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Matt, Engineer
Category: Chrysler
Satisfied Customers: 20396
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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Chrysler 300: 2007 chrysler 300 2.7 v6 car cranks and runs

Customer Question

2007 chrysler 300 2.7 v6
car cranks and runs however if i try to accelerate the car does nothing rpm's dont go above 2500. is this a bad filter?
Submitted: 5 months ago.
Category: Chrysler
Expert:  Matt replied 5 months ago.
Hello as this is the diesel and you don't mention any fault lights then yes I'd agree the 1st thing to do is considering fitting a new fuel filter as if only slightly blocked this can lower fuel supply pressure and choke the main pump, the pump will be more sensitive to this when its cold as diesel thickens considerably with low temperatures. If OK then also check the connections to the EGR valve, if either the vacuum pipe of electrical connection are damaged / corroded then the EGR can be on all time which certainly will hurt performance. Its also possible that its a fault with the EGR valve so its worth removing the valve and cleaning it out with brake cleaner, if it looks particularly clogged then replace it.If this is OK then check the small vacuum lines to the turbo and its connected control solenoid on the bulkhead, any cracks or leaks can give turbo issues and its best to have the boost pressure measured actually measured with a boost gauge to check that the turbo is healthy and that the sensor is reading correctly If its a variable vane turbo (they’ll be an actuator on the turbo body - but not a wastegate) then check its vacuum pipework as above and check the connections to the diaphragm / solenoid valve
Customer: replied 5 months ago.
It's not a diesel.
It's a 2.7l v6 chrysler as described in the question.
Next mechanic. Please
Expert:  Matt replied 5 months ago.
Okthanks for the extra information ( and there is a 2.7 ltr turbo diesel variant elswhere in the world if not in the states) in that case this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank. If the connections to the pump are corroded or damaged then the pump could stop at any time or could notbe running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,Ideally measure the pressure at the injectors and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure.

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