 Chances of fixing ECU issue by checking Ohm's etc ?, stock 1.7 D-jet ECU |
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| Literati914 |
 Jun 17 2025, 09:27 AM
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Advanced Member  Group: Members Posts: 2,238 Joined: 16-November 06 From: Dallas, TX Member No.: 7,222 Region Association: Southwest Region  |
The problem - I have a stock 2.0L d-jet ECU that starts and runs my 1.7L engine just fine, though I suspect that the engine's running too rich with it .... and I've read of the wrong ECU causing hydro-lock to these engines. So, I'm kind of afraid to even start the engine on this ECU.
I purchased a used 1.7 ECU a few weeks back - $40 off the Samba but there were no guarantees as the guy said he purchased an old VW repair shop that it came out of and had no idea if it worked. So, I vaguely remember a video posted (somewhere?) where the guy was diagnosing a no start issue by running through all the pins of the ECU and checking Ohm's, continuity etc. I can't find the video now unfortunately. I know there's a special D-jet testing machine - but would finding an off electrical value not allow for repair inside the ECU? I haven't opened this 1.7L unit up yet - it may have obvious damage. I was wondering if it's even worth breaking open? |
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| JeffBowlsby |
Jun 17 2025, 11:23 AM
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,222 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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Send it to ECU Doctors in FL. They will test it and can repair it if necessary.
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Posts in this topic
Literati914 Chances of fixing ECU issue by checking Ohm's etc ? Jun 17 2025, 09:27 AM
Superhawk996 The wrong ECU will not hydrolock an engine unless ... Jun 17 2025, 10:34 AM Superhawk996 You need to figure out what 1.7L system you have
... Jun 17 2025, 10:39 AM Literati914
You need to figure out what 1.7L system you have ... Jun 17 2025, 10:59 AM
Dave_Darling . .."I had a period where I was swapping ECUs... Jun 19 2025, 11:20 PM Literati914
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The 73’ 2.0l system did use the 1.7L ECU but... Jun 17 2025, 12:04 PM |
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