Need mechanically inclined folks"New Update Problem"

Sounds like OP is getting pissed. OP you can borrow from Auto Zone Pep Boys etc, a hand held unit to read the codes. Leave a deposit get it back when you return the reader

Fuses may look good but are actually blown or have high resistance and are garbage. Fuses are cheap so just replace a bunch and see what happens. Relays, same deal. Double check them and smell them for a burned odor or any blackening or smoky signs. Recheck every connection and harness, physically pull or take them apart again and reinstall. Sometimes tiny pins look like they are connected but aren't, maybe they are bent too. Occam's razor, it's something basic most likely. Start at the battery and clean and tighten it up and just work your way back like a forensic detective and examine every connection and fuse.

That's what i was thinking , maybe the new alternator killed it.

Your wiring is wrong. You blew a fuse.

I would go with ignition module for sure if it's not your main ecm. You can get them on e-ba for cheap and working unless u have the cash for new.

Or you blew the hell out of something else.

I tested all the fuse with a tester.

OMG, ok. Pull the ecu and have it tested. Probably better to seek elsewhere but, you're lucky and have found me. Simply pull the ecu and have it tested. NOT BY advance auto or O'Reily's etc, as they make a commission on what they sell you and will tell you that a perfectly good ecu is no good for the commission.

(OR)

If you have (or can get your hands on) a simple multi-meter and - obviously know how to use your computer, you can search various car enthusiast sites for your car and they will give you the specs on the ecu.
This lets you test the ecu for yourself. You simply cross certain links and observe the readings. If they are all within specs you're good. If not, hook-up with your local junk yard and replace it on the cheap. Or, search "discountautoparts" and you will find a place I've used for parts on the cheap which are the same as you'll get at advance, etc only they will be 1/3 the price.

Keep in mind that it's a 1994 Chrysler. Just sayin. The ecu is about $100 from the right source. If all else is good but the money flow then it's probably worth it.

Hope this helps.

would that stop the power to the fuel pump?

Btw if it is your main that went then something caused that as well, Your new alt should not have done anything but your old one going out could have caused issues. Just double check the wiring on the new alt to make sure since that was last touched. But strongly think your ignition control module went. They are quick and easy to replace sometimes u can borrow 1 just to see.

As far as not supplying to your pump I'm sure it varies. But if your not getting spark your pc should not let your car fill with gas. I just went through this replaced everything and was avoiding the Ignition module cuz the price I got great deals on everything else finally after 2 months found the module for 10 bucks free shipping popped it in and vroom.

thanks for the help everybody....


Ill keep this thread near when i start messing with it again next weekend.

OK...if they are 100%...and you are sure.

Next get a digital voltmeter if you don't have one.
...they are cheap these days.
[link to www.northerntool.com]

...give the fuel pump 12 volts from the fusebox and see if you can make it spin. You should be able to hear it.

If that works/ tests ok, and the lines to the coil are testing all OK and not burned, I'm going to start leaning toward the ECU as being the problem too. Others have mentioned that already as well.

Here's a link to some.
You need to get the numbers off the old one to match it up with the new one.

[link to www.partsgeek.com]

Last Edited by Useless Cookie Eater on 01/20/2013 10:34 PM

what if i cant find the right part number?

There is USUALLY a white "OE" (Original Equipment) tag on every ECU. Some of them have barcodes on them as well.

If not, the OE part number will be stamped on the plastic itself.
That is the part/model number you need.

Last Edited by Useless Cookie Eater on 01/20/2013 10:46 PM

I would check to see if this car has the safety shut-off in the trunk it kills the fuel pump if rear ended. Should have a reset you can push.

Yes all the ones iv looked at aren't the same number .

I don't follow what you are saying.
There is only one OE part number that ECU unit in your car that will match the potential replacements.

Give me / post ALL the numbers on the ECU.
If you can't see them all....pull / take the ECU out.

Last Edited by Useless Cookie Eater on 01/20/2013 10:59 PM

NEW PROBLEM

Ok What would cause the injectors to not be getting power?

The wire harness that that leads to the injectors has fire.

The car wants to start when using starter fluid.

So its not getting gas.The fuel pump is working.
I replaced the ecm and its all good.

I cant get any fire on the injector plug while trying to start the car.

Last Edited by <x> on 01/27/2013 02:11 PM

come on i need some help..... I thought maybe bad gas ...


But the no power to the injectors is confusing me.

they should light up a light tester right?

Last Edited by <x> on 01/27/2013 02:10 PM

Did you replace the ECU ?

If its the anti theft shit im going to beat the car with a sledge hammer , then dump it off a Chrysler.

yes .. now everything has fire . other then right at the injector plug.

Have you tried disconnecting the battery for 30 seconds and then reconnecting it. I had one vehicle (different than yours) that needed that because one sensor was blown and every time I shut it off it would not start again (but would turn over) until I did the disconnect thing.

If you have an old injector you can hook it up and crank the car to see if it is working, just like you can with a spark plug.

I don't have any idea about Chrysler / Mopar alarm systems though.

Last Edited by Useless Cookie Eater on 01/27/2013 02:16 PM

mass flow air meter or some name liek that - its normal, your car works one moment, and stops working the next moment, turn over for days, starts with starting fluid, and NO fuel given to engine (engine cannot sens air flow and does not know how much gas to mix into the stream of air it CANNOT SENSE anymore, so. it stops.


mass air flow meter.

[link to www.ehow.com]

yes

Park it where you can let others take a swing for a few bucks. (make them wear safety glasses)

no shit?

I did not know that.

[link to www.ehow.com]