ECU Part number location |
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ECU Part number location |
bzettner |
Jun 22 2021, 08:08 PM
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#1
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
Where can I find the part number of my '73 1.7 ECU on the ECU? I haven't found any identifying part numbers and want to make sure it is right for the D-Jet system. I couldn't find info in my searches (IMG:style_emoticons/default/confused24.gif)
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mark04usa |
Jun 22 2021, 08:25 PM
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#2
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'70 1.7 Tangerine Group: Members Posts: 351 Joined: 14-September 09 From: Austin TX Member No.: 10,805 Region Association: Southwest Region |
Originally marked with a Bosch label with part number. Label color and location varies. Often a red or orange label on cover, or a black and white label on the edge.
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bzettner |
Jun 22 2021, 08:35 PM
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#3
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
I see what might have been a label. It appears to be painted over (IMG:style_emoticons/default/dry.gif)
Any other way to ID a box? |
wonkipop |
Jun 22 2021, 11:21 PM
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#4
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Advanced Member Group: Members Posts: 4,299 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille |
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bdstone914 |
Jun 23 2021, 04:40 AM
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#5
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
There is sometimes a white lable inside of the ecu case with the Bosch part number or stamped into the case itself.
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914sgofast2 |
Jun 23 2021, 10:43 AM
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#6
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Senior Member Group: Members Posts: 617 Joined: 10-May 13 From: El Dorado Hills, CA Member No.: 15,855 Region Association: None |
The adhesive label on mine had long since travelled to the Autobahn over the Rainbow. I had to open up the metal box and get the number marked on the circuit board.
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bzettner |
Jun 23 2021, 07:12 PM
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#7
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
I did some red rag rubbing this AM and was able to disclose the numbers on the painted label! It is right for my car. Seeing the MPS was sealed and riveted and the ECU is right for the car, I guessing it's pretty original.
I'd still like to try another to see if it affects my incredible lean idle (IMG:style_emoticons/default/hissyfit.gif) |
bzettner |
Jun 23 2021, 07:14 PM
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#8
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
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BeatNavy |
Jun 24 2021, 04:46 AM
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#9
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
I'd still like to try another to see if it affects my incredible lean idle (IMG:style_emoticons/default/hissyfit.gif) Have you tried the idle mixture adjustment knob? That ECU should have one. |
bzettner |
Jun 24 2021, 07:14 AM
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#10
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
Yes, I currently have the enrichment knob at full rich. Something has changed recently after 1000's of happy miles. (IMG:style_emoticons/default/driving.gif) I've been reading, searching, bench testing etc for some time. I'm working with a wide band AF meter. I've got an incredible lean stumble leaving stop signs as well as a wavering lean idle (16-18). (IMG:style_emoticons/default/hissyfit.gif)
I'll report/ask more once I chip away at all of the "regular" challenges associated with the D-jet system, distributor and all the other things I've read up on for the last 8ish years of ownership. Like @rjames , I have been eliminating things, one by one with the associated frustration of "no luck, yet". (IMG:style_emoticons/default/headbang.gif) When I do ask for help, I'd like to be prepared for the suggestions and help and questions that come with those "help threads". I haven't given up, yet! (IMG:style_emoticons/default/ar15.gif) |
JeffBowlsby |
Jun 24 2021, 09:07 AM
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#11
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914 Wiring Harnesses Group: Members Posts: 8,509 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Unless these have been done recently, put the ECU down until you...
1stly: Install a new fuel filter and check your fuel pressure for spec or irregularities 2ndly: Send your injectors including the CSV out for cleaning/flow testing. 3rdly: Reinstall the cleaned injectors and road test Avoid making changes/adjustments that may not be needed or appropriate to fix a system that apparently has worked well for years as it was. |
bzettner |
Jun 24 2021, 09:30 AM
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#12
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
All of those items, Jeff have been done…some more than once! I have a long list of checks, adjustments, repairs and test drives that I’ve completed. Again, once I get to a virtual dead end, I’ll ask for more help from those if you that have been there and done that!
I’ve utilized the past collective wisdom of this great forum extensively…but a lot of you have multiple ECU’s and MPS’s for a reason |
rjames |
Jun 24 2021, 10:06 AM
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#13
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I'm made of metal Group: Members Posts: 3,933 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest |
speaking of...have you tested your MPS?
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bzettner |
Jun 24 2021, 04:56 PM
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#14
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Member Group: Members Posts: 211 Joined: 2-June 13 From: San Antonio, TX Member No.: 15,951 Region Association: Southwest Region |
Yes, for your consideration, I rechecked my MPS per PB Anders' stuff. Both resistance numbers are as specified and his vacuum test, pull 10" of mercury and if it drops to 5" within a minute, it's a leaker. Mine drops 2.5" in one minute. According to PB, that's good enough.
Whether or not that's good enough is a big grey area to me. The only other MPS I have access to, sealed and never opened, leaks to 5" within 20 seconds! (IMG:style_emoticons/default/confused24.gif) |
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