Question about 2003 Dodge Durango

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ENGINE WON'T RESTART AFTER RUNNING NORMAL. Engine will restart when you let cool down. Fuel rail pressure is 46 psi when not starting (hot) and 50 psi when running (cold). I replaced the fuel pump. I took the pressure tester back and did not test new pump pressure.(I know) Engine cranks normal. I don't think it's a ignition problem but could be wrong. HELP!!!

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  • Dodge Master
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Auto choke problem ,try changing the temperature sensor

Posted on May 31, 2010

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Does anyone have suggestions on a 2002 Altima that has vapro lock?


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Why when my cad gets hot that it'll start then die. 30 psi before problem on the fuel rail. 20 psi after the problem and a lot of air bubbles. Then cools down and back to normal


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Car dies once it warms up


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2001 chevy silverado fails to start on random days, 50 psi fuel pressure at test port, a couple of hours later it starts perfectly and does so for a month or so then does it again


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After I drive my wrangler for about an hour it shuts off. There are no noises or sounds to indicate when this is going to happen. Also, the engine temp is normal when this happens. When I try to restart it...


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1 Answer

On hot days when I stop for gas, I shut the car


Fuel pump worn out and is weak, when the fuel is warm the pump expands and the fuel pressure is good. When the colder gas is added or when the gas has cooled down the fuel pump.
The pump can not create enough pressure to run the fuel injector due to the piston and sleeve in the pump are worn out, you might get another year if you lucky by replacing your fuel filer.
Start with the simple and replace your fuel filter and check your fuel pressure readings at the shredder valve on your fuel injector rails. You should have i think 56 PSI to run them properly.
Thank you for using fixya and be safe.

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How to test fuel pressure


I have been working on a simular problem on my daughter's vehicle. with the following additional symptoms. It only fails while hot. Runing fuel preassure checks, I noticed that the preassure rises from 30 psi while running to 40 psi after turning off the hot engine. This is caused by the expansion of the fuel in the rail. I believe that this hgh preassure is causing the regulator to stick closed preventing the fuel to get to the rail during a restart, (as the preassure drops to 0 while the fuel pump does whirrrr during the startup proceedure). It seems to free up after it has cooled then works normally. We ordered a new regulator but haven't received it yet to see if this fixes the problem. There is a possibility that the problem is a weak pump that cannot overcome the stuck regulator but since all the checks are in spec, I'm leaning toward the regulator at the moment.

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1 Answer

Engine starves for fuel after running about 50 miles or so...


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