injectors injectors injectors....
05-08-2010, 08:17 PM
#1
Junior Member
Thread Starter
iTrader: (1)
Join Date: Oct 2008
Location: Edmonton, Alberta
Posts: 140
Total Cats: -1
injectors injectors injectors....
Hey still having issues with my injectors. My previous thread was this..
https://www.miataturbo.net/diy-turbo-discussion-14/injector-issue-46929/.
but I made a mistake. Actually ALL injectors are firing wide open causing a buttload of fuel when KEY ON ENGINE OFF. I took a peak at the 1.6L service manual and traced the circuit. The PCM is the control side of the injector circuit. Power all the time but grounded via PCM. I checked the connectors with the multimeter and did not find a short to ground. I swapped the MSPNP to the stock oem PCM/ECU and it did NOT fire the injectors wide open at KEYON ENGINE OFF.
I took a look at the DIYautotune miata quickstart guide and it didn't say anything else besides pulling the fuse and starting it pretty much. So I don't think I'm missing something obvious?
I just literally had it repaired at diyautotune a month ago and did not touch anything else. This is why you don't used mspnp from unknowns folks...
https://www.miataturbo.net/diy-turbo-discussion-14/injector-issue-46929/.
but I made a mistake. Actually ALL injectors are firing wide open causing a buttload of fuel when KEY ON ENGINE OFF. I took a peak at the 1.6L service manual and traced the circuit. The PCM is the control side of the injector circuit. Power all the time but grounded via PCM. I checked the connectors with the multimeter and did not find a short to ground. I swapped the MSPNP to the stock oem PCM/ECU and it did NOT fire the injectors wide open at KEYON ENGINE OFF.
I took a look at the DIYautotune miata quickstart guide and it didn't say anything else besides pulling the fuse and starting it pretty much. So I don't think I'm missing something obvious?
I just literally had it repaired at diyautotune a month ago and did not touch anything else. This is why you don't used mspnp from unknowns folks...
Reply
0
0
05-08-2010, 09:20 PM
#3
Junior Member
Thread Starter
iTrader: (1)
Join Date: Oct 2008
Location: Edmonton, Alberta
Posts: 140
Total Cats: -1
I haven't tried unplugging the TPS connector yet, I'm going to look up on why it would do that. Thats what I don't understand. Must be some aftermarket thing. I'll give that a shot tonight. Apparantly the VTPS mod has been done on the mspnp, but I have a stock manual TPS. I'll do a bit more fishing around and see what I can find, unless sometime explains it to me right here and now. 
Reply
0
0
05-10-2010, 12:36 AM
#4
Junior Member
Thread Starter
iTrader: (1)
Join Date: Oct 2008
Location: Edmonton, Alberta
Posts: 140
Total Cats: -1
I haven't tried unplugging the TPS connector yet, I'm going to look up on why it would do that. Thats what I don't understand. Must be some aftermarket thing. I'll give that a shot tonight. Apparantly the VTPS mod has been done on the mspnp, but I have a stock manual TPS. I'll do a bit more fishing around and see what I can find, unless sometime explains it to me right here and now.
update: Unplugged the TPS and it stopped flooding the cylinders. Weeeeird. Now I have a massive vacuum leak I have to find. :(
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
