chartscharts
Cadet
- Joined
- Feb 28, 2018
- Messages
- 9
Howdy!
Yesterday I took my new-to-me 2010 Tohatsu MD90c2 out on the water for the first time.
After engine ran, even in neutral at idle, for a few minutes, it would have all three lights blink on the tach, and RPM wouldn't go above 3000ish. Stopping/starting the engine didn't seem to make a difference.
Service Manual says "TPS does not function" as the problem there, and that it was "self-diagnosable." I tried the reset TPS process on the water, but I'm not 100% sure I got it right. It didn't seem to make any difference.
So, back at home, I ran the self-diagnosis. and the tach read 6600, with the oil light flashing, and the battery light on solid. There wasn't an exact match in the service manual for that code. Closest was tach6000 with those lights which says "#2TPS power voltage low with wiring or component was once broken/malfunctioned."
I pushed the key in again to get the next fault code, and the only thing that changed was the blinking oil light went solid. The closest match was "#2TPS power voltage high with wiring or component was once broken/malfunctioned" which is of course the opposite of the first code.
Pushed the key in again to get the next fault code and it gave me an exact match for "Oil pump malfunction" which didn't make sense to me.
So I wondered if that was fault history. Not sure if I was looking at the current fault or the fault history, I went through the procedure to delete the fault history.
After that, I ran the self-diagnosis again, and this time it said no errors. Huh.
So, I started the engine on the muffs to try to replicate the original problem I had on the water. No luck. Ran great. Let me RPM up to 4000. No flashing lights. Started/stopped several times but never was able to get any lights or problems. At this point, I realized I should have run on the muffs before doing the self-diagnosis to replicate the problem at home before troubleshooting, but I'm a knucklehead.
Anyway, here's my questions:
1. Does the "delete fault history" function actually clear/reset anything? I thought it was just erasing history. Does it actually reset something?
2. Is there any kind of fault that would be consistent with these symptoms and only happen in the water and not on the muffs?
3. Other ideas about what might be happening?
Thanks in advance.
Yesterday I took my new-to-me 2010 Tohatsu MD90c2 out on the water for the first time.
After engine ran, even in neutral at idle, for a few minutes, it would have all three lights blink on the tach, and RPM wouldn't go above 3000ish. Stopping/starting the engine didn't seem to make a difference.
Service Manual says "TPS does not function" as the problem there, and that it was "self-diagnosable." I tried the reset TPS process on the water, but I'm not 100% sure I got it right. It didn't seem to make any difference.
So, back at home, I ran the self-diagnosis. and the tach read 6600, with the oil light flashing, and the battery light on solid. There wasn't an exact match in the service manual for that code. Closest was tach6000 with those lights which says "#2TPS power voltage low with wiring or component was once broken/malfunctioned."
I pushed the key in again to get the next fault code, and the only thing that changed was the blinking oil light went solid. The closest match was "#2TPS power voltage high with wiring or component was once broken/malfunctioned" which is of course the opposite of the first code.
Pushed the key in again to get the next fault code and it gave me an exact match for "Oil pump malfunction" which didn't make sense to me.
So I wondered if that was fault history. Not sure if I was looking at the current fault or the fault history, I went through the procedure to delete the fault history.
After that, I ran the self-diagnosis again, and this time it said no errors. Huh.
So, I started the engine on the muffs to try to replicate the original problem I had on the water. No luck. Ran great. Let me RPM up to 4000. No flashing lights. Started/stopped several times but never was able to get any lights or problems. At this point, I realized I should have run on the muffs before doing the self-diagnosis to replicate the problem at home before troubleshooting, but I'm a knucklehead.
Anyway, here's my questions:
1. Does the "delete fault history" function actually clear/reset anything? I thought it was just erasing history. Does it actually reset something?
2. Is there any kind of fault that would be consistent with these symptoms and only happen in the water and not on the muffs?
3. Other ideas about what might be happening?
Thanks in advance.
