hi my 14 has developed a slight fault its lost a tiny bit of power ticks over funny sudenley whent to low so ive turned it up a bit so ive done dealer mode no codes ...what I have learnt is if I disconnect the ap sensor the bike is fixed runs ace apart from obviously a fault code does this mean the ap sensor is gone wrong ??
I would think so after disconnecting the ap sensor it runs fine I would think so . put a test meter on it see if it comes into the volt current rage before buying another one .seems you have got a good starting point .to the problem.
Which AP sensor?
I seem to recall a ambient pressure sensor on the side of the air box & a manifold pressure sensor under the tank.
the ap sensor on right side of air box I cant test it according to manuel u need a vacuum gauge strange thow when its pluged in thers no fault code surpose it could be faulty but sort of still work so no fault code ...when its pluged in the tick over goes down a bit and just ant right and it just does not run quit the same as normal if I compensate for the drop in tick over it starts to try to hesitate abit at 1500 revs then slowly drops...if discounted all is well apart from it thows the f1 light
Disconnecting the AP sensor may be a red herring - whilst they can fail I've never heard of one going wrong in all honesty.
When you sat "lose a bit of power" - does this mean when you are riding it or when it's ticking over?
Given it's a low mileage machine I suspect it might be a dirty injector causing the issue - they may need cleaning (look in recommended suppliers and I'm sure there is a place there that others have used successfully)
Thanks gsx barmy il look in to injectors the throatle body were recentley balanced and i did wounder ABOUT THE SENSOR its power loss is when riding engine has lost a very very tiny bit of power and tick over not normal
Only thimg am thinking is if injectors are dirty why does it get fixed with ap sensor disconected ? The injectors are still dirty weather sensor conected or disconected
Been ebay they have a new old stock ap on ther for 40 pound so il gamble on that first then injectors
Quote from: Mark Knights on Thursday, 06 July 2017, 03:55 PM
Thanks gsx barmy il look in to injectors the throatle body were recentley balanced and i did wounder ABOUT THE SENSOR
Since they were recently balanced..... it is possible that the small rubber tubes on the bodies are cracked / misplaced when doing that.
They pull off the original suzuki black hoses from the injector bodies to put on the hoses towards the balancer gauges. They also disconnect the sensor connected these hoses.
Picture added for clarification.
thanks I will cheak but I cant see it being that as disconnecting the sensor would not fix that ..but I will cheak it today
The pressure sensor connected to the injectors needs the values of the pressure sensor next to the airbox as a base line for the injection system. They work together. If one of the two is off / not connected / daft the gsx1400 will run but in a fail safe mode.
Next to the airbox - RH panel- is the atmospheric pressure sensor
Intake air pressure ( IAP ) sensor is below the fuel tank.
Below some screen captures from the manual.
The IAP is in the basic section
The AP is in the various section for compensation
relize it goes in to fail safe but it runs perfect am considering just leavin the f1 light on n no sensor ...ive orderd a sensoe so il see if that sorts it
well the new ap sensor has not changed any thing so am stuck ...my tick over varies from about 800rpm to about 1200rpm and trys to hesitate at 1500 when I close throatle its a k7 model ....the abouve pic has any one got a pic of where the 2 pipes go just woundering if the mechanic has put them in reverse to c if that makes a difference
Have you tried switching the new sensor on the intake air pressure?
The one under the tank.
No pic but the pipe in the centre goes to the MAP sensor under the tank, but the bike won't idle with that disconnected (I know as I've tried this after balancing the throttles & forgetting to reconnect it).
The pipe to the left goes to the pairs valve further forward under the tank.
no the one under the tank has a different part number and part name ...so they look the same but there not ,,,,looks like giving the local muppits at the shop a ring and book it in ..no good shops where I live
my pipe on the left is actuerley on the right and has no conection fitting on the left side guess ther difrent depending on the k7 thing ..I have a pipe in middle and a pipe on the right side,,,no air leaks ive sprayed a lighter gas can all over
No they are all the same, I just hadn't noticed that pic is taken from the engine side.
So as fitted to the bike, the centre one goes to the MAP sensor under the middle of the tank & the other goes to the pairs valve.
Its fixed tuurned out to be sensor under the tank the sensors are the same as the air filter one ..robinson foundery were confusing they have it down on parts list as 2 seprate parts and part numbers I rang them and its a mistake on ther parts page and told me yes bothe sensors r the same . So its finaly fixed new sensor
Well done for tracking that down Mark, as that's quite an obscure fault with that sensor going - and well done on sorting out Robinson's as well! :onya: