Wont start when warm.

Asked by Jan 05, 2015 at 06:42 PM about the 1999 Chrysler 300M 4 Dr STD Sedan

Question type: Maintenance & Repair

Have no problem with winter. But
when summer comes, my car wont
start after being parked for about
twenty minutes. Once it starts it idles
ruffly for about a minute than it
stabilizes. I drive about 40 minutes to
the food store. Go in, fill the cart. Go
to my car then that happens. Not
every time but always in the 80℉ and
up summer. Gas pump replaced last
month. Engine recently restored.

2 Answers

13,985

When this happens were you running the A/C? If so try not running the A/C and see if it still does it. If you have a fuel pressure tester I would hook up to the fuel rail and see if your fuel pressure drops after you shut it off. If it does you might have a leaky injector or bad check valve in fuel system. The pressure should be at about 60 when you turn the key to start then drop down to 50 or so. What might be happening is the heat from engine is a leaky injector is letting the pressure leak into that cylinder and flooding it out until its running for a few seconds.

A/C on off makes no difference. Fuel pump was replaced a couple months ago so how can i check the injectors???

Your Answer:

Chrysler 300M Experts

  • #1
    Jearod Leet
    Reputation
    500
  • #2
    Felix Melendez
    Reputation
    440
  • #3
    aztec626bf
    Reputation
    400
View All

Related Models For Sale

Used Chevrolet Camaro
233 Great Deals out of 27,353 listings starting at $2,077
Used Ford Mustang
260 Great Deals out of 37,871 listings starting at $1,350
Used Chevrolet Impala
384 Great Deals out of 25,757 listings starting at $950
Used Jeep Grand Cherokee
978 Great Deals out of 76,794 listings starting at $900
Used Nissan Maxima
211 Great Deals out of 16,570 listings starting at $1,650
Used Honda Accord
566 Great Deals out of 103,984 listings starting at $950
Used Chevrolet Malibu
489 Great Deals out of 51,744 listings starting at $1,995
Used Toyota Camry
759 Great Deals out of 73,415 listings starting at $1,195
Used BMW 5 Series
423 Great Deals out of 16,658 listings starting at $2,000
Used Chrysler Concorde
128 listings starting at $2,888

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.