How do I adjust the idle speed?
1 - 14 of 14 Posts
I think it's done by your ECU - the engine's electronic brain if you like. What's your idle at? If you think it's high you might have a (vacuum) leak on the inlet side somewhere so the ECU is having to compensate - check all your hoses are connected/not leaking.
It's UK so 99% will be diesel - very few jdm imports (or US) here. I did say look for leaks inc vacuum, forgetting that unlike petrol there wont be the typical vacuum leak I would be looking for with petrol. I don't know how diesels regulate their air intake? so maybe EGR or something? Still hoses to check first. Some Nissans and Toyotas I recall in the past would automatically raise the idle if accessories were being used, I guess to keep the alternator output up to prevent battery drain - maybe something's been left on to make it want to idle higher.
Yes it is a UK diesel model idling at around 1100rpm which feels a little fast but not a big deal at the moment.
Yeah that is a little high - my owners booklet says it should be 850. Have you checked for any codes?
I guess running the aircon might raise it?
I wouldn't have a clue how to check for codes, as I've been running a 1993 vehicle for the last 16 years. They weren't computerised back then and were easy to work on.
Yes, 850rpm does sound a bit more nearer the mark - about the same as my previous vehicle.
I know what you mean, but, about 10 years ago my son had a rough running vw polo so unable to find fault I bought a cheap code reader off ebay which helped point me in the right direction. It was less than a tenner, and I've used it on every car I've had since. Just for engine codes tho - I just read codes (write them down) google what they might mean, fix what I think, then delete the codes - not failed me yet. On some cars I just accept that it records certain codes (like glow plug relay code on my NV - starts and runs fine with it) My reader's a model u480 but there are tonnes out there.
Disclaimer - some people say they can knacker ECUs so CAUTION. Min'e been OK - I only use it to read and delete the codes, if I haven't fixed it they come back - I don't use it for 'live' monitoring of parameters, which might be where problems start. Every car in the EU since late 1990s I believe has an ODB socket. It's behind the 'card holder' panel under the driver's cup holder on the UK NV. For example, on a petrol car it'll tell you which cylinder is mis-firing so you know which HT lead to wiggle or plug to swap to see if the fault moves with it.
Pin-pointed my wife's cam position sensor failure on her rough running (BMW so not proper ; ) mini. £30 for the part from eurocarparts, 10 mins to change - lovely job, no garage fees.
Looks like I need to get one. Do I need any particular one for the NV200?
No I've had the same one for few years, used on VW, Citroen, Nissan, Volvo and Mini so far. Beware - some people have blown up their ECU with them apparently - just google it.
Update to my 1990s comment earlier, just googled it - 1996 mandatory on USA cars, 2001 Mandatory on EU petrol cars, 2004 mandatory on EU diesels
Joined
·
295 Posts
I haven't heard of blowing up an ecm but why not lol. We use obdII gps trackers for some of our fleet vehicles only had problems with Mitsubishi's. They'd throw random abs codes and would kill throttle or put cars into limp mode for no reason.
I have a decent scan tool so can't speak of cheapo obdII readers other than most are only generic code readers that don't scan airbag,abs transmission or any thing other than obdII codes. They sometimes might help with emission codes or other engine codes but not other systems.
With that said, I should pick one up. It'd be nicer not carrying around a suitcase to scan stuff all the time. .
I have a decent scan tool so can't speak of cheapo obdII readers other than most are only generic code readers that don't scan airbag,abs transmission or any thing other than obdII codes. They sometimes might help with emission codes or other engine codes but not other systems.
With that said, I should pick one up. It'd be nicer not carrying around a suitcase to scan stuff all the time. .
To be fair if there was anything airbag/abs etc (I don't have 'transmission' codes as we use gear levers over here ; )) I would put into garage anyway, but simple diy running problems (plugs, sensors, misfires etc) I'm happy to play with and try to keep money in my pocket
Joined
·
295 Posts
For sure! You guys have way more selection for manuals than out here. You can only buy an nv200 with a 2.0l gas with a cvt here. We don't have much for small cars, the Mirage and Spark are about the smallest I can think of. We have Mini and VW too, rarely see a mini though.
You can't get a loaded Mirage with a 5speed anymore, only base trim. People are getting dumber and most people I work with can't drive standard. It's a good anti theft device lol.
You can't get a loaded Mirage with a 5speed anymore, only base trim. People are getting dumber and most people I work with can't drive standard. It's a good anti theft device lol.
1 - 14 of 14 Posts
Join the discussion
