Question about 1990 Dodge Dynasty

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Dodge dynasty, change relay switch, change fuel pump. car will not stay running

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  • Dodge Master
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Have you tried taking a fuel sample? Next I would time the amount of running the engine does to see if it is consistent with a timer. Some vehicles have a startup circuit and then a run circuit built into the engine module. It is possible for the run circuit to be burned out. It will start, but then die when it changes circuits.

Posted on May 13, 2009

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Feb 03, 2016 | Dodge Cars & Trucks

1 Answer

What if you put in fuel pump and car runs for 2 days and when you go to start the car runs for 3 seconds what can cause that to happen


Sounds like fuel pump relay is not switching from start to run. I recommend replace relay first

Apr 11, 2015 | 1989 Dodge Dynasty

1 Answer

Dodge dynasty will turn over but will not start


check the injectors relay most problems are down to this..... injectors dont go at the same time. also check that the line has pressure there is a vale on the injectors lines for the fuel there is a valve check this has pressure dont do this with the engine running or ignition on as fuel will come out. if no pressure check the regulator & fuel pump relay.

Dec 06, 2013 | 1989 Dodge Dynasty

1 Answer

1989 Dodge starts but won't run


check fuel pump relay, fuse, if ok , fuel pump needs replaced

Aug 31, 2012 | 1989 Dodge Dynasty

1 Answer

92 Dodge Dynasty wont start no spark no fuel


If there is no spark, then there is no signal to crankshaft position sensor. If no power to fuel pump, check relay and power to it.

If you are not getting power to either of them.Then igniitn module or ECM is faulty.

Oct 15, 2009 | Dodge Dynasty Cars & Trucks

2 Answers

1991 dodge dynasty 3.3L-no power to fuel pump & replaced 2 things


fuel pump shut off swiches are normally in the trunk refer to your manual to find out if you have one or not.

Jun 20, 2009 | 1990 Dodge Dynasty

1 Answer

Fuel pressure drops immediately to zero when engine is shut off.


I am not really familiar with the setup there but I'd be looking for a second relay to kick the pump on when cranking.

Jun 05, 2009 | 1991 Dodge Dynasty

1 Answer

1990 Dynasty Intermitent Fuel Pump


Does the pump cycle eventually if you keep cycling the key off/on, without trying to start the car ?

Sep 05, 2008 | 1993 Dodge Dynasty

2 Answers

Turns over then stalls out


either you made a mistake when putting in the fuel pump on or you might just have air in the system or bad fuel pump relay

Aug 26, 2008 | 1990 Dodge Dynasty

1 Answer

1990 dodge dynasty 3.3 engine starts fine but a second later dies changed gas filter and fuel pump and regulator still don't stay started.


Same thing happened to my '89 Dynasty. Turns out the security system was engaged and this stops the motor from running; therefore. a thief cannot drive away with the car! The system is set by using the power locks or an autolock fob, but not by locking manually. Disconnecting the battery will also engage the security system. To disengage, close the driver or passenger (front) door and turn the key in the lock.

Aug 19, 2008 | 1989 Dodge Dynasty

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