beclawrence007 wrote:Hello,
I have a ford transit, 2011. 4 cylinder manual, 150k km.
This issue is driving me nuts and no mechanic is really taking it seriously.
So, for some history I believe I got some bad diesel in January or something electrical was damaged by water, as I was in a huge storm in my van at the beach. The day after that storm the car started to hunt at idle, in general was louder but still drove good and has no power loss or smoke.
Back in January when it started I put in a diesel bug killer and that made the hunting go down a lot but it came back and eventually a mechanic listened and changed the scv. BUT after the scv and the fuel filter was changed the car now idles a lot worse, it is a lot louder, vibrated and has a slight shake you can see in the engine. Another weird symptom after the scv change is the car takes like 3 times longer to warm up.
The vibration/idle shake is worse when it is hot.
It also has a glow plug circuit code and a GB module code. But it had those before the scv was changed, so I suspect something fuel related, but maybe it is electrical?
I had the fuel pressure checked at idle was normal
Does not hunt or sputter or loose power.
Today a new mechanic checked the live data on his scanner and the cylinder contribution was all over the place. One was -600 and one was +500 something, the other two were between 200-300.
This was at idle when the engine was at operating temp.
So I am wondering if anyone has any ideas about what this could be. Could it be electrical or fuel related?
What should I get tested
I am wondering if it is the ecu messing up the fuel delivery? Bad wiring or something?
I would love some opinions
Thanks
Bec
knobby1 wrote:beclawrence007 wrote:Hello,
I have a ford transit, 2011. 4 cylinder manual, 150k km.
This issue is driving me nuts and no mechanic is really taking it seriously.
So, for some history I believe I got some bad diesel in January or something electrical was damaged by water, as I was in a huge storm in my van at the beach. The day after that storm the car started to hunt at idle, in general was louder but still drove good and has no power loss or smoke.
Back in January when it started I put in a diesel bug killer and that made the hunting go down a lot but it came back and eventually a mechanic listened and changed the scv. BUT after the scv and the fuel filter was changed the car now idles a lot worse, it is a lot louder, vibrated and has a slight shake you can see in the engine. Another weird symptom after the scv change is the car takes like 3 times longer to warm up.
The vibration/idle shake is worse when it is hot.
It also has a glow plug circuit code and a GB module code. But it had those before the scv was changed, so I suspect something fuel related, but maybe it is electrical?
I had the fuel pressure checked at idle was normal
Does not hunt or sputter or loose power.
Today a new mechanic checked the live data on his scanner and the cylinder contribution was all over the place. One was -600 and one was +500 something, the other two were between 200-300.
This was at idle when the engine was at operating temp.
So I am wondering if anyone has any ideas about what this could be. Could it be electrical or fuel related?
What should I get tested
I am wondering if it is the ecu messing up the fuel delivery? Bad wiring or something?
I would love some opinions
Thanks
Bec
When the SCV was replaced, were the pump, pilot & injector learns completed successfully..?? If not it will never run properly. Was the SCV a "genuine Ford or Denso item"..?? If not you'll probably be doing it again soon, non-genuine valves don't seem to play well with the system.
Do you know what the FRP is during cranking and at idle..?? Have the injectors had a "leak-off" test..??
Lord Knobrot
Jim Archer wrote:Any oil or dampness around the injector seals in the head cover? Does the engine 'breathe' heavily and sound louder if you remove the oil filler cap when running?
Blowing injector seals - the Copper washers that seal the combustion - can do weird things to the idle fueling/injector balance.
Jim
Jim Archer wrote:Any oil or dampness around the injector seals in the head cover? Does the engine 'breathe' heavily and sound louder if you remove the oil filler cap when running?
Blowing injector seals - the Copper washers that seal the combustion - can do weird things to the idle fueling/injector balance.
Jim
marcrbarker wrote:Cylinder contribution inbalance, hunting on idle, shake vibration, and one point got worse after got it back from mechanic? hmmmmm.. and the engine management trying its best to compensate. something around the clutch with am imbalance . and glowplug I'll guess also there's a shake while driving low revs in top gear. This all sounds like the effects of something and usually that's what we do human nature usually address the effects not necessarily consider the cause. And of course the ECU will be trying to fight the issue and it can be blamed for acting weird. To me sounds like primary cause is a lack of compression on one cylinder.
Day after a heavy rain storm it all started? Puddles of water gathering inside the engine bay? Hope it wasn't water ingress into air intake that would bend a rod and cause a lot of that but would also cause some white smoke I would had thought. I hope it's just a failed injector seal washer and nothing else
marcrbarker wrote:Cylinder contribution inbalance, hunting on idle, shake vibration, and one point got worse after got it back from mechanic? hmmmmm.. and the engine management trying its best to compensate. something around the clutch with am imbalance . and glowplug I'll guess also there's a shake while driving low revs in top gear. This all sounds like the effects of something and usually that's what we do human nature usually address the effects not necessarily consider the cause. And of course the ECU will be trying to fight the issue and it can be blamed for acting weird. To me sounds like primary cause is a lack of compression on one cylinder.
Day after a heavy rain storm it all started? Puddles of water gathering inside the engine bay? Hope it wasn't water ingress into air intake that would bend a rod and cause a lot of that but would also cause some white smoke I would had thought. I hope it's just a failed injector seal washer and nothing else
beclawrence007 wrote:marcrbarker wrote:Cylinder contribution inbalance, hunting on idle, shake vibration, and one point got worse after got it back from mechanic? hmmmmm.. and the engine management trying its best to compensate. something around the clutch with am imbalance . and glowplug I'll guess also there's a shake while driving low revs in top gear. This all sounds like the effects of something and usually that's what we do human nature usually address the effects not necessarily consider the cause. And of course the ECU will be trying to fight the issue and it can be blamed for acting weird. To me sounds like primary cause is a lack of compression on one cylinder.
Day after a heavy rain storm it all started? Puddles of water gathering inside the engine bay? Hope it wasn't water ingress into air intake that would bend a rod and cause a lot of that but would also cause some white smoke I would had thought. I hope it's just a failed injector seal washer and nothing else
Also apparently not misfiring
They really think it is just the clutch in balance affecting the sensor sending wrong info to ecu
But maybe more than one thing I suppose.
knobby1 wrote:beclawrence007 wrote:marcrbarker wrote:Cylinder contribution inbalance, hunting on idle, shake vibration, and one point got worse after got it back from mechanic? hmmmmm.. and the engine management trying its best to compensate. something around the clutch with am imbalance . and glowplug I'll guess also there's a shake while driving low revs in top gear. This all sounds like the effects of something and usually that's what we do human nature usually address the effects not necessarily consider the cause. And of course the ECU will be trying to fight the issue and it can be blamed for acting weird. To me sounds like primary cause is a lack of compression on one cylinder.
Day after a heavy rain storm it all started? Puddles of water gathering inside the engine bay? Hope it wasn't water ingress into air intake that would bend a rod and cause a lot of that but would also cause some white smoke I would had thought. I hope it's just a failed injector seal washer and nothing else
Also apparently not misfiring
They really think it is just the clutch in balance affecting the sensor sending wrong info to ecu
But maybe more than one thing I suppose.
DMF isn't failing is it..??
Lord Knobrot
knobby1 wrote:beclawrence007 wrote:marcrbarker wrote:Cylinder contribution inbalance, hunting on idle, shake vibration, and one point got worse after got it back from mechanic? hmmmmm.. and the engine management trying its best to compensate. something around the clutch with am imbalance . and glowplug I'll guess also there's a shake while driving low revs in top gear. This all sounds like the effects of something and usually that's what we do human nature usually address the effects not necessarily consider the cause. And of course the ECU will be trying to fight the issue and it can be blamed for acting weird. To me sounds like primary cause is a lack of compression on one cylinder.
Day after a heavy rain storm it all started? Puddles of water gathering inside the engine bay? Hope it wasn't water ingress into air intake that would bend a rod and cause a lot of that but would also cause some white smoke I would had thought. I hope it's just a failed injector seal washer and nothing else
Also apparently not misfiring
They really think it is just the clutch in balance affecting the sensor sending wrong info to ecu
But maybe more than one thing I suppose.
DMF isn't failing is it..??
Lord Knobrot
amlav wrote:Not sure what do you mean about the glow plugs are blown . The way glow plugs are build : there is a central rod that is inserted in a carbon layer and than the lot is contained in an metal outer sleeving . When power is applied the central rod gets +12 v and the carbon inside being conductive will start heating up . Now if the glow plug is split (blown) inside the cylinder than the carbon residues of the central rod will be falling in to the cylinder and could do a bit of damage . Sometimes the central rod or part of it can also break away due to the constant heating at start up and it sort of burns away in pieces . All this should not be a problem as long the sleeving is still intact .
Also the carbon layer on the central rod burns away in time and the engine vibration will make the central rod to vibrate and touch the sleeve creating a short circuit on the glow plug .
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