How did I fry my ecu

Discuss topics related to the CA18DE and CA18DET series engines.
fabio240
Posts: 501
Joined: Thu Apr 03, 2008 10:55 am
Car: S13 with ca18det

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Thursday I installed an afc neo and it worked fine with the stock Maf which was bad .Then I installed the z32 Maf and as soon as I did that and turned the key it fried my ecu.The wierd part is that inside the ecu where it fried was pin 55 Ambient Air Temp Sensor and also theres a mystery wire for pin 17 Injector Pulse Duty Output (Trip Computer For Fuel Usage Meas.) which is just hanging now and I dont have a clue where it goes and I have my friend an sr20 guy hanging over my shoulder laughing at my pos thanks for ur reply.


boost_boy
Posts: 7051
Joined: Thu Nov 14, 2002 7:28 am
Car: B12 sentra w/built CA18DET, B12 sentra w/fully-built CA18DET, S13 coupe w/ CA18DET, S13 hatch w/CA18DET, 2002 maxima SE
Location: Miami, FL.
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fabio240 wrote:Thursday I installed an afc neo and it worked fine with the stock Maf which was bad .Then I installed the z32 Maf and as soon as I did that and turned the key it fried my ecu.The wierd part is that inside the ecu where it fried was pin 55 Ambient Air Temp Sensor and also theres a mystery wire for pin 17 Injector Pulse Duty Output (Trip Computer For Fuel Usage Meas.) which is just hanging now and I dont have a clue where it goes and I have my friend an sr20 guy hanging over my shoulder laughing at my pos thanks for ur reply.
Wrong connections will cause this nearly everytime.

Dee

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MeanGreenS13
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Joined: Sat Aug 20, 2005 12:59 pm
Car: 2011 Chevrolet Silverado 2500HD
Location: Ocala, FL
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ive got a good working ECU for sale, Email me [email protected]

i can only take moneyorders as i forgot my password for paypal and cant get it back for somereason haha

fabio240
Posts: 501
Joined: Thu Apr 03, 2008 10:55 am
Car: S13 with ca18det

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But I dont understand what I did wrong because I followed the write ups word for word.Is there any kind of way I can trace down the bad connections?

fabio240
Posts: 501
Joined: Thu Apr 03, 2008 10:55 am
Car: S13 with ca18det

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Also I dont know where that mystery wire goes and do I need it?

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MeanGreenS13
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Joined: Sat Aug 20, 2005 12:59 pm
Car: 2011 Chevrolet Silverado 2500HD
Location: Ocala, FL
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no clue man, i suggest having someone better at electrical stuff look at it.

if you want the ECU let me know

phil

bradt
Posts: 228
Joined: Wed Apr 12, 2006 5:56 am
Car: 1989 240SX CA18DET
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I fried the same input on my ECU 3 years ago. Never quite understood what happened because it ran fine one day, went to go to work the next morning and it fried. Replaced it with a MINE's tuned ECU and has run great ever since.

fabio240
Posts: 501
Joined: Thu Apr 03, 2008 10:55 am
Car: S13 with ca18det

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I just hope I dont fry another ecu

fabio240
Posts: 501
Joined: Thu Apr 03, 2008 10:55 am
Car: S13 with ca18det

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can someone tell me if I need the grey and red wire on pin 17 or what the ambient air temp sensor does Ive tried google and all other foums where is the CA love if I wanted to be treated like this I would have gone SR.


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