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i have a 04 f-650 with the c7 serial # XXXXX It would

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Answer 1

Answered in 7 minutes by:

4/29/2014

Technician: Cat Man, Cat Engine Expert replied 9 years ago

Cat Man, Cat Engine Expert

Category: Medium and Heavy Trucks

Satisfied Customers: 10,344

Experience: I am ASE Master Truck Certified.

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Hi. Thanks for asking your question and requesting me. I will try and help you out.

Yes I agree you may have a faulty ECM/computer. I have seen this before.

Whenever a computer has codes for all the injectors, it normally indicates the injector driver module in the ECM/computer has failed. I see this a lot. The module inside is not servicable. The ECM must be replaced.

Please reply back if you need more help or have more questions. I am happy to assist.

Answer 2

Technician: Cat Man, Cat Engine Expert replied 9 years ago

Thanks for the update.

Code 58 is defined as a Data link fault. This is either a programing issue or wiring issue. This can not keep the engine from running.

Code 27 is defined as a coolant temp sensor fault. Most likely a faulty coolant temp sensor. This also cannot keep the engine from starting.

Code 49 is an inlet heater fault. Most likely a blown fuse and the heater is getting no power. This can not cause a no start.

Code 26 is barometric pressure sensor fault. Also can not cause a no start.

Code 15 is a faulty injection actuation pressure sensor fault. This CAN cause a no start.

Code 25 is a Boost pressure sensor fault. This can not cause a no start.

Code 28 is a pedal sensor fault. Can not cause a no start.

Many of these codes may have cones from when the ECM was programmed.

Let me know if you need more help.

Answer 3

Technician: Cat Man, Cat Engine Expert replied 9 years ago

Thanks for the information.

If the light is not on when running. There is no active code.

63 psi fuel pressure is plenty to run. The check engine light should be on if there were a problem with the injection actuation pressure. Since it is not, I suspect that system is OK.

There are only two other things I would suspect.

One is faulty injectors. This is rare unless there had been contamination dumped in the the fuel. Normal failures of injectors is not normal.

Second is a cam gear problem. I has seen the cam gear walk off the cam shaft and chase the engine ECM to lose rpm signal. When this happens, you may not have a code in the ECM.

Answer 4

Technician: Cat Man, Cat Engine Expert replied 9 years ago

Thanks for the info.

If the coolant level is good and temp and oil pressure. Since the red light comes on, one if these sensors may be faulty. I would try and get the Prolink to read the codes. That's the best way.

Answer 5

Technician: Cat Man, Cat Engine Expert replied 9 years ago

Thanks for the information.

The 94-3 is an open fuel pressure sensor circuit. This will not cause the engine to shut down.

Let me know if you need more help.

i have a 04 f-650 with the c7 serial # XXXXX It would

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