So my swap is finally done , well until I ran into this problem : I started my H22 up for the first time today and everything sounded perfect . Took it on the road and it wouldn't rev pass 4000 RPM . Took it back to my mechanic to make sure he had VTEC wired in correctly and he did . I'm running a chipped P28 ECU so I'm guessing it's a bad tune ?? The CEL is on .
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Faulty ECU ??
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Ok well I have to send the ECU back , just gonna have them send me a P13 . But I really need to get the car out of his shop to have some things done by Wednesday ! He say's it's not safe to drive with the ECU in limp mode so can I just put the PT3 back in and drive it like that ?? I know I wont be hitting VTEC but right now I just really need the car moving !!
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I agree with deev, if you've got a chip, you need to make sure your ECU is tuned specifically for your engine..
Try checking for codes. If you don't already know how to do so, just find the connector sticking out of the ECU behind the passenger kick panel and jump it. The CEL will flash with the key in the ON position.1991 HONDA ACCORD EX COUPE
2014 Volvo XC70 T6 AWD ----- 2000 Honda Odyssey LX
2004 Nissan Altima 2.5 S ------ 1994 Toyota Corolla DX
2001 Subaru Outback --------- 1990 Infiniti M30
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Originally posted by mjsstanley View PostSo can I drive with the PT3 for like a day or two and just go easy on it ??
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You can drive it just fine on the PT3 for a short time. Just don't rev very high. Shift at 3000rpm or so, and never floor it. It won't run correctly, but it will run. I'd feel safer on a PT3 than a chipped P28 in limp mode.
However, you're still assuming the ECU is bad... pull your codes. Whatever is putting that P28 in limp mode may very well put the PT3 in limp mode. That CEL isn't telling you it's a bad ECU, it's telling you something else is bad, and the ECU is doing its job by reporting it to you. Read the code and fix that problem, or you may end up with a damaged engine.
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Well Deev thats the thing : with the PT3 in , there's no check engine light at all . With the P28 in the check engine light is solid . Even when we tried to pull codes out of it , it wouldn't flash , it just stayed solid . Also , a buddy of mine with a chipped P28 in his Civic put his ECU in and the car drove fine , hit VTEC with no problem .
So I contacted the company that I got the ECU from and the guy said he never got an email on what setup I had and what proper basemap to use . So basically the idiots sent me a blank chip . But I have Eprom Chip Basemap on the way now and hopefully that will solve the problem .
I decided to leave the car at my mechanic's shop because with the PT3 , it didn't wanna idle after the engine was warm and it didn't have much power with the P28 .
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Yeah, if the CEL is solid, the ECU is bad... or if the chip was blank, that's entirely possible.
Even with a basemap, I wouldn't drive the car until you actually have it tuned. Basemaps aren't for driving, they're just to get the car running to be tuned.
It also seems to me that the company you got the ECU from is pretty shady, if they would send you something like that without even asking what it's for. Hopefully that ECU didn't cause any damage to the engine...
A P28 is a stock Civic ECU. Quite easy to find in junkyards, ebay, etc... I could get one in a local junkyard for $15. A chipping kit runs about $20-$25. I really hope you didn't pay an arm and a leg for that ECU...
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