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Questions tagged [electronic-control-module]

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2 votes
1 answer
1k views

Considerations for a successful VW 2004 Jetta 2.0L engine swap in place of a 1.6L engine

Vehicle make: Volkswagen Model: Bora Year: 2004 Issue: Swapped the 1.6L for a 2.0L. No programming of the ECU was necessary neither was a change of ECU necessary until vehicle started misbehaving - ...
1 vote
0 answers
35 views

Kia rio 2012 engi. 1.4 power supply relay

Dears, I have checked a car kia rio 2012 using active test for engine in diagnostic tool all test are succeed except the power supply relay i tried to locate it but I failed. Could you help me to ...
4 votes
3 answers
224 views

ECM voltage, spark spike

When the car was idling in the garage this morning (hooked up to HP Tuners), I saw a spike on the "Spark" graph at the same time as the car stumbled. "Control Module Voltage" also went from > 14 down ...
4 votes
1 answer
3k views

Help tracking down a battery drain issue on a 2007 Vauxhall Corsa

I'm really hoping someone can help track down a battery drain issue with a 2007 Vauxhall Corsa. We've been back and forth to a Vauxhall garage with this car since we bought it and have had a hell of ...
3 votes
3 answers
6k views

Could a modern car be modded enough to work without ECUs?

With enough time and skill sets, could a modern car be modded enough to work without microprocessors? Having machining skills and a fitted workshop, without buying a new motor block or transmission. ...
4 votes
1 answer
1k views

Honda Hornet engine stalls

I have a Honda Hornet (CB600F) PC41 from 2007. It's the first model with EFI. The bike has an error that we can detect by observing the blinking pattern of the FI light: 2 long and 9 short flashes. ...
3 votes
1 answer
4k views

Is an AC compressor's clutch supposed to cycle off when the RPMs become low enough?

The car is a Vauxhall Agila A and the compressor is a Delphi CVC internally controlled compressor, so it's basically supposed to never cycle while the AC is on. The transmission is obviously manual (...
1 vote
1 answer
567 views

Mahindra Scorpio ECU problem

I am facing problem while displaying metrics on my Android phone, i have this Bluetooth Module and using torque (Lite) app from Play Store. Device is connecting to the phone quickly, but it's taking ...
9 votes
2 answers
15k views

Keep Alive Memory (KAM)

What is "Keep Alive Memory" (KAM) and how is it different from RAM? From what I read over the internet, it is kept alive even after the ignition is OFF, but isn't that what a ROM is supposed to do?
2 votes
1 answer
459 views

ECU repair Opel Corsa Diesel

The ECU in my son's Opel Corsa got wet. A common issue with those model's. An auto electrician repaired it by changing a few damaged components. The mechanic installed it but could not start the car. ...
0 votes
1 answer
461 views

Where can i find official scientific documents with table of PIDs for ECU

I need an official document for reading information from PIDs that manage comunication with ECU of car. I'm searching to sae.org and iso.org but i don't find nothing. Can someone guide me?
4 votes
1 answer
558 views

Won't pass emissions, Bad ECU?

So, Last year my 94 Acura Integra AT passed emissions by the skin of its teeth, this year it won't pass, I have noticed in past year and half that dropped from around 30mpg to about 15mpg. Some times ...
1 vote
0 answers
293 views

non v-tec swap to a v-tec

ive got a 98 civic dx engine is a D16y7 non v-tec I have swapped engines to a v-tec D16Z6. im having problems with the ecu it does not work on a v-tec motor. it does start the car but no v-tec ive ...
3 votes
2 answers
6k views

How to remove pin from Subaru ECU plug

I need to add a cable into an existing plug for a 2007 Subaru Legacy (BP) vehicle. For practice I picked up an identical plug from the wreckers. Figured I could use the pin and cable from the test ...
2 votes
1 answer
971 views

Changing or disabling vtec switchover RPM in 7th generation Honda Accord

I am considering increasing the VTEC switch-over point in my 2007 Honda Accord. The reason I want to do this is to improve the MPG of the car. In this question I am ignoring the open loop versus ...
2 votes
1 answer
136 views

Can an undercharged battery cause the van to have trouble keeping a high enough idle to keep running?

So a few weeks ago I accidentally left my keys in my van ('04 Nissan Quest). Not only in the van, but in the ignition in the 'on' position. I didn't realize this until about 10 hours later, long ...
1 vote
2 answers
148 views

Why doesn't my 2001 Tiburon have power after grounding the positive post momentarily?

I just replaced my manual trans and when I was hooking everything up I went to go attach my battery connections. I had the body ground hooked up and went to go attach the engine ground to the negative ...
4 votes
1 answer
535 views

1997 Infiniti J30 is sometimes very slow to get power after a full stop, otherwise fine

My 1997 Infiniti J30 is sometimes very slow to get any power when I start going from a full stop. I can put the pedal to the floor, and it will slowly creep forward for 3-5 seconds, then suddenly ...
1 vote
2 answers
1k views

Ecu problem on my 1997 toyota corolla

I have now traced the wire that renders my fuel pump powerless. The wire runs from the ECU to the fuel pump relay. It must carry a - charge in order to work the pump. But unfortunately, it is not ...
1 vote
0 answers
294 views

my subaru's getting no injection signal from ecu

I have a problem starting my Subaru engine ej25. I had my sub wire (hot) hit the body of my car and I think I have spiked my ecu (Motec-m400) and nows its doing all sorts of stuff with my coil packs. ...
1 vote
0 answers
1k views

P1633 "KAM Power supply voltage too low"

UK, Jaguar S-type 3litre Petrol 1999. The Check engine light recently came on in my car. It starts and drives absolutely fine, but to be on the safe side I decided to book the car in to a Mechanic ...
3 votes
1 answer
10k views

Hooked jumper cables up wrong. Mechanic says car is unfixable [closed]

I have a 2003 Volkswagon Passat. I left the lights on all day so that the battery was entirely dead. The next day I got a friend to help me jump it. He put the cables on wrong and when we put them on ...
0 votes
2 answers
3k views

Does the computer in modern cars record the maximum RPM attained by the engine?

I have a 2013 Maxima and I'm wondering whether its computer would have recorded the highest RPM it has attained in the past. Is this something all modern cars are able to do? The dealer closest to me ...
1 vote
2 answers
1k views

Honda cbr250r ECU question

Can a used ECU from a Honda CBR250R be reprogrammed with different parameters to increase performance?
1 vote
0 answers
33 views

No injectior signals and error codes

On a Hyundai Accent CRDI 3 cylinders, there is no signal on the injectors wires during cranking but if the car is forced to start with other methods the injectors will start getting the signal and ...
2 votes
0 answers
119 views

Emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars

I am wondering if there have been studies or calculations of the NOx emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars. Honda made some great lean-burn cars ...
1 vote
0 answers
145 views

Faulty EVAP engine code

I had the following engine codes P1133 - HO2S Insufficient Switching Bank 1 Sensor 1 P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 P0130 - O2 Sensor Circuit Bank 1 Sensor 1 The mechanics ...
6 votes
2 answers
2k views

Replace or Repair Mazda MPV 2000 faulty ECU?

I asked a question about troubleshooting ECU related short circuits. No more short circuits in the wiring harness, the only short left appears to be inside the ECU. This leaves me with a faulty ECU. ...
3 votes
1 answer
613 views

Reprogramming a Magneti Marelli Microplex MED604C

I'm interested in reprogramming a Magneti Marelli Microplex MED604C ECU for the ignition of an uno turbo, but I can't seem to find any documentation on this? I'm new to ECU remapping, and my ...
3 votes
1 answer
8k views

What do serial numbers on ECM mean?

I am replacing my ECM with an ECM I bought on Ebay. What do these serial numbers on my ECM mean? P/N 12580204 Serv. No. 12574270 GM03E10A10 ODP48 10032002 Are these serial numbers software / ...
3 votes
1 answer
158 views

Replacing an ECU

i changed the ECU on a Toyota Avensis 2009, it turns on and everything is fine, but the instrument cluster isn't working at all... It was working perfectly before i replace the ecu? Any clue why ...
4 votes
1 answer
214 views

Difference between P0133 and P1133

What is the difference between P0133 and P1133? I believe my car has thrown both of these error codes because I've written them down, but I can't find any difference by Googling them.
2 votes
0 answers
243 views

Cadillac CTS "Traction Control Off" displayed after driving 15 mins

After driving 15 mins the "Traction Control Off" light is displayed on dashboard and radio displays "Service Brake Assist". All go away after engine is turned off for about 20 mins. It recently got ...
1 vote
1 answer
170 views

Which codes does the front oxygen sensor throw?

I have these three O2 related sensor error codes. Are they all codes for the front 02 sensor (the one in-front of the catalytic converter) ? P1133 - HO2S Insufficient Switching Bank 1 Sensor 1 P0133 -...
3 votes
1 answer
141 views

Unresolvable system leak error codes

I have had my mechanic replace multiple components in my EVAP system trying to resolve the following error codes which occur in no particular order within 24 hours after resetting my memory and cold ...
4 votes
2 answers
3k views

DLC Pinout for SVX ECU

Below is the pinout for a 92 Subaru SVX Engine Control Unit (ECU). Since the wiring harness is no longer collocated with original car, I have no idea as to what the pinout for the Data Link ...
1 vote
1 answer
999 views

Ford DuraTorq TDCi EGR system (Euro4) operation, blanking

Specifically the 2008-on (Euro-4 emissions compliant) 2.2 diesel as fitted to Jaguar X-Type (and Mondeo, Transit, etc.) but I suspect the entire DuraTorq family are the same: I've seen EGR blanking ...
3 votes
3 answers
784 views

Can I replace my ignition coil with a ECU?

Can I take the ignition coil out of my 1965 dodge challenger and replace it with a ECU? If I can, how will I go about doing it? Can it be a simple replacements?
3 votes
0 answers
593 views

Mk4 Astra judders, runs hot p0420 p0170 p1130

I have a Mk4 Astra 1.8 petrol 2002 130k Miles. When starting the idle speed revs up & down, it judders when driving the first 500metres. Plenty of oil, water was a bit low. During a 2 hour ...
4 votes
1 answer
6k views

96 Impreza ECU Pinout

I'm still working on getting this EG33 into a 96 Impreza. I have received some wiring harness diagrams, but am unable to match them to the ECU which is in the car. I'm wondering if what I have are the ...
5 votes
1 answer
217 views

Relation of VIN of a car with emission norms of a country it is sold

A VIN of a car determines the country of manufacture. So if a car has a VIN of Canada (CARB emission standard) and is sold in India (BS-IV emission standard), will the car comply with BS-IV standards? ...
4 votes
1 answer
4k views

2006 Mazda 5 2.3L cranks but no start

I have a vexing problem and so far two mechanics and the dealer haven't been able to solve it. The car will crank and crank and crank but will not start. On the initial crank the fuel pump will come ...
1 vote
0 answers
50 views

heat indicator light goes off and ac switches off after some time

I have Hyundai EON. Wwhen I start the car, the heat indicator works fine, but after 20-30 kms, the AC suddenly switches off and the heat indicator light also goes off. What would be the reason? We ...
3 votes
1 answer
708 views

How is Dodge Spark Advance Controlled by the PCM if there is a Distributor?

The Chilton manual for the late 90s and early 2000s Durango and RAM says that PCM controls ignition timing and spark advance. I don't understand this, because these motors are equipped with a ...
6 votes
2 answers
2k views

Is a bad AFM (Air Flow Meter) a likely cause for fuel cut at high RPM and poor performance at low RPM?

Edit: I answered my own problem, the solution was the AFM (see full answer below). This question is for the same engine and the same car as in the following question: Likely cause of poor performance ...
5 votes
2 answers
3k views

Cannot Access ABS-control-unit with ODB2-adapter

I have an ODB2-Bluetooth-Adapter(link) to access the ODB-Protocol with my android-smartphone. It is basically working. The app that I use ("Torque") can connect to the ECU, shows me different values ...
3 votes
0 answers
334 views

SilLabs OBDscan can't connect to Alfa 147: latency too high!

I have an OBD Scan tools built around the Silicon Labs CP210x chipset, but I can't get it to connect to my car at all. When I connect the scan tool to my laptop USB port I have a driver installed and ...
0 votes
1 answer
441 views

ECU help required [closed]

Can someone provide guidance to me about the engine swap from a D15Z4 to a D16Y4 in my 1997 Honda Civic? Can I use the old ECU with new engine? Do I have to buy a new ECU with the new engine?
6 votes
1 answer
167 views

97 Infiniti J30 died out at stoplight, unknown electrical issue

my 1997 Infiniti J30 had the engine die at a stoplight. It turns over when I try to start it, but the engine won't start. The power windows were partly down, and they now won't go up, although the ...
4 votes
1 answer
2k views

Can I replace my ECM in my 2007 Nissan Quest with a used one

My Nissan Quest 2007 has a dead ECM and wonder if I can replace it with a used one. Thanks.