The Dispatch | Expert | Scudo Hub

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Posted in the wrong section....Re-posted here.

Hi all, had this van since May 2022 and it's almost destroyed me in time effort and cost.

I expect this van to complete 0-60 in around 13 seconds but it's take anything from 17-20 seconds.  The 1.6 takes 17 seconds!  Yes, it's a 6 year old van and got 180k on it, BUT, it's a 1 owner (Euro car Parts) with 6k or receipts including Turbo, EGR, Air Doser. Clutch etc. in the last 15k miles or back in 2021.  I've covered around 6k miles in 10 months and I've changed MAF,MAP, Crankcase/Shaft sensors, Fuel filter, all 3 solenoids on top of engine, it's been checked for vac leaks with nothing to report (I need to recheck to confirm).  I've also had the EGR off for inspection and it's had a Hydrogen Carbon Clean.  Currently running with Dipetane in the tank.

I have never been in LIMP or had an EML on the dash.

Without going in to too much detail right now, let me say what I can observe daily.   It has NEVER failed to start, but sometimes it turns over and doesn't fire, so I turn off key and try again and it fires right away.

The most telling:  Intermittent No Response from accelerator Pedal for maybe 1 second then it Boosts and goes normal.  (No Fuel-Pedal Position-Turbo sticking?)  I've used REVIVE which produced a large deposit of black oily gunk that leaked from the Turbo out to CAT joint.  CAT looks like new on inspection.

It runs smooth and ticks over fine.   (there can be a rythmic erratic idle that goes away under Electrical load-It's had a recent alternator on too)

Lots and lots of white smoke at startup that clears after 1 minute or so (Leaking Injector or failing Glow Plugs?)

Noisy tapping, ticking, farting on acceleration  (possible leak after Turbo to CAT or Injectors?)

Loses power or boost at higher gears speeds.

Sound changed on acceleration from rough to smooth to rough

Acceleration is not smooth, but not that noticeable either/It can be very subtle.

Uneven acceleration (seems to be a flat spot or several-can sometimes run forward when letting OFF throttle)

It's a lot to take in, but if we just start from....Sometimes there is no response from the Pedal and Code P2566.

Looking for some experienced minds on this.  I'm beat!

The only codes I have from the FAP app:

Low Fuel Pressure at Startup.

P2566 Turbo Copy Position

I've NO CODES on the van itself, however i have a FAP Peugeot/Citroen app that has raised a few issues.

AlvyLad

Member

Registered: 2021-06-11

Posts: 481

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Try to see if exhaust cat isn't blocked by sut or something harder

I'd make an investment in to changing injectors or just a cleaner to start with or to end with, as it sounds more like an obsession you have to achieve a performance from a non-performance vehicle 

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Hi, thanks for stopping by.

It IS a Performance vehicle.  The expected 0-60 is 12.8 seconds for this van.  It is a 2.0 hdi 130bhp.  The 1.6 hdi 0-60 is 17 seconds.  These are official figures offered by Peugeot.

If you read my post again, I have already inspected the CAT and it looks 'Like New'.  Even my mechanic commented on how clean it was considering the mileage.

However, non of this excuses my symptom of 'Intermittent No throttle Response'.

Thanks.

tee_cee

Member

Registered: 2016-03-18

Posts: 633

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Have you checked when the regens are taking place. The trigger to kick the process off is when the calculated soot reaches 5g/l. The backup is to measure the differential pressure across the exhaust. When it hits some predefined level the regen is kicked off. If it is doing this all the time then it could indicate a clogged up exhaust.

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Hi, Tee_Cee yeah it's regenning around every 100-150 miles, but we do far too many short runs daily.   Using the FAP app I can see live data on my phone and even when a regen is taking place.  I can also read the FAP pressure which shows around 3mbar at idle rising to up to 300mbar and full throttle dropping to around 50-60mbar while cruising.  So I'm pretty confident these values are well within the norm? unless you can correct me?

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Have you checked when the regens are taking place. The trigger to kick the process off is when the calculated soot reaches 5g/l. The backup is to measure the differential pressure across the exhaust. When it hits some predefined level the regen is kicked off. If it is doing this all the time then it could indicate a clogged up exhaust.

My main suspected areas are Leaking Injector/s filling cylinders over night and being forced into exhaust DPF upon turning over causing frequent Regn's OR it's simply failed Glo plugs OR even more possibly a consideration of both.

Others things I've considered worn Accelerator pedal causing irregular fuel injection.

Variable Vane/Actuator issue

with with no actual codes on the van (I have Diagbox 7.83 but not all ecus are recognised.  It's been suggested I need later versions?)  I can read live data and see all kinds of info on injectors, air mixer, egr turbo etc, but no idea how to interpret the data.

tee_cee

Member

Registered: 2016-03-18

Posts: 633

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

:With the regen the important thing is that it kicks off at 5g calculated soot. If it kicks off before this then its because the exhaust is getting clogged.

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

:With the regen the important thing is that it kicks off at 5g calculated soot. If it kicks off before this then its because the exhaust is getting clogged.

One step closer to understanding the problems.

the erratic no response appears to be directly linked to the Regen cycle.  I can see Live data on my FAP app when  Regen is taking place.  we do a lot of small journeys around town only and it's Regening around 150miles or so.

But, as well as this my FAP app is suggesting 2 potential problems.  P1497 and P2562.

Something aint right with this Turbo me thinks...

I'mNoExpert

Member

Registered: 2022-08-02

Posts: 24

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Wondering if anyone can see anything obvious on this FAP app for Peugeot Citroen??.

80mph 3000rpm 4th gear I think, could be 5th, turbo only 43%?

tee_cee

Member

Registered: 2016-03-18

Posts: 633

Re: 2015 Expert 2.0 HDI 130bhp Intermittent Throttle Response.

Again 5g/l soot is the trigger for regen