Questions tagged [electronic-control-module]
The electronic-control-module tag has no usage guidance.
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What are the factors that rev hang depend on? Does rev hand depend on the engine load?
I know that rev hangs are intentionally introduced to modern vehicles that operate on electronic throttle bodies, by programming the ecu to close the throttle valve slowly (in gasoline engines) even ...
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Does car ECU subtract atmospheric pressure from MAP reading
In calculation of MAF (g/sec), Does the ECU subtract local atmospheric pressure (baro sensor reading) from Manifold Absolute Pressure (MAP sensor reading) to determine the actual air mass entering the ...
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How to open Ford PCM
I have a 2008 Sport Trac with a dying PCM whose symptoms overwhelmingly suggest that it has one or more bad electrolytic capacitors. It's likely to be an easy repair... assuming I can figure out how ...
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Turboing a 4B11
I own a 2015 base model lancer with the 4b11 and I want to turbo it so I’m going to get another 4b11 and put all my mods on it and when it’s done pull my stock engine and put the built one in my ...
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ECU after engine swap
I have a 2005 wrx, previous owner engine swapped it to the STI short block (EJ257) so now it’s a 2.5 instead of a 2.0, i’m trying to buy an accessport for it, but i don’t know which one to get because ...
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What kinds of tuning can ruin a car's ability to pass emissions testing?
Suppose I want to tune a car for performance, like doing an ECU re-map for a Toyota Supra.
Could this affect the car's ability to pass emissions testing? If so, how?
And in general, what kinds of ...
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One key stopped working on 2007 Honda Odyssey
We bought two new keys for our Honda Odyssey over a year ago, they were cut and programmed at the dealership. Yesterday, one of the keys stopped working, it'll still open the van, turn in the ignition ...
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VW Jetta 2000 ECU swap
I've read the forums and my question isn't answered. I have swapped my 2.0 to 1.6 in my 2000 Jetta still using my 2.0 ecu for the 1.6l engine. Is it safe? How will the fuel economy be and any effects?
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How to find out if your ECU has been reflashed?
Vehicle
2010 Audi A4 Quattro, 2.0L TFSI engine, automatic transmission, 180,000 km.
Recent History
Friend bought this car used 2 months ago from a private party. The check engine light comes on with a ...
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Used motor and trans in my 09 escape limited 2.5l. Does it need to be reflashed?
It will start if starter relay is jumped and stay running but will not Shift into gear.
Replaced the starter switch with new one and new starter relay. No power to the starter switch as I tried to ...
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Help Identifying Wiring Harness
I need to find out what this goes, the year and I think it’s to a corvette eco and wiring harness but don’t know for sure Help
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ECU tuning exhaust - why?
When a sports exhaust is fitted to a car apparently a re-tune of the ECU is required. For a simple example consider a regular unmodified normally aspirated petrol car which then has a sports exhaust ...
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I have a 2000 ford contour 2.0 runs fine but will not get any faster then 40 mph no matter how much throttle I give,
Motor runs fine transmission shits fine has full rpm range all gears but at 40 it will not run any faster no matter how much throttle you give
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Rough idle and stop when I first start the engine in the morning
I have 2005' Legacy 2.0 4AT.
Problem 1
As I mentioned in the subject. When I first start to the engine it's quickly working but somehow if I try to change gear to D it stops (sometimes it's not but ...
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Understanding ECU hex changes for language change
Is there a way to understand the ECU files hex changes applied by the software? I'm new to ECU files and struggling to understand possible areas of interest in the file.
For example, when the language ...
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2008 Saturn Vue wont start after putting in new ECM [closed]
I put in a new ECM and tried to relearn the key but my security light does not come on and stay on. I did a reading and it gave code p0315. Can someone please help me to figure it out?
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Daihatsu Materia 2005 model 1.5 engine smother while driving
we have a Daihatsu materia 2005 , we replaced the plugs,cam sensor , petrol pump, body sensor, air intake temp and catelis converter. The car drive fine when cold, but after a few kilometres it doesn’...
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2012 Ford Explorer XLT v6 Misfiring and Bank 2 Air/Fuel Ratio Imbalance
Have had a P0306 and a P0316 error codes for a while now and have changed the spark plugs, coils, intake manifold gasket, checked injectors and changed the injector for the cylinder misfiring(6). All ...
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Elm327 an app control
Is there a Android App that's used with the elm327 tool to slightly advance timing on cars?
I know many can read it but I'm looking for the ones that slightly can raise or lower it.
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Why Long Term Fuel Trims Remains in Negative?
Dear Experts here im attaching log of 1SZ-FE, 1.0L engine for your kind consideration, please advice why my LTFT remains in -ive though MAF, Intake Air Temp sensor, ECT sensor and O2 sensor is working ...
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Vehicle is stationary but live data from ECU says Vehicle Speed is 255 km/h, throwing codes P0717 & P0793 and no reversing
I'm repairing Toyota Harrier ACU# (Automatic transmission) with no reversing problem. When gear is shifted to R she throws codes P0717 (input speed sensor A no signal) and P0793 (Intermediate shaft ...
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Why wont my truck start? [closed]
My 2002 dodge durango 5.9 won't start after dodge flashed a replacement pcm. Dodge says its going into theft mode? Any guidance would be apreciated..
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Low LTFT, high STFT
Disclaimer: I am a novice, so I possibly have made many errors during the process.
I have a Mercedes-Benz A Class w168 (2001).
It has a problem that sometimes, when running low RPMs it shuts down (...
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Will disconnecting battery lead to remaps being reset?
Civic Coupe VTI 1999.
If car has been remapped, will disconnecting battery for a long time cause any remaps to be reset?
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A ECM QUESTION... FOR A 2016 KIA SORENTO
How do i reprogram a used ECM if needs replaced?My boyfriend was hooking up stereo system and seems he fried my ECM??Inside lights and locks headlights all still work but will not start...
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Will ECU with slightly different part number work for my 2001 Toyota Camry?
I would like to replace ECU of my 2001 Toyota Camry (1MZ engine) because it has very high fuel consumption. The part number of current ECU is 89661-33880. I couldn't find an ECU with the exact same ...
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Ford Figo not starting immobilizer
I have a ford figo 2012 petrol automatic that is not starting. When I turn the ignition to “ON”, all the lights on the dashboard come on and the immobilizer light blinks. The car used to start before. ...
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E34 BMW V8: unusual CAMshaft sensor signal voltage from ECU
My BMW is an E34 with an M60 engine (OBDI) and one morning started idling and running poorly enough to not be drivable. Unplugging the camshaft sensor with the engine running made no change to the way ...
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Volkswagen GTI OBDII Readiness
I have a 2015 Volkswagen GTI SE (2.0T) which is (a little over) due for an emissions test.
A few weeks ago I had some rear-end bumper damage repaired, and while in the shop they cleared the trouble ...
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Shall I disconnect an EFB start/stop car battery before charging it?
I have a 64Ah EFB car battery in a 2018 Volkswagen car with start/stop technology.
I have an Optimate 5 charger which supports EFB and AGM start/stop batteries:https://optimate1.com/om5ss/
I would ...
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New ECM, car will not crank, VIN is programmed correctly
I have a 2013 2.5L Chevy Malibu LS, which had a bad ECM (Water got in and destroyed part of the board causing random sensor errors and randomly killing the car when driving, randomly deciding not to ...
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Random Battery Voltage Drops
I have a 2008 Pegout 207 that does not start anymore, since the car has parked for a while, I assumed it was the battery (the battery icon was flashing).
Even with a new battery the car does not start,...
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'09 Prius II - No Start. Hybrid light and CEL on
I got a new (used) prius a couple weeks ago. Apparently sold by a weasle. It's never started reliably, and the red triangle light comes on / off. Jumping it would start it though. I replaced the low ...
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OBD2 Scanner can not detect ECU 2002 Mitsubishi Lancer
I bought a OBD2 Bluetooth scanner online. However, when I connect it to the OBD2 port in the car, the app while connecting to the OBD2 scanner gives an error message that it cannot connect to the cars ...
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Battery drain - 2001 Chevy Malibu
I'm trying to troubleshoot a parasitic battery drain and need help. With all courtesy lights off, key out, doors shut, I show 1.5A of draw. The battery is dead within 24 hrs.
I have pulled all fuses ...
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2003 GSXR 600 ECU Toast?
So I've been back and forth with why my bike keeps fouling a plug in cylinder 4. Intermittent firing and real poor performance. Motor would shut down while in 4th gear. Sketchy clutch at start, super ...
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I have a seemingly very hard wiring problem to solve
Further to my last question :
I have a Renault Clio 1.2 2010 that keeps coming up with a P0638 (Throttle Actuator Control Range/Performance) error (according the the OBD2 device I have).
One thing I ...
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Delphi MT05 ECU mph to kph
Is there an ignition key sequence for changing MPH to KPH reading for a Delphi MT05 ECU? The bike is a Brixton BX125, had to perform a hard reset of the ECU to clear out a fault code and that switched ...
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06 dodge dakota melted a ignition coil now getting pcm codes an truck wont start but sounds like it wants to [closed]
I melted a ignition coil now I'm getting pcm codes truck wont start but tries it's best
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Can I find out the unique code of my original car ECU?
I recently got my ECU changed although it was not causing any symptoms. I was still able to use my car with my original ECU. After getting my ECU changed, my original ECU does not seem to work anymore....
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How are new cars (with HO2Ss) affected by cold starts?
New cars have H2OSs to warm the O2Ss. Is this, and any other new tech in new cars, enough to remove all the negative effects of a cold start? How does a cold engine behave differently now (2019) ...
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Siemens sim2k-34vr ecu parametrs and service ids
I need to read parametres like RPM of the engine from siemens sim2k-34vr ECU from obd2 port through K-line protocol,I tried standard service id 0x01 to read current data but ECU said 0x01 service id ...
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Is it possible to reset the mileage of relatively new vehicles and is there a way to identify whether milate has been reset?
In my country, people believe that some vehicle sellers reset the mileage of vehicles to a lower number when selling the vehicles.
I want to know whether it is actually possible to do this in modern ...
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2004 Vitz door/trunk control(ler?) problem
I have a 2004 Vitz which uses a key with built in 1 button remote. This remote is supposed to unlock the doors and allow the boot switch to operate. (Car is started with a regular key)
The doors work ...
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Secondhand ECU recoding
I have a Passat 1.6 blue motion 2014 and the car has suddenly becomes immobile when trying to start and responds with many warning lights,on occasions it does start and run but not for long.I have ...
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05 Buick Rainier engine reduction how to fix?
I'm having a problem getting the engine power reduction to go away. Usually I just have to turn off the vehicle and crank it back up and it's fine. Not this time. We have tried a number of things, ...
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Removal and replacement of OEM ECU
I own an Aurora, which of late has had some strange electrical issues, like trunk flying open when I lock the doors using driver side button, antitheft onstar not recognizing my key when in ignition, ...
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ECU tune file formats
I'm new to the ECU (or chip) tune concept, and I try to understand what is going on there.
I understand the concept and the goal, but I'm having difficulties to understand what is actually going on ...
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ECU Problems Corsa comfort 1.4 2001 auto
I have a Corsa 1.4 that starts and stops and starts after a break. Sometimes not at all. Cranks. After replacing crankshaft sensor, relays on the advice of the RAC who brought me home twice and ...
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Is Jeep and Dodge's, both 6.1l SRT8, PCMs interchangeable
One of the motors is having misfires in two cylinders, afaik compression, spark plugs and injectors were checked, and they were fine. PCM is suspected to have gone bad. Codes thrown: p0301, p0304.
We ...
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