georgheld6
Mercedes CLK engine issue resolved
Summary of the thread
A 2000 Mercedes CLK experienced a check engine light, reduced power, and rough running, with diagnostics indicating an intake air temperature (IAT) sensor error. The issue could stem from a defective IAT sensor or faulty wiring affecting the sensor's signal. After checking the wiring, the IAT sensor was found to be defective and replaced, resolving the engine issues.
Did this summary help you solve your problem?
4 comment(s)
georgheld6 (community.author)
I checked the wiring for damage, but not for continuity. Could a bad signal from the air sensor due to wiring mimic a defective sensor in car diagnostics and error codes?
matsflamme14
Definitely. It's like a doctor getting bad information from a thermometer. The reading is off, but the thermometer might be fine, or the cable could be damaged. Check the wiring with a multimeter before replacing the IAT sensor. I replaced the sensor on my Volvo eventually. If nothing else works, take it to a workshop for deeper diagnostics.
georgheld6 (community.author)
I checked the wiring meticulously, but the IAT sensor was defective. The replacement was 155€. The car runs smoothly now. Thanks for the help.
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
MERCEDES
community_crosslink_rmh_model
CLK
matsflamme14
Sounds familiar. I had a similar problem with my old Volvo, but it was the mass air flow sensor. Check engine light, power loss, the whole deal. The IAT sensor affects the air-fuel mixture, so a bad reading could cause those symptoms. Did you check the wiring?