ECU |
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ECU |
partwerks |
Mar 25 2014, 07:56 PM
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#1
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
Not sure how to ask it, but is it possible on a ECU, like a home computer to reload the program, as sometimes solves a problem?
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Qarl |
Mar 25 2014, 08:01 PM
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#2
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
Not sure how to ask it, but is it possible on a ECU, like a home computer to reload the program, as sometimes solves a problem? Nope. There is no" code". It's a very basic computer made with resistors and very basic electronic components. I don't even think there is any integrated circuits in them |
Cap'n Krusty |
Mar 25 2014, 08:12 PM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
...............and they almost never fail, unless they get fulla water.
The Cap'n |
partwerks |
Mar 25 2014, 08:12 PM
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#4
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
Not that there is a problem in it, but if there was, could there be an low idle issue within it?
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76-914 |
Mar 25 2014, 09:04 PM
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#5
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,509 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Low idle after warm, after hi way run, all the time??
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Mike Bellis |
Mar 25 2014, 09:06 PM
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#6
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Not that there is a problem in it, but if there was, could there be an low idle issue within it? It is possible for the capacitors to dry up over time effecting driveability. The 914 ECU is the very basic design carried over from the 1960's. The technology required to program a chip this old is extinct. You can always try a borrowed ECU and see if your issue goes away. |
partwerks |
Mar 25 2014, 09:18 PM
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#7
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
2004 wrx.
Varies. Not sure what is causing it. Replaced: IACV TPS MAP sensor MAF sensor Eliminated purge control valve, and capped it off. About a 1.5 years ago, there had been a wire that was shorting out that went to the map sensor, red wire. Took about 2 months to find out what was causing it. Seems like before that time, I never had any issues with it. This is the only strange thing. unstable idle. Otherwise runs fine. |
Mike Bellis |
Mar 25 2014, 09:23 PM
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#8
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
2004? Most likely not the ECU. Keep looking. Might be just a vacuum leak.
But, now the answer to the first problem is yes. You can re-flash the ECU. Your local dealer may be able to do it. |
partwerks |
Mar 25 2014, 09:27 PM
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#9
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
I have the Cobb Port, and have it on stage 2, or would it be a good idea to flash it back to stock and back to stage 2 again??
I've sprayed all around with carb spray, and don't find any changes in idle. Don't know, but have been told that sometimes the Coolant sensor can be fickle, and plan on putting in a new one also. |
Mike Bellis |
Mar 25 2014, 09:37 PM
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#10
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
You can test most sensors before changing them. Info is available on the web. Modern ECU can act like one symptom and be a totally different problem.
I had an issue on my turbo motor that felt like a lack of fuel. Turned out to be a bad coil so the ECU cut the fuel... (IMG:style_emoticons/default/dry.gif) A new set of coils was all it took (IMG:style_emoticons/default/beer.gif) More better ones... I had a limp mode problem. tracked it down to an intermittent connection on the temp sensor. Keep looking |
partwerks |
Mar 25 2014, 09:51 PM
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#11
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
I'm going over all the electrical connectors and making sure of good contact.
Last spring I replaced the old ground strap, and made a world of difference. |
Cap'n Krusty |
Mar 25 2014, 09:58 PM
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#12
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Yet another GLARING example of eliciting responses to a question without giving a shred of pertinent information. Not a SHRED! Several of us took time out of our day to lend you assistance in solving your problem on this 914 centered forum, only to find that time TOTALLY wasted. Why don't you pull the codes, analyze the results, and replace the bad components? Stop throwing money at it! A 2004 vehicle is AMAZINGLY self diagnostic, right down to the exact time the code was recorded, and the circumstances surrounding the failure. We call it "freeze frame". If you've modded away that ability, it's your own fault.
Ask me how I really feel ................................... I trust this will be your last turn in the barrel. The Cap'n |
timothy_nd28 |
Mar 25 2014, 10:21 PM
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#13
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Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
(IMG:style_emoticons/default/agree.gif)
I almost asked that very question early on, but decided against it. I assumed it was a 914 ECU and figured that I would be flamed for asking such questions |
Andyrew |
Mar 25 2014, 11:17 PM
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#14
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
Send the ECU to Cobb.. They should diagnose it for free. Expect to pay shipping and be out the ecu for 2 weeks..
APR Tuning had an issue with bad chips and repaired mine for free when I was having an issue. |
partwerks |
Mar 26 2014, 06:04 AM
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#15
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Senior Member Group: Members Posts: 1,593 Joined: 7-September 06 From: Grand Island, NE Member No.: 6,787 |
Send the ECU to Cobb.. They should diagnose it for free. Expect to pay shipping and be out the ecu for 2 weeks.. APR Tuning had an issue with bad chips and repaired mine for free when I was having an issue. Thanks for the tip. I'll get in touch with Ian, at Cobb Port to verify. |
larryM |
Mar 26 2014, 11:15 AM
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#16
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emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California |
X2 (IMG:style_emoticons/default/headbang.gif)
Yet another GLARING example of eliciting responses to a question without giving a shred of pertinent information. Not a SHRED! Several of us took time out of our day to lend you assistance in solving your problem on this 914 centered forum, only to find that time TOTALLY wasted. Why don't you pull the codes, analyze the results, and replace the bad components? Stop throwing money at it! A 2004 vehicle is AMAZINGLY self diagnostic, right down to the exact time the code was recorded, and the circumstances surrounding the failure. We call it "freeze frame". If you've modded away that ability, it's your own fault. Ask me how I really feel ................................... I trust this will be your last turn in the barrel. The Cap'n |
Qarl |
Mar 26 2014, 11:19 AM
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#17
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
X2 (IMG:style_emoticons/default/headbang.gif) Yet another GLARING example of eliciting responses to a question without giving a shred of pertinent information. Not a SHRED! Several of us took time out of our day to lend you assistance in solving your problem on this 914 centered forum, only to find that time TOTALLY wasted. Why don't you pull the codes, analyze the results, and replace the bad components? Stop throwing money at it! A 2004 vehicle is AMAZINGLY self diagnostic, right down to the exact time the code was recorded, and the circumstances surrounding the failure. We call it "freeze frame". If you've modded away that ability, it's your own fault. Ask me how I really feel ................................... I trust this will be your last turn in the barrel. The Cap'n I was confused after a while. Saw question on a Porsche 914 forum about an ECU... started giving answers... and then saw replies about cobb ports and WRX and I was like WTF? |
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