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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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ECM-26B0 Injector Power Signal too highViews : 11226 Replies : 24Users Viewing This Thread : |
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Feb 2nd, 2023, 10:33 | #21 |
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Feb 2nd, 2023, 14:37 | #22 | |
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Quote:
PN/ 30765321 x 8
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My comments are only based on my opinions and vast experience . |
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Mar 26th, 2024, 15:16 | #23 |
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Last Online: Apr 5th, 2024 15:13
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I guess i will also ask in this old thread.
2006 xc70 with D5 185hp here. Same issue for me, i keep getting Injector 5 signal too high. First time it happened i was driving, but now its happening on every cold start. What confuses me is that if i use vida and clear the code, the car is running normal until next cold start. When its running while the fault is present, its running really rough, like it has air in the system. Vida also gives me a code with low fuel pressure that seems to come at the same time as injector 5. I have not changed the terminal yet, since i first now read about that, but i have looked at the loom around 8 inches in, i found some cracked wires that i changed out but it didnt help. Is the repair terminal my first step as well? i think i should look more into the loom while waiting for the terminals, where do the injector wires go, to the ecu? Thanks in advance for help and advice |
Mar 27th, 2024, 19:31 | #24 |
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Last Online: Yesterday 22:00
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Location: Manchester
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also consider the fuel pressure regulator.
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Apr 5th, 2024, 15:12 | #25 |
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Last Online: Apr 5th, 2024 15:13
Join Date: Apr 2023
Location: oslo
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Hi again
I need some help. I have changed the terminals on injector 5, also went thru the entire loom. Fuel correction looks good, i ohmed all the injectors they all came out at 0.6ohms. I found a fault on the sensor or regulator or whatever it is on the right side of the fuelrail, it actually was leaking internaly. Changed this, car still had a long cranktime. Changed the terminals on the injectors yesterday, car started right up with no errors, ran smooth. Today it also started up fast and ran smooth, but still triggered low fuel pressure, signal too high and injector 5 signal too high. I noticed that the fuel pressure was like 480000 hpa while nominal value was like 360000 hpa, is this a clue? after i cleared the codes, fuel pressure went down to about same as nominal value. Im starting to think its fuelpressure triggering the injector fault, but maybe thats a mistake? could it be the fuel pressure sensor since its allowing too high pressure when cold? thats the left on on the rail isnt it? or could it be the regulator near the hp pump? or any other suggestions? The current to the fuel pressure regulator i also wonder what should be, mine reports around 400-500ma. A pain to troubleshoot this since it only happen once a day or every other day. Im attaching a couple of screenshots, note that of the fuel pressure i took after clearing the codes. I have also asked for help on another forum, at this point i need all the help i can get. |
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