

jsmes1027
  • 749 Answers

SOURCE: 2005 GMC Yukon Denali XL - Climate Control issue-

Are you aware of any codes that may stored in the body control module and do you hear a clicking or ticking noise in the rear?

Posted on Nov 02, 2010

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