Technical Revs limited

[Auldian]

My 2017 Doblo 1.6L multijet (105hp) isn’t reving above 3000rpm when stationary. No warning lights and no smoke. I just noticed this rev limit thing today after I collected it after its MOT and service (oil and filters). It seemed to have a ticking from the engine at idol and I was just wanting to see if it got worse at higher revs. I’d never rev’d it at stationary before so don’t know if this 3000 limit was always present. I’ve had the van for 3 years. In that time it’s ever missed a beat and no warning lights have ever come on. I did always think a speed limiter had been installed by previous owner as I could never get the van to go above 70 mph on the motorway.
So is it normal for engine safety reasons for revs at standstill to be limited to 3000 or should it rev higher? Is my assumption that a speed limit of 70mph has been set in the MCU? Or is there in fact an issue with the engine or the electronics?

 

[bugsymike]

My 2017 Doblo 1.6L multijet (105hp) isn’t reving above 3000rpm when stationary. No warning lights and no smoke. I just noticed this rev limit thing today after I collected it after its MOT and service (oil and filters). It seemed to have a ticking from the engine at idol and I was just wanting to see if it got worse at higher revs. I’d never rev’d it at stationary before so don’t know if this 3000 limit was always present. I’ve had the van for 3 years. In that time it’s ever missed a beat and no warning lights have ever come on. I did always think a speed limiter had been installed by previous owner as I could never get the van to go above 70 mph on the motorway.
So is it normal for engine safety reasons for revs at standstill to be limited to 3000 or should it rev higher? Is my assumption that a speed limit of 70mph has been set in the MCU? Or is there in fact an issue with the engine or the electronics?

Sounds like something caused when engine had the smoke test for MOT, it involves full throttle for a few seconds, some testers get carried away.
However there is probably a disclaimer for damage as the argument is if vehicle in good order it will stand it.
When that smoke test first came out several cars had their cambelts fail with expensive damage as owners had never given their vehicles full throttle, so quite soon the disclaimer came out.
Doesn't help you much, although it may be worth going back and pointing it out as it was running fine before hand, especially with the ticking also.

 

[The Panda Nut]

Sounds like EGR Valve limp home. Top speed c40mph. Fiat did mine for less than the part cost on ebay. Try egr cleaner - CAREFULLY- first. My Bravo 105 did this. Sometimes a forced regen will clear it. MES would probably confirm the fault code.

PS The Doblo does have a speed limiter and its easy to remove with MES.

 

[bugsymike]

Sounds like EGR Valve limp home. Top speed c40mph. Fiat did mine for less than the oart cost on ebay. Try egr cleaner - CAREFULLY- first. My Bravo 105 did this. Sometimes a forced regen will clear it. MES would probably confirm the fault code.

I agree a good code read will be useful as a guide , although, "It seemed to have a ticking from the engine at idol" needs looking at also.