Question about 1991 Dodge Dynasty

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1991 dodge dynasty ran fine when parked a couple months ago, now won't start. turns over but no spark, also has fuel pressure on rail before injectors but plugs are dry after quite a bit of cranking. tried a coil pack, engine control computer and shut down relay off another car but didn't help.it has a 3.3l motor

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Posted on Jan 02, 2017

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SOURCE: chrysler 3.3 vin r v6 mini van, starts then dies

Charlie. You have replaced the ECM on your van?.
Kedwin,, Your problem is, the computer on that 3.3 L.
Need to be programed with the VIN nember of your car.
The Antitheft System will disable the injectors due a incorrect VIN, Bucause the body computer is not recieve the correct pasword between 5 seconds after start up.
YOU have 2 options. 1 get a ALOHA Smith. some of they have the computer required to program ECMs.

The other option is: Get a new ECM from the dealer, They will program if ask for that.

NOTE:::::: Other way is . Put the body control module with the computer from the same car.

OK... I hope this work for yours.
If NOT letme know I can look for more information.
Thank you.

Posted on Jul 17, 2008

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SOURCE: 1991 dodge daytona wont start

sounds like low fuel pressure have it ckecked

Posted on Feb 09, 2009

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SOURCE: 1995 dodge intrepid 3.3L cranks

The injectors are mainly controlled by the good output of an auto shut-down relay which is directly affected by the fuel pump relay straight from the PCM.The easiest way to check the fuel pump relay is turn on the key,wait a minute,and see if the fuel guage comes up to proper level,helps if you know fairly close how much gas you do have.A couple other things which could cause intermittent cranking are the ignition switch may be going bad,or a bad connection in the ignition wire harness but the ignition itself is way more common.Also a near dead battery.The lights will sometimes appear somewhat bright but to start requires lots and lots of power.A good battery should read near 13V.A bad one will read around 11.8,11.9V and could cause intermittent crank.A crank position sensor could cause it,but for the most part,if a sensor is bad the system either works or it does not.That's about all except do you have intermittent start or no start whatsoever,even jumpers?If this doesn't work or you need more help,just comment here and I will get an autolink to your post and reply ASAP.Good luck! Greg

Posted on Oct 16, 2010

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SOURCE: where does the fuel line at the end of the injector rail run to on a 1991 rodeo

All fuel injected systems have a feed line to the engine's fuel rail to keep constant pressure at the injectors fuel entry point. A tiny bit goes into the engine cylinders when the computer allows the injector to open by a signal pulse.
And the rest of the fuel in the rail is pushed by the pump back to the gas tank by a Fuel Return Line (what you are seeing and the other line in all fuel injected systems.
Think about it. The pump is running constantly (with the engine), so to avoid pressure build-up, or having to continually turn the pump on and off, voila, put in a return line after a pressure regulator gets the pressure right in the rail, and let the excess go back to the tank. Pretty good idea: no stale gas left there on top of engine. I hope this helps you understand it better.

Posted on Nov 28, 2011

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Engine shuts down


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1990 dodge Dynasty bad gas mileage and now cutting out real bad. Changed spark plug wires, spark plugs and fuel filter. Ran good for a test run right after installing items. This morning ran fine the 5...


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Sep 27, 2010 | 1992 Dodge Dynasty

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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

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1991 dodge daytona wont start


sounds like low fuel pressure have it ckecked

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2 Answers

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Seems you have done everything right. Not an expert but maybe have the brain checked out..does sound like it is an ignition problem. The only thing I could maybe think of is that the fuel pump is not working correctly..not enough presure.Myself, I would have the brain checked then if you are getting good spark on the number one cylinder I would re-think the fuel pump. Good luck..hope to hear back on what you found.

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