Question about 1989 Ford F 250

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Trying to find the main brainbox for a 1989 f25 0

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It's in the seating area, driver side, under dash, mounted behind the kick panel.

Posted on Nov 07, 2010


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Mitsubishi lancer 2008 emitting black smoke wit high level fuel consumption effort trying fixing prove abortive, they all say is brainbox ,i search for but couldn't find the one that will match it

If you've had it professionally diagnosed and you they say you need a new ECM/PCM computer (it's not called a brainbox) search online for a rebuilder. They'll be a fraction of the price of new and even used. Just a note though, it's rarely the ECM/PCM. Black smoke means it's running too rich, so somewhere the computer is giving it too much fuel. That's usually caused by a bad engine coolant temp sensor or leaking fuel injectors. I think you're trying to replace the most expensive part first. Never a good way to approach car repair.

Jun 28, 2017 | Mitsubishi Cars & Trucks

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Can a weak brainbox cause fuel to be mixed with engine oil

Why do you think there is fuel in the oil? Does it smell like it? Or is the dipstick level climbing? Tell us more about the problem and what you have already tried/done. When was the car last fully serviced? Poor maintenance is no excuse for poor running.

Mar 30, 2015 | Lexus Cars & Trucks

1 Answer

Where is brainbox located in mazda millenia 96

If by brainbox you mean ECU, it should be under the left side of the dashboard, typically behind a panel.

Oct 17, 2014 | Cars & Trucks

1 Answer

My brainbox was stolen and i want a perfect replacement for it

You might need to get a hold of your Lexus dealer, I know some companies set the ECU to the VIN # of the vehicle to try and prevent the selling of stolen parts. If this is the case with your Lexus then you will need to have the used ECU flashed to your VIN # before it will work properly, or you might even need to replace with a new unit.

Aug 23, 2014 | 2001 Lexus RX 300

2 Answers

Hello, i got a nissan sentra GXE 2002 make car. The brainbox got bad, and the electrician got a new one and fix it, it did not start it, so he removed one of the IC and added it to the previous brainbox,...

The EMS (engine management system) is essential for the car to run properly, and for it to be safe to drive.
It sounds like you have the wrong EMS, it was wrongly installed or something like that. To be honest, your best approach would be take the car to a Nissan Approved garage and get them to look it over. Working on these cars is not like the old days - you need a laptop with the right software, not just a socket set. If you carry on driving, you have no idea what other damage you are causing to the engine, and this could end up costing you $$$.
Good luck.

Aug 06, 2014 | Cars & Trucks

1 Answer


Your only option my friend is to replace the ECU and coat the connections to it with dielectric grease to prevent them from corroding.

Dec 16, 2013 | 2003 Honda Accord

1 Answer

Can weak brainbox cause black smoke

Yes, a weak brain box can cause an engine smoke, I just had that experience. Aftrer changing the brain box the smoke stopped.

Mar 24, 2012 | 1999 Toyota Camry

2 Answers


Majority problem on the ECU is the leaky electrolytic capacitors.
If you has the time to do soldering then you can fix the brain box for under $15 vs $120+ for a use one.
Just open the cover and look for damage (over-heated + leaked) capacitors.

Jul 28, 2011 | 1998 Mazda 626

1 Answer

Which fuse is for the car alarm on a 1990 Honda Accord?

1990 Accord didn't come with a factory alarm option. You must have an aftermarket alarm installed and the fuse for that alarm will be on the red wire, very close to the actual alarm brainbox. That brainbox should be located under the dashboard somewhere, normally on the drivers side, but it all depends on where the installer decided to put it. :)

Oct 08, 2010 | Honda Accord Cars & Trucks

1 Answer

F 250 ford

Before you replace the ECU check to see that the fuel pump relay is working. It will be on the drivers side under the hood located just above the fenderwell. It should be mounted on a plastic piece with two other relays beside it. This relay is only about $ 16.00.

Feb 17, 2009 | 1989 Ford F 150

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