TD5 No power and Vibrating badly

**DCOA** · 27th June 2015, 04:24 PM

Hi folks I know it will seem like a question that has been asked a million times yet I have tried most things and am Fairly out of ideas.

99 Disco 2 TD5 with 350k on the clock

Was driving fine last weekend no signs of anything odd, Monday morning left for work and it was shuddering badly and was struggling to get up a hill at over 40kph.

So far it seems to have good days and bad days. The issue doesn't go away but is much more prevalent sometimes.

So far I have done:

Bypass boost Modulator

Replace intercooler pipes with new silicone ones (Old ones were stuffed but new ones improved running but did not stop issue)

Scanned for Codes (None logged)

Tried combination of running with Maf / map unplugged and no change (although live data showed that MAP was a bit all over the place)

Wastegate actuator is free and working

Check red plug for oil, oil present. Cleaned and injector loom replaced. ECU inspected for Oil, none present. No improvement.

Drained fuel filter and bled system (No signs of water or excess crap in filter)

Really running out of ideas of what to chase.
The problem feels like a bad misfire and you can definitely smell unburnt diesel.

Any ideas what I can try and check now.

**Rupert Prior** · 27th June 2015, 05:20 PM

if you are around the Bexley area give me a ring and i will have a look. (it is what i do for a living), regards Rupert 0421509083

**Outback 1** · 27th June 2015, 05:44 PM

fuel pump may be on its way

**rangieman** · 27th June 2015, 06:13 PM

Originally Posted by Outback 1

fuel pump may be on its way

x2

**DCOA** · 27th June 2015, 06:33 PM

It has been on my mind also just seems weird that I can small unburnt diesel like its not using what it is getting.

**northiam** · 27th June 2015, 07:01 PM

Check engine wiring loom between injector loom connector on head and red plug. Some are know to wear thru pipes and components especially if you have ace.
Regards

**DCOA** · 27th June 2015, 07:07 PM

Originally Posted by northiam

Check engine wiring loom between injector loom connector on head and red plug. Some are know to wear thru pipes and components especially if you have ace.
Regards

Checked continuity and was all good

**sierrafery** · 27th June 2015, 07:17 PM

Originally Posted by DCOA

.....
Scanned for Codes (None logged)

Tried combination of running with Maf / map unplugged and no change (although live data showed that MAP was a bit all over the place)
.....

IMO worths a try with a known good or new MAP then cos the fact that the reading is erratic and no change with it unplugged is suspect...

also did you read the fault codes after that experiment? ...if yes and no codes double check with other kind of tester too cos if you drove it with those sensors unplugged there MUST be air flow(MAF) and boost(MAP) related fault codes logged and if still no codes the problem might be with your ECM

**DCOA** · 27th June 2015, 07:20 PM

Originally Posted by sierrafery

IMO worths a try with a known good or new MAP then cos the fact that the reading is erratic and no change with it unplugged is suspect...

also did you read the fault codes after that experiment? ...if yes and no codes double check with other kind of tester too cos if you drove it with those sensors unplugged there MUST be air flow(MAF) and boost(MAP) related fault codes logged and if still no codes the problem might be with your ECM

Yeah I had no codes before I unplugged them but after they were there. cleared them

**DCOA** · 30th June 2015, 09:44 AM

Thanks for the help all.

Fuel Pump was culprit. was reading 0 on the fuel pressure gauge. New pump and it's good as new.

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