The pumps are stripped down and all possible components replaced or repaired. A cant offer any real advice without a scan with alfa diagnostic software. I loved my new car but then after a few weeks it ended up with an awesome car that had no gears after numerous phone calls, hours and weeks of frustration, i ended up with a quote of r48 398. The selespeed is a robotized manual gearbox with electronic clutch. What does go wrong with selespeed page 1 alfa romeo, fiat.
But its saying there is a mismatch between the clutch speed sensor and the signal from the abs, this is normally a sign of gearbox bearing failure, the thing to do is remove the clutch speed sensor from the front of the gearbox and check it for physical damage, if the end it. Selespeed is the name of an automated manual transmission used in alfa romeo cars, developed by italian company magneti marelli and made by graziano. Page 16 sensor solutions sensor technologies for the automotive industry catalog 80863 revised 032016 sensor technologies for the automotive industry transmission sensors speed sensor platform industry automotive application transmission, engine, clutch, chassis, brake functions measuring gear speed, travel and angle position. A wide variety of gearbox sensor options are available to you, such as speedometer sensor, oxygen sensor, and knock sensor. What does go wrong with selespeed page 1 alfa romeo. Only problem is after only doing 100 or so miles it went into safe mode on the selespeed gearbox so i only get 12 and reverse. For all of those who wanted to download th software from the website sorry it had. Linear actuator for robotic automatic transmission selespeed application. The fault that was found is p2905 gearbox subsystem incorrect engagementselection.
This page is dedicated to all alfa selespeed lovers that need help and advice on. I did the simple test and the result was that i have no pressure on the gearbox. But oil can pass through it as there are gaps which are actually there to allow the box to breathe, the problem though is more than likely an oring seal on one of the pistons or between the back plate and body, depending how much fluid youve now put in the gearbox. Aug 17, 2016 the sensors that send the position of the gear selection, gear engagement and clutch control actuators to the selespeed control unit are single ramp potentiometers installed directly on the electrohydraulic group. Then, when slowing down it goes into neutral between 3rd and 2nd gear. Unless you have so e sort of obd diagnostic software an the right lead i would say you are fumbling in the dark but i would start with the basics. In this study, a new application of the iop algorithm is presented for locating freeposition indirect sensors, such as vibration and acoustic emission, for gearbox system to preform high quality of information regarding the characteristic of the gearbox tool.
Oct 17, 2018 i am fairly confident that if you simply go to the dealership with a faulty selespeed gearbox and the problem is not something obvious or easy to replace like an accumulator or a hydraulic pump, they will try to replace the entire unit for. Occasionally the gearbox is going crazy when changing gear in auto mode, much less if any in manual mode. Brand new selespeed pumps in stock selespeed gearbox in stock alternators, startermotors and ac pump available twinspark and jts radiator and ac condensor alfa software available for diagnostic and coding where required. Selespeed randomly refusing to start or select gears. My alfa dealer cannot find out why this is happening. Origfiatlanciaselespeeddruckventildruckventilsensor. Its easy enough to adjust but you do need to use a laptop, cable and cheapfree software to do the job. Mysterious selespeed problems solved well im happy after a long day working on two stilos. P0720 output speed sensor circuit malfunction check the wiring plug for the sensor, should be somewhere round about the gearbox. Im also with baz in that the whole actuator does not need to be changed.
It is important that this is set correctly, but the limit is 28 28. The cost of repair is going to be high fiat no longer can supply a complete pump actuator unit and my local dealer in ireland are also struggling with diagnosis and also have never serviced. My recommendation is to avoid selespeed transmissions when buying a used car. So do you think one or both of these sensors are defective. Hydraulic circuit oil pressure sensor it is installed directly on the hydraulic group. The selespeed robot is a complex hydraulic device, made up of solenoid valves, sensors and actuators. The solenoid is 12vdcpowered and activated by the control unit, allowing the operation of the. Working of the hydraulics actuator system june 30, 2017. The engine uses a 20w50 in south african conditions but a 10w40 is recommended. Sounds like this is the source of my selespeed problems. How to check transmission speed sensors it still runs.
The alfa diagnostics are actually very comprehensive and multiecuscan is great software. These are integrated to the manual transmission with no special. Optimising sensor location for an enhanced gearbox condition. Some were available as an upgrade under warranty, some werent. Alfa 156 sport wagon silver parts and panels all in good condition. The pressure sensor is responsible to detect the hydraulic pressure in the accumulator of the dualogic selespeed system. It is triggered by the turning of the transmission shaft, sending a signal which increases. Components for automatic transmissions bosch mobility solutions. I feel like its a sensor or something because it has been running fine. An engine ecu etc from a manual will not run the engine in conjunction with the gearbox in a selespeed car. Firstly this strange electrical noice start from the engine and few days later. From the software function point of view, both amts and ats, can perform. How to install elm327 usb cable on windows and obd2 software may 22, 2018 measuring sensors june 30, 2017 working of the hydraulics actuator system june 30, 2017.
In 2nd gear accelerate to 3000 rpm, then brake and stop the car. System hazard analysis of the selespeed gearbox sciencedirect. Page 111 selespeed gearshifting takes place through a floating the gearbox can work according to two op control lever afig. Clutch disk speed sensor gearbox primary this is installed on the gearbox inlet, directly on the gear box. The non selecting 4th gear on selespeed it seems to affect the early generation gearboxes is a common problem on uk alfa forums that i have come across in my research on alfa 156s the problem seems to be caused by a build up of oil swirl old thickened up gearbox oil inside the actual gearbox itself. After reading numurous threads on this site i went out and bought a cable and the alfadiag software. Turns out the problem was that the input shaft bearing on the gearbox had collapsed source of aforementioned bucketofscrewsin gearbox sound, and that this had allowed enough movement of the input shaft to start to chew into the selespeed speed sensor. The electronic controller provides control signals to the valves in response to aircraft signals, gearbox speed sensors and a combustion temperature sensor.
Heard back from john whalley and they had hooked it up to examiner and found that the gear engagement sensor was faulting intermittently. The main problems with selespeed are electronic sensors. The sensors that send the position of the gear selection, gear engagement and clutch control actuators to the selespeed control unit are. I read tensioner bolt, oil pump, pressure tank ball, engine gearbox rpm sensors. Hi, i am now the proud owner of a lovely 156 selespeed. With an automatic transmission, the driver no longer has to operate the clutch, which is very comfortable, especially in urban stopandgo traffic. Selespeed system failure on, car drives, gear number flashing. This gearbox consists of a conventional mechanical transmission with gearshift lever afig.
When changing up gears it wont accelerate until i take my foot off the accelerator and then accelerate again. Automotive lineal actuator for selespeed gearbox description. A selespeed ecu is no coded to the car, but they are specific to model 147gt or 156, and they are specific to pre or post facelift. Check if you can get a reading from all of these sensor using diag software some time just one broken sensor and the car will not even start or the gearbox wont work correctly. Allows you to perform calibrations, check sensors and solenoids. I loved my new car but then after a few weeks it ended up with an awesome car that had no gears.
Apr 26, 2017 imho every selespeed owner should have one. Specific sensors of the automated gearbox position sensor for. Fiat and alfa romeo obd2 diagnostic scanner tool erase fault. The top of a horizontal gearbox may only be a flimsy not on falk equipment cover and have many drumhead frequencies that are not directly related to the gear set. Fiat lancia selespeed druck ventil druckventil sensor. Will go back up there and check connections by cleaning etc, think i might of got oil in the gearbox input sensor as i have just replaced the actuator, or could be signs of the clutch to be goosed. Aug 10, 2015 that part number is one of the position sensors, and itself can not be the leak as it is electrical with no hydraulic connection. I run alfaobd software for faults reading and got a diagnostic report for the automatic gearbox marelli selespeed cfc300 module. How to check transmission speed sensors by jeremy holt. Absence of maintenance like this can cause gears to be crunched etc. How to install elm327 usb cable on windows and obd2 software may 22, 2018.
It is powered by a little hydraulic pump, and it has its own hydraulic fluid circuit. The symptoms of the problem are jumping to neutral in 3rd, then when i put it back into gear, it goes straight to 5th, with selespeed warning light flashing and accompanied warning beeps every 20 seconds or so. The oil is pressurized by the pump and then stored in a hydraulic accumulator. F430 error codes selespeed gearbox p1741 engagement. Its also worth noting that the selespeed should be adjusted on an annual basis. The solenoid is 12vdcpowered and activated by the control unit, allowing. I have been stuck so many times on any road or busy highways with impatient motorists racing or hooting, that i became fearful and stressed out to get into my car and drive.
Selespeed is the name of an electrohydraulic manual transmission used in alfa romeo cars, developed by italian company magneti marelli. Pump is then reassembled and tested in real environment on actual vehicles before being shipped. Using this lever it is the first is semiautomatic hereinafter on request for versionsmarkets possible to request increasedecrease of. Selespeed gearbox p1720 oil pressure sensor oil pressure out of range or no signal selespeed gearbox p1745 switch up defect found on the up switch. Selespeed advice needed selespeedautomatic gearbox help.
I decided to write this guide to help with dualogic gearbox problems after. Selespeed is the name of an automated manual transmission used in alfa romeo cars, developed by italian company magneti marelli and made by graziano trasmissioni the selespeed is an automated manual gearbox with an electronic clutch. I had a battle for years spending thousands of rands on a continual selespeed gearbox problem. Fiat stilo stilo selespeed problems i have a stilo abarth 2. Firstly, the buttons sometimes take 4 or 5 pushes before they work. After numerous phone calls, hours and weeks of frustration, i ended up with a quote of r48 398. The sensor monitors several different engine and transmission functions and sends the information to the onboard computer. Hi, the clutch self calibration works fine after running the function, a driving test must be done. If the engine is running, then you can only select 1,2,r or n, its to prevent you pulling off in too high a gear. Buy fiat and alfa romeo obd2 diagnostic scanner tool erase fault codes icarsoft i950. Selespeed clutch self calibration page 2 multiecuscan. In its current incarnation it can be operated via paddle shifters from the steering wheel or via a joystick like a sequential manual gearbox. Wont go higher than 3rd gear and wont change up or down automatically in drive mode. For space limitations, attention is here restricted to a small number of top events and operating modes.
Using the selespeed gearbox using the selespeed gearbox the car is fitted with a mechanical gearbox with electronic control, called selespeed that works in two operating modes. I have had my 156 for 9 months and have had nothing but problems with the selespeed. Fyi the sensor i replaced is marked in the previous picture with an orange cross. Modern automatic transmissions use a lot of electronics, such as speed and pressure sensors, electrically operated valves. Automotive transmissions the gearbox output speed sensor 8 determines the current speed of the vehicle and makes it available to the tcu. Fiat 500, fiat grande punto, fiat idea, fiat musa, fiat panda, fiat punto, fiat stilo, fiat ypsilon. Page 143 the gearbox can work in two operating with the gearbox in the city mode it is failures of selespeed gearbox are signalled modes. Selespeed gearbox p1710 clutch position sensor defect found on the clutch position sensor. My name is shaun and i am a business owner who purchased my first alfa selespeed in 2007. The electromechanical actuator consists of a solenoid, a mobile part and a customized and integrated connection. Is it likely that the sensor i used to replace the faulty one is also faulty. It could also be as a result of a faulty clutch solenoid evo or a faulty clutch potentiometer. Selespeed i was robbed selespeedautomatic gearbox help.
Position values inconsistent or no signal with the vehicle working conditions. He says that automatic transmission fluid like tutela cs selespeed oil. Fiat stilo abarth gearbox problem the slespeed gearbox is a complex thing, you might be better off going to the stealer for a quick fix, you can also use alfa romeo dealers who work on more of the selespeed type boxes as they are. Red selespeed warning light flashes on the dashboard and i am limited to 1st, 2nd and reverse. Clutch adjustment position selespeedautomatic gearbox.
I have taken it back for this problem on 14 occasions. I would be keen to get one if anyone knows where i can order one, my dualogic has a hydraulic leak and it looks like i need to at minimum remove the actuator from the transmission to fix it. It wasnt the same brand but the part number was the same and they looked identical. The sensors that send the position of the gear selection, gear engagement and clutch control actuators to the selespeed control unit are single ramp potentiometers installed directly on the electrohydraulic group. It is an electromagnetic sensor and sends a sinusoidal signal to the control unit cfc 208f that has a frequency in proportion to the speed of a pinion mounted on the gearbox primary shaft. Selespeed actuator gear selection sensor replacement. There have been a number of selespeed software releases since its launch in 1999. I was just looking through an old thread on here and there was reference to what i think was a dualogic repair manual part number 60346822. Firstly, its amazing value for money, especially on a slightly older model, i. The selespeed pump uses an atf dexron iii a dexron ii can be used as an alternative if a dexron iii is unavailable. I hae read the code that is showing and it is p1742. That part number is one of the position sensors, and itself can not be the leak as it is electrical with no hydraulic connection. But its saying there is a mismatch between the clutch speed sensor and the signal from the abs, this is normally a sign of gearbox bearing failure, the thing to do is remove the clutch speed sensor from the front of the gearbox and check it for physical. How to test your sensors potentiometer alfa selespeed.