Where to find info on common rail diesel

Tvertiz · Mar 12, 2014

I know this is a little new for a YT post but need any help possible. Any ideas where to go to find info on why the computer will not send any signal to injector or starter on a 2003 case loader with a fiat common rail diesel motor. Have checked every relay and ripped the machine,all to pieces looking for a bad connection. Here is the real kicker, the local case dealer cannot plug into machine to find out what is wrong. Thus why I am looking to find,info on the,ECM of,this,machine. We have a motor book and a machine service Manuel and full wireing diagram. Everything is controlled right out of the ECM, we even have another machine,that we have swapped ECM with and still nothing.

Dodgeit · Mar 13, 2014

(quoted from post at 22:45:12 03/12/14) I know this is a little new for a YT post but need any help possible. Any ideas where to go to find info on why the computer will not send any signal to injector or starter on a 2003 case loader with a fiat common rail diesel motor. Have checked every relay and ripped the machine,all to pieces looking for a bad connection. Here is the real kicker, the local case dealer cannot plug into machine to find out what is wrong. Thus why I am looking to find,info on the,ECM of,this,machine. We have a motor book and a machine service Manuel and full wireing diagram. Everything is controlled right out of the ECM, we even have another machine,that we have swapped ECM with and still nothing.

You either have bad connections / wiring, or your injectors are shot, or the injector pump is not getting or receiving fuel. first thing to check is if you have fuel pressure on the common rail itself. that will tell you if it's injectors / wiring or fuel. There should be a port on the rail. The pressure can get as high as 25,000 PSI at full throttle, so have enough gage.

Tvertiz · Mar 13, 2014

There is no port on the rail to check pressure, have looked
many times. These are brand new injectors. We were getting
blink codes for injectors and it was running badly thus we
changed injectors. Have read about a imobalizer that gives the
ok to start up but cannot find anything else on machine. It was
running after new injectors then ran ruff now won't even crank.
The whole time it was sitting in the shop. Very well could be
connections, I think today we will get back inside the valve
cover to check injector connections.

jm. · Mar 13, 2014

Look hard at the unit main ground, weak ground can give the ECM a fit.

Donaldinky · Mar 13, 2014

Check to see if u r sucking air on the primary side pump lines filter. Be careful Some of the newer system run over 20000 lbs. and another thing. Check the diesel fuel. Had one just filled up. Ran 3 miles. And quit bad fuel

Donaldinky · Mar 13, 2014

There sure be a crank or fly wheel sensor. That tell it when to fire. See if it is in time. Can u ohm out the connector. Since u have a know running one. To check with just an ideal

Brad Buchanan · Mar 13, 2014

This might sound a little silly but is there an interlock that would prevent the starter from operating? Seat/clutch/gear?

Brad

moresmoke · Mar 13, 2014

Load test the power supply wire to the ecu. Have had a machine that the power wire showed 12v with a tester, but did the same things. The fuse box was rotted out inside and couldn"t carry enough current.

Where to find info on common rail diesel

Tvertiz

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Dodgeit

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Tvertiz

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jm.

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Donaldinky

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Donaldinky

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Brad Buchanan

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moresmoke

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