AdrianE

Hi,

I am running an E11v2 on my RX-7 (1995 import), and have come across some strange problems that could be to do with the E11v2 'wiring' or the Halwin software.

The first time I tried to start the engine it ran OK (using about 10-20% throttle) and gave between 11-12 AFR. I let it fast-idle for a minute and then switched it off. Later on I switched on the ignition and adjusted some of the timing values down on the map (which I got from Hitman's website). Then I tried to start it up again, and it just wouldn't do it. I looked at my wideband meter which was reading 14.7 AFR (ie. no fuel was being injected). The fuel pump was working OK, it just shuts off after a few seconds when I key the ignition. But I looked at Halwin software that was running on my Laptop and saw that the "injection time" was still at approx. 6mS, and the timing was 10degrees, as if the engine was actually running!!! WTF?!!

When I turned the key to start the engine again I looked at the RPM guage in the Halwin software. It was cranking at about 200-300rpm. So I think at least the CAS must still be working. The Halwin guage panel still showed 6mS and 10degrees, and when I opened up the throttle and pumped it a bit the Injector guage moved up to 8-9mS.

Next, I took the key out of the ignition and checked the fuses and relays to see if they were OK. The EGI fuse was fine but the EGI relay is showing 300KOhms across its coil terminals. I think its blown! I would expect it to be a few hundred Ohms, is this correct?

If the EGI relay blew then what caused it? I've re-checked the injector wiring from the E11v2 conector to the wires in the loom, and they seem fine. When I left the ignition on for a few minutes, could the injectors have been switched to open and just stuck there, with no fuel pressure (ie. as the fuel pump was off) ? Thereby burning them out and damaging the EGI relay? Can anyone give me some useful advice on this please?

BTW The injectors I'm using are standard 550cc (14 Ohm) primaries and 1600cc (4 Ohm) secondaries.

Thanks,

Adrian

RETed

Was it also displaying RPM's other than "0"???


Yeah, these relays typically spec out to a little under 100-ohms.
300k is kinda high!

Bad relay?


-Ted

AdrianE

Thanks for the reply Ted.

I'm going to buy another relay, but I am not really sure as to the reason why it blew.

The rpm shown on the Halwin software was always 0rpm when I switched the ignition on. This is with the engine not actually running.

Once I've checked the resistance of the injectors, to make sure they're not blown, I'm going to try an earlier version of the Halwin software v1.3, I was using v1.43 (which may have bugs still in it).

RETed

Unless you're seeing RPM's with the engine off, I wouldn't worry about it.
It's looking at the 0 RPM fuel map and displaying the pulsewidth at "0" - I bet it's the same, around 5ms to 6ms.
On top of that, if the engine is cold, it'll try to adjust the base pulsewidth with any fuel correction maps - most likely coolant.
Check the Correction Table display to confirm.


-Ted

j9fd3s

iTrader: (3)

mine would occasionally drop the output side. ie the laptop would connect and show everything working, and the ecu would show outputs, but it wouldnt output. cycling the key usually fixed it, but sometimes it would go into boot mode and you need to reload the firmware