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Matt
Matt, Mechanical Engineer
Category: Chrysler
Satisfied Customers: 20598
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My chrysler 300c 08 reg won't start when engine is hot

Customer Question

My chrysler 300c 08 reg won't start when engine is hot
Submitted: 1 year ago.
Category: Chrysler
Expert:  Matt replied 1 year ago.
Hello This could be incorrect fuelling due to a faulty water temp sensor. If this is the problem then the ECU will be leaving the car constantly ' on choke' and not reducing the fuelling as the engine warms - so unplug the sensor and clean the contacts on both sides with some switch / electrical cleaner (not WD40) and inspect the wiring for any signs of damage to the insulation especially where it runs over other components and through the bulkhead- if this doesn't help consider replacing the sensor as they're not expensiveIt could also be an injector leaking fuel back through the overspill pipe, so not getting enough fuel pressure to tell ECU to fire the injectors, this is trickier to find and you’ll need the garage to do a ‘run back’ test to identify which one is the issueLastly it’s also worth considering fitting a new fuel filter as if only slightly blocked this can lower fuel supply pressure and choke the main pump
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Customer: replied 1 year ago.
The 6/12/2015. Is a Sunday can't buy switch on till Monday the 7/12/2015 to see if it cure the fault
Expert:  Matt replied 1 year ago.
understood just get back to me on this post
Expert:  Matt replied 12 months ago.
Hi
do you still need help?
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