Loosing power on slight inclines

[mikeonb4c]

Normal for Bongo gearbox not to go into top gear until warm. Common for handbrake etc to get hot esp if scavenger fan not operating when it should so check sensor near handbrake and/or people have opted to fit an over-ride switch.

[Superman can't fly]

Main problem now seems to be hitting gears up to 3rd lovely. Come to go to fourth and just seems to not want to change up. Revs start to drop and just slows me down to around d 30mph. No hold light flashing and once in lower gears goes absolutely lovely. Help.

[Superman can't fly]

Okay so after seeking professional help the lovely bongo has been diagnosed with the oil sump gasket needing changing with a good clean and fresh oil. Will keep updated as it started to loose power through all gears if not I was told it would worst scenario would be conversation box. Does anybody think this is right or any other idea's

[teenmal]

Okay so after seeking professional help the lovely bongo has been diagnosed with the oil sump gasket needing changing with a good clean and fresh oil. Will keep updated as it started to loose power through all gears if not I was told it would worst scenario would be conversation box. Does anybody think this is right or any other idea's

I cant see how changing a sump gasket would cure the problem, unless he means remove sump to clean filters etc. Was this a specialist Auto Box centre ?. As a mater of interest have you changed/cleaned all the Fuel Filters?

[Superman can't fly]

Yes he wants me to take of sump clean it completely and replace gasket as it seems to have a little leak on it. All other things like fuel filter has been changed and the fuel filter was filled with sludge. I've even cleaned the banjo filter.

[teenmal]

Yes he wants me to take of sump clean it completely and replace gasket as it seems to have a little leak on it. All other things like fuel filter has been changed and the fuel filter was filled with sludge. I've even cleaned the banjo filter.

I may be wrong but I cant see how a slight leak at the sump gasket can cause this fault, is the advisor an auto box Specialist?

Was the banjo filter very dirty?

[WestyK]

I agree this wouldn't have anything to do with the issue weather its the gearbox or engine sump.
Did he give you a reason for doing this.
Were oil levels low?
Only thing I can think is he is suggesting an oil change and filter clean which is always good advice as a first thing to try with gearbox issues as its the cheapest.

Not sure if its just me and I am not the biggest expert on Bongos by a long stretch but do know my way around engines having built and modified quite a few over over the years. All petrol though
But. are we sure this is a gearbox problem. It sounds more like the engine isn't providing enough power to me.

If it was the gearbox and and the problem was that it was not changing up to 4th the engine would just rev out to max in 3rd and go no further but the fact the revs starts dropping seems really odd and more like and engine issue.

If you floor the throttle from stand still dose it go to max revs (around 4k) in 1st, 2nd and 3rd and dose it accelerate quickly relative to a Bongo of course, They are actually quite nippy up to about 40mph.

My gut feeling is you engine is down on power or something.

Very happy to be proven wrong as I am learning Bongos every day

[Superman can't fly]

The guy actually has some knowledge of bongos and the auto box. It's accelerating through all first few gears. It's started that when I start hitting higher in the revs when it should be changing up it starts to drop revs and they bounce on the rev counter between 2000 and 2500 holding and slowing the car down it slows the car completely down and until it's under 30mph. Gearbox oil was low but refilled accurate and have ordered sump gasket and will clean out. It revs in park right the way up the counter no problem at all. The banjo filter was completely clean. I'm so stuck on this I don't know what to do

[g8dhe]

Isn't it about 2500rpm that the turbo cuts in to provide the power rather than the speed ? Your sure there are no leaks around the turbo ducting etc.

[WebWiz]

Isn't it about 2500rpm that the turbo cuts in to provide the power rather than the speed ? Your sure there are no leaks around the turbo ducting etc.

Already said that last week

[g8dhe]

I know but it seemed to be missed, so thought I'd repeat it

[Superman can't fly]

Thanks for the reminder and being honest I've paid so much attention to thinking it was because it was problem going into 4th gear I lost track and kind of thought it was a gearbox issue. Going to try again to check this out if not I think I will have to break her for parts. And also very regrettably as don't have the spare cash to try much more

[WebWiz]

I know the feeling. Mines costing a fortune to get working.

Bought it in Feb for £2k and spent about £600 on it already.

Starting to think I've bought a lemon but determined to fix it as hate to see it scrapped after all my hard work.

Where about are you? Is there a bongonaut near you who can help?

[Superman can't fly]

Well thanks for advise bongo lovers. It so defo not a gearbox issue. Took turbo shield off took pipe off checked turbo which had load off rubbish in etc. The fan spins lovely and no movement I turned car on gave it some nice revs after few mins waste gate working group well etc. Next minute same thing happened as before. Yes it lost power dropped between 2000 and 2500 as if being extinguished. . I rung Steve up in Cumbria and told him what was happening. Thanks to him he said try a blank on the EGR. I am awaiting for one off eBay now so be a few days until get it but hoping he's right and this may solve it. Basically he said if the exhaust gases we're flowing back in etc it would cause an issue like I'm having. So fingers crossed

[WebWiz]

If you blank the EGR you will get £1000 fine when you next MOT the bongo.

It's now a criminal offence to tamper with emissions regulating devices in vehicles.

Also, EGR is closed when you put your foot down to ensure you get power during acceleration. It's only open when plodding along to save the environment from all the nox.

Are all the vac hoses on the EGR/ cold start system OK? Maybe he's onto something but blanking it won't do these days. You'll need to fix the EGR fault if there is one, rather than bodge it.