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Dodgerench, ASE Certified Technician
Category: Chrysler
Satisfied Customers: 3385
Experience:  30+ years Dodge/ Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
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Etc light came on. Possible needs recalibrating. How can we

Customer Question

Etc light came on. Possible needs recalibrating. How can we tell?
JA: How old is your battery? Have you checked the bulbs?
Customer: Battery is at least 6 years old. Have not checked the bulbs. By the way which bulbs?
JA: What is the model/year of your Chrysler?
Customer: 2006 Chrysler 300
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Dropped it off at the mechanic last night. AFRAID of being ripped off.
JA: Anything else you think the mechanic should know?
Customer: Recent tune up and oil change
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chrysler Mechanic about your situation and then connect you two.
Submitted: 3 months ago.
Category: Chrysler
Expert:  Dodgerench replied 3 months ago.

Hi, welcome to JustAnswer!. This is Ed.

If your 300 happens to have a 2.7 or 3.5 engine, a tune-up requires removal of the upper intake plenum, which often results in a vacuum leak at the EGR transfer tube. A vacuum leak will be detected by the engine management system, turning the ETC light on and severely de-rating the engine, causing severe loss of power and throttle response. Chances are very good that the EGR tube seal is torn at the point where it enters the intake plenum, causing the issue you've described.

A leaking intake plenum gasket can also cause this sort of problem, but you'd be likely to have cylinder misfire at load speeds. Leakage at the EGR transfer port will be shared equally among all six cylinders, simply resulting in engine speeds higher than expected, which triggers the ETC lamp and loss of power. Either way, it's a good bet that there is a vacuum leak in the upper intake area.


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