Shaking & shuddering - bad injector? - Ford Powerstroke Diesel Forum
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post #1 of 25 Old 11-12-2012, 12:46 PM Thread Starter
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Shaking & shuddering - bad injector?

I have a 2005 F-350 with 210000km (135k miles) and this morning the minute she fired up I knew something was wrong. I had an important road trip planned which I couldn't cancel, so I drove 200+ miles today. Rough idle, shaking and shuddering when lugging below 2000rpm. If I'm cruising at 1500 rpm and try and gently step on it, the whole truck just shakes. Tow/haul helped a bit. Above 2000rpm it's not too bad.

I have a Scangauge and there are no codes, FICM is freshly rebuilt by Ed and voltage is 13.5, sometimes it drops to 13 and once in a while briefly to 12.5. The truck is stock except for a 40hp FICM tune, and EGR delete.

Have I lost an injector? Without throwing a code?
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post #2 of 25 Old 11-12-2012, 02:10 PM
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What you describe is what happened when I lost an injector, but I had two codes. Check your ficm and injector connectors.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #3 of 25 Old 11-12-2012, 02:24 PM
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I thought ficm voltage is suppose to be 48v??

2007 f-350
SCT Street tune Innovative Diesel
4 inch straight pipe
Bypass coolant filter, ELC
Edge Insight CS
leveled 2.5
130k miles
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http://forum.bodybuilding.com/showth...post1084303723
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post #4 of 25 Old 11-12-2012, 02:32 PM
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Quote:
Originally Posted by f350powerstroke View Post
I thought ficm voltage is suppose to be 48v??
I'm assuming he is calling out the logic voltage, I shouldn't assume I guess. Good point. Op have you checked the injector voltages?

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #5 of 25 Old 11-12-2012, 03:14 PM Thread Starter
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The main ficm voltage is 48. All the x-gauges I have programmed in my Scangauge seem to be within range. I haven't checked the individual injector voltages, I assume that requires a bit of reprogramming to my Scanguage?

I have another short road trip to do in the morning, will I cause any further damage if I drive it 100 miles like this?
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post #6 of 25 Old 11-12-2012, 03:34 PM
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I was talking about the 48v, you probably have an injector that is not fueling. If it was overfueling, it is not good to run it like that. I hated running mine, it wasn't fueling, I consider that lack of lubrication.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #7 of 25 Old 11-12-2012, 03:57 PM Thread Starter
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Oil change and fuel filters tomorrow........
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post #8 of 25 Old 11-13-2012, 08:37 AM Thread Starter
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So I dropped by the shop and had them read the codes. Why didn't my Scangauge give me these? It said no codes found, did I set it up wrong?

PO265 Injector circuit high cylinder 2

PO266 Camshaft postion sensor circuit range performance

Thoughts?
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post #9 of 25 Old 11-13-2012, 09:45 AM
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Quote:
Originally Posted by cappybye View Post
So I dropped by the shop and had them read the codes. Why didn't my Scangauge give me these? It said no codes found, did I set it up wrong?

PO265 Injector circuit high cylinder 2

PO266 Camshaft postion sensor circuit range performance

Thoughts?
Not sure about the scanguage, if it was me, I'd ohm test the injector coils.......Why you shouldn't drive around with injector codes!

As for the camshaft sensor code.....it may be from the irratic running.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #10 of 25 Old 11-13-2012, 11:04 AM
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the symptons you describe are almost exactly what I had when I lost my injector #5, My check engine light did come on and the scangauge did read the code. I would check the wiring closely, I found on mine that the insulation was worn through. I resoldered the wire and insulated the whole thing really well, but my injector was still out (not sure if the wire issue caused the injector to fail).

When I ohmed out the coils on my injector, one of the coils was way out of wack, I replaced the injector and that problem cleared up.
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