 Subaru Conversion Won't Idle |
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| turnaround89 |
 Apr 29 2019, 06:14 PM
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#1
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Senior Member  Group: Members Posts: 671 Joined: 17-May 08 From: Rockford, Illinois Member No.: 9,067 Region Association: Upper MidWest  |
Hi everyone, so December 2018 was the first time I got to hear the WRX STi motor I purchased run. It ran rough because the intake wasn't connected, hardly any sensors hooked up, etc. However, it ran and that made me happy knowing my investment wasn't useless.
The engine that was purchased is supposed to be a subaru wrx gc8 sti v4 turbo ej20 Cut to a few months later, now I have all the required sensors (MAF, purge solenoid, ignitor, etc) that I was missing purchased and hooked up. Vacuum hoses hooked up and I thought now the engine should run and idle beautifully. Nope, it will fire and run for maybe 3 seconds then shut off. Check out the video in the link. Subaru Engine Video The only thing I dont have hooked up are to the non-pressure side of the intake. I tried plugging these holes today and the car did t idle any better. Now, I need to find a permanent solution to these holes, but I swear the engine is running worse now with everything hooked up then in December with nothing hooked up. Any ideas where I could start? I was thinking fuel pressure and timing would be my next step. In the video you can hear the fuel pump prime the system before the engine kicks over. The wiring harness was sent out to iwire services to be redone and that appears to be functioning properly. Thank you everyone for your help. |
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| turnaround89 |
Sep 1 2019, 02:25 PM
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Senior Member Group: Members Posts: 671 Joined: 17-May 08 From: Rockford, Illinois Member No.: 9,067 Region Association: Upper MidWest |
I was messing around a bit with the engine today and started to start the engine but would disconnect different sensors to see if anything changes.
Too my surprise, disconnecting the MAF got the car to idle, although at really low rpm and a bit rough. However, thats the first tine its idled that long. I took a video of the MAF disconnected and towards the end i reconnect the MAF. The rpms spike after the MAF is connected, but the car immediately dies afterwards. Im assuming a need to find a new MAF, are there any after market MAFs that might work? I thought I got the correct one on the last purchase, but it must not be correct. Looking to find a MAF for a 96 V4 GC8 EJ20K. I believe that is the correct engine designation. Idle without MAF connected As always any ideas are appreciated. Thanks everyone! |
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Posts in this topic
turnaround89 Subaru Conversion Won't Idle Apr 29 2019, 06:14 PM
904svo Just a WAG, Make sure the MAF is installed correct... Apr 29 2019, 06:31 PM Chi-town You need to have everything connected on vacuum an... Apr 29 2019, 07:03 PM turnaround89 One of my concerns was if I got the correct MAF se... Apr 29 2019, 08:33 PM Costa05 Just a thought here. My mazda started doing the sa... Apr 29 2019, 09:05 PM Chi-town The factory bypass valve cannot be vented to atmos... Apr 29 2019, 09:39 PM falcor75 Is there any immobilizer in the ECU that you need ... Apr 29 2019, 09:43 PM turnaround89 I dont believe there is an immobilizer. I can hit... Apr 29 2019, 10:04 PM pploco The PCV vents with filters on shouldn't cause ... Apr 30 2019, 12:26 AM lierofox Mine's the exact same EJ20K engine for my swap... Apr 30 2019, 01:39 AM Chi-town An aftermarket bypass valve can be vented to atmos... Apr 30 2019, 07:15 AM turnaround89 You guys are the best! Greatly appreciate the... Apr 30 2019, 04:16 PM zipedadoo Do you have the speed sensor hooked up? My ej22 ra... Apr 30 2019, 05:44 PM Chi-town Stock BOV needs a little but of vacuum on the back... Apr 30 2019, 07:15 PM turnaround89 Yes, the speed sensor is hooked up. When the ECU ... Apr 30 2019, 08:11 PM lierofox I ended up getting an aftermarket silicone intake ... May 1 2019, 11:08 AM
pploco
I ended up getting an aftermarket silicone intake... May 1 2019, 09:12 PM turnaround89 Hi again everyone,
So I finally have the bypass v... Aug 30 2019, 04:40 PM Chi-town Pull the idle air control motor off and watch it a... Aug 30 2019, 05:36 PM 904svo If you don't have a program to check your engi... Aug 30 2019, 08:12 PM Chi-town ∆ keep in mind it only works with older laptops ... Aug 30 2019, 09:10 PM 904svo
∆ keep in mind it only works with older laptops... Aug 31 2019, 07:26 AM 76-914
∆ keep in mind it only works with older laptop... Aug 31 2019, 08:58 AM turnaround89 Ill look into the idle air control valve today and... Aug 31 2019, 08:37 AM turnaround89 No worries 76-914
It appears the idle air control... Aug 31 2019, 12:44 PM |
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