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[Engine] Engine vibration at ~1,500 rpm (all gears)
#51
I had a horrible vibration at exactly 1500 rpm but it's more noise than movement in the body. My work site is huge and I have to drive at 15mph there on all roads so at 1500 in second is exactly 15mph. I traced the vibration noise to the air box, more exactly the pipes to and from the airbox. I disconnected the intake pipe from the air pickup and the filter box, and the noise is gone. I put it back, the noise is back. Still to sort it properly. The noise is so loud, people up the road turn and look!

I also get a bad clutch judder if pulling away slowly with the van loaded, at the same rpm, so bad that the whole van jumps.

So, I think the HDi has a natural vibration at that rpm and in your case it could be a bad engine mount.
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#52
(18-10-2020, 07:22 AM)cancunia Wrote:  
(17-10-2020, 10:26 PM)Thisisnotaspoon Wrote:  Just read through the thread as my new (to me) 2.0 HDI does something simiar at about 1850rpm. I noticed it as the M4 50mph limit sits at that in 5th gear. Drop to 4th and it goes away. Shift back to 5th and it builds, you can feel it over a period of seconds build untill the whole car is oscillating. Accelerate over 2000rpm and it goes again.

Might have to take it out at night on some quiet roads and see if I can replicate it in other gears.

My 2.0 did something similar at 50mph in 5th & 40mph in 4th, although it was not a major issue in mine. Changing the MAF (for a different reason) seemed to solve the problem. I can't remember if I mentioned it in this thread, if so apologies for the double post!

I did think of the MAF, possibly the engine trying to transition from  NA to the turbo and getting stuck oscilating between the two?

It feels like when you're driving down the horrible concrete sections of motorway and you get the washboard effect. Could be engine mounts, or could be the whole suspension is just tired.

Part of me (the part that has an MG Midget semi permenantly in bits) wants to go through the car and fix everything so its perfect.

The other part has to keep reminding me I bought it for £650 as I needed van sized transport for a job and it's only going to make me money if I dont keep spending money on it ?. If it lasts past ~15,000 miles between now and April it's a bonus. If it works as a mini-campervan next summer untill the cambelt is next due I'll consider it to have done very well!
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#53
I think it is the third (rear) lower engine mount, as I had an oil catch can that I had to mount on the metal above the radiator. I also had a silicone hose going from the oil catch can to the crankcase breather.

To cut the story short, basically the silicone hose was acting as a stabiliser to the engine as it was linked to the overall chassis of the car. When I had this, the vibration was almost unnoticeable. I also have the other two mounts replaced. I think Brajo had a suggestion to put a rope around the engine and see if the vibration disappears, but the silicone hose was doing the same job.

I will have to see how to cut the metal sleeve and stick a new poly thingy inside.
smile, you are alive! Peugeot Partner Escapade (same as M59, but with offroady-ish look) 2007, 1.6HDi 92
https://www.youtube.com/c/moremolecules
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#54
On PUG 405 lower engine mount I used this method to cut metal sleeve of engine mount.
I don't know if it is possible to do on berlingo , but you can try.

Take small metal saw. 
   

Then disassemble the saw. Put the metal teeth trough the engine mount.
Assemble metal teeth backward. See pic. Then the whole saw is "hanging"
downward. Than cut the sleeve carefully. Like you are cutting "pipe" from inside
out. After you cut it you can push it out easy with your hand.

Best regards,
brajomobil
[-] The following 1 user says Thank You to brajomobil for this post:
  • saskak
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#55
(19-10-2020, 07:40 AM)brajomobil Wrote:  On PUG 405 lower engine mount I used this method to cut metal sleeve of engine mount.
I don't know if it is possible to do on berlingo , but you can try.

Take small metal saw. 


Then disassemble the saw. Put the metal teeth trough the engine mount.
Assemble metal teeth backward. See pic. Then the whole saw is "hanging"
downward. Than cut the sleeve carefully. Like you are cutting "pipe" from inside
out. After you cut it you can push it out easy with your hand.

Best regards,
brajomobil

Thanks Brajo,

I had a look and that's how I thought of doing it, but the exhaust is too close to the mount. I think I have a junior hack saw and will have to do it with small movements.
smile, you are alive! Peugeot Partner Escapade (same as M59, but with offroady-ish look) 2007, 1.6HDi 92
https://www.youtube.com/c/moremolecules
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#56
OK, finally after so many years managed to find what was causing the vibrations at ~1,500rpm (1.6HDi; 90bhp; M59; 2007). I am posting just for completeness, in case someone else has the same problem.

I was doing a once over of the car to see if it is not leaking here and there or something is amiss. I noticed that the top rubber stopper/dampener on the intercooler was missing. So, the intercooler was just leaning (on the top) on the plastic frame of the engine. I replaced it with a makeshift rubber stopper and a nut on the bolt, but will have to buy one of the fancy PSA parts one day.

Quite surprising the whole engine stopped vibrating at ~1,500rpm, there is like this slight almost imperceptible shake, but I would say ~5% of what was before. My rubber stopper/dampener was just small rubber piece and I suspect with the proper thicker PSA one there will be nothing.

So, the intercooler must be shaking quite a lot when the turbo kicks in, otherwise these vibrations would not be there. I suspect a gust of air suddenly getting compressed in there moves the intercooler quite a bit and that was being translated to the whole car.
smile, you are alive! Peugeot Partner Escapade (same as M59, but with offroady-ish look) 2007, 1.6HDi 92
https://www.youtube.com/c/moremolecules
[-] The following 1 user says Thank You to saskak for this post:
  • brajomobil
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#57
PIC would be great. 
Worth thousand words.  Smile

Best regards,
brajomobil
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#58
(06-04-2021, 08:41 AM)brajomobil Wrote:  PIC would be great. 
Worth thousand words.  Smile

Best regards,
brajomobil

Yes, true. Here is one attached. The bolt had snapped, so in addition to the rubber piece that I put there, I had to improvise for the nut as well, hahaha. I might have to drill this bolt out and replace it with a longer one.

   

The original looks like this:
   
smile, you are alive! Peugeot Partner Escapade (same as M59, but with offroady-ish look) 2007, 1.6HDi 92
https://www.youtube.com/c/moremolecules
[-] The following 1 user says Thank You to saskak for this post:
  • brajomobil
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#59
Tnx for pic.
True DIY  Wink

Best regards,
brajomobil
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#60
I think that got solved at the end and it was not the intercooler shaking/vibrating, although it was contributing. After fixing the intercooler the vibrations kind of returned, not as strong but still there.

I had a post about Wynn's diesel injector cleaner a few days ago (https://www.berlingoforum.com/thread-21371.html) that indeed cleaned to some extent the injectors in my 1.6HDi. From my fuel leak-off testing, it turned out injector N:3 was returning quite a lot more than the other three (~53ml per 3min test vs. ~35-40ml for the other three) and likely a bit on the blocked/clogged side, difficult to say how much they were returning when the car was new and what is exactly considered normal. The whole testing process if you want to see it is here https://youtu.be/CxJJtPArD9Y

So, to my surprise after the Wynn's cleaner, the vibration at ~1,500rpm has disappeared.
It was not the intercooler and it was not the engine mounts, but one or maybe more than one injector being on the slightly blocked side of things. I guess that eventually this one will get more blocked with time unless I can keep it in check with an injector cleaner, but eventually all will need some refurbishing. I suspect that fixing the intercooler helped to stabilise the engine a bit and the vibrations were much less noticeable. I noticed something similar with hooking a second oil catch can, one of the thick pipes was holding the engine a bit tighter and hence less vibrations. But vibrations return as these things move around and do not hold the engine tight anymore.

Had I been a bit more of a believer in fuel additives and used them on a more regular basis, I might have not noticed. So, if you have something similar, worth spending £5-6 on an injector cleaner, at least I know Wynn's works, but others might work even better.
smile, you are alive! Peugeot Partner Escapade (same as M59, but with offroady-ish look) 2007, 1.6HDi 92
https://www.youtube.com/c/moremolecules
[-] The following 1 user says Thank You to saskak for this post:
  • brajomobil
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