Question about 1989 Dodge Omni

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Hey my omni wont start at the moment. we replaced the distributor cap and rotor and its not the map sensor what else could the problem be please help

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If the car has current in the plugs and gas coming to the cylinders then it damn well start. Is the car being cranked? if yes, the battery is fine. Check the current in the plugs. The spark should be blue. The fuel pump working?

Posted on Oct 01, 2009


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I have a 92 passat GL that chuggs, jolts, then dies when I shift into 1st. The distributor cap falls down(still clipped in) trashing cap and rotor both. I've replaced cap and rotor 4 times in the last...

If the distributor cap falls down onto the rotor button then you have the wrong distributor cap and it is too big for your distributor. Run fault codes to check for accelerator position sensor fault and check MAP/MAF sensors.

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if its got compression, fuel and spark at the right moment and still doesn't start call ghostbusters. how did you check timing, manually at the cap or with a light? I've never seen a stratus with a 3.0, how did they fit that one in there.

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I need some help with a 97 rodeo.24valve v-6. When bought the truck it had no cat.pipe right to the muffler. It started running really bad I had no power. Code reader said I had abad map sensor so I...

To my knowledge, there is no such thing as a cleaner for an O2 sensor. If it tested bad, it has to be replaced. Are you clearing the codes with the scanner tool? If the codes are not cleared, replacing the parts will have no effect. The computer will think the problem still exists, and will compensate by either reducing power or going into what is called the "limp home mode". If clearing the codes does not make the engine run better, look for other problems, such as bad spark plugs and wires, or distributor cap and rotor. If these items are bad, they will cause the engine to run badly, and they will also trigger trouble codes related to other sensors, such as the O2 sensor. I had a dodge v8 that was running terrible. The scan said I had multiple sensors throwing codes, but replacing them did no good. It turned out to be a bad distributor cap and rotor. The multiple misfires caused by the cap and rotor messed up the fuel mixture causing the codes to set for a bad MAF sensor and MAP sensor. The scanner cannot tell you when the cap and rotor are bad. Only that the engine has multiple misfires.

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1 Answer

My omni doesnt start all the time

It's common for the map sensor on the car to go bad and will cause the problem that your describing. Locate the MAP sensor and disconnect it and see if it starts, if it starts. Then replace the MAP sensor and most of the time it's going to be along the fire wall on your dodge. If there is an Auto Zone in your area, they can do a part locate for your car and show you where it is so you can check for any damaged vacuum tubes to the MAP sensor from the intake manifold, and at worst you may have to replace it and Auto Zone may have the parts on the shelf or they can order it in if it's bad. Auto Zone can also read the code you have to address the issues you car has. Good luck and hope this helps. 

Sep 04, 2009 | 1989 Dodge Omni

1 Answer

1996 dodge stratus..keeps stalling out randomly..then starts up

I posted this response to a similar situation. I am dealing with it now and have narrowed it down to these issues...

The O2 sensor, the speed sensor or the MAP sensor may be one of the problems. The MAP sensor measure the air pressure in the manifold. It is commonly mounted on the fender and is low in cost and easy to replace. To test it if your if your car won't start, unplug the electrical connection from the MAP sensor. If it starts, then you know to replace the MAP sensor. The Hall Effect sensor can fail and not set an error code. This is an inespensive part that sits underneath the rotor in the distributor cap on cars without distributorless ignition. This only applies to cars made after 1996. Also check the fuel injectors and fuel filter.

If you have a burglar alarm, make sure that it is not causing the problem. It often times can cause the stalling issue.

I hope this helps!

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Sounds like you may have a crack in your distributor cap and you are getting condensation under/in the cap.

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