Disco 2 Uphill Junctions - Engine Revs Low

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Shimsteriom

Shimsteriom

Master Procrastinator
Posts
41,905
Location
Over Here
I've started to notice that when I'm stationary on an uphill junction, that the engine revs seem to be lower than when on a flat junction. The engine doesn't die, but it just seems like it not getting enough fuel. Its not a major issue, but can anyone offer any suggestions why this might be happening? It's had a new fuel pump, fuel filter and fuel pressure regulator in the last 12 months.
 
Do you still have EGR?... clean the AAP sensor anyway(the one in the airbox), if the filter head is fitted with a non return valve you should put a new one(in the rear inner port of the housing)
 
The EGR has been removed and the air filter was renewed about 3 months ago. It still has the cat fitted. It makes no difference if the MAF is disconnected, but I haven't checked the MAP yet, I was going to remove it and give it a clean later this morning. I'll plug my Nanocom in and go and find some hills to stop on today to see what the live readings say.
 
Removed and cleaned the MAP sensor, it wasn't too dirty. Been out for a run with the Nanoncom connected for some live data, and nothing is showing out of the ordinary when stationary on a hill when compared to stationary on the flat.
 
Last edited:
When you say nothing out of the ordinary is showing, can you see the dip in revs on the nanocom?

Also you say you cleaned the MAP sensor, SF edited his post to say AAP.

Cheers
 
Shimsteriom said:
Removed and cleaned the MAP sensor, it wasn't too dirty. Been out for a run with the Nanoncom connected for some live data, and nothing is showing out of the ordinary when stationary on a hill when compared to stationary on the flat.
Click to expand...
It was about the AAP not MAP and an inputs fuelling data saved then posted here would be relevant not instrument mode
 
neilly said:
When you say nothing out of the ordinary is showing, can you see the dip in revs on the nanocom?

Also you say you cleaned the MAP sensor, SF edited his post to say AAP.

Cheers
Click to expand...
Yeah, sorry, the revs did drop by about 50. Not a lot, but you can feel it. I've not checked the AAP, but will do at the next opportunity.
 
sierrafery said:
According to the data it's not a management issue though how is that engine running under load? cos the boost is very low
Click to expand...
To be honest, the quick run I did to get this data wasn't a hard run, so the engine was never really under any load. On a good run, with the engine under load it seems to run rough at high revs in the lower gears, but once I reach 4th and 5th gears it pulls really well up hills.
 
freelance said:
Only needs one **** fill up these days!
Click to expand...
I'll grab a new filter today. Funny you should say this, but many motorists on the Island do complain about dirty diesel from some garages, so maybe I'll try filling up at a different place for a few weeks.
 
You must log in or register to reply here.

Similar threads

tweedandbriar
Flat Spot at low revs...
Replies
4
Views
230
tweedandbriar
tweedandbriar
H
Discovery TD5 engine starts shaking occasionally when started
2
Replies
39
Views
2K
sierrafery
sierrafery
J
engine cuts out at high revs, eml on td5
Replies
2
Views
275
Tim4x4
Tim4x4
spacebrodie
Freelander 2 (LR2) Cut out - P0045-19
Replies
6
Views
488
Arctic2
Arctic2
A
Disco 2 Please Help engine cuts out
Replies
3
Views
1K
sierrafery
sierrafery
Back
Top