No CEL with key on , engine off,No start
09-24-20, 08:55 PM
#17
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
I've thought the same. Especially in the beginning when it would react with the weather. Car is stock height and fender liner is intact along with the harness underneath. I replaced the Negative terminal/harness. 2ga to terminal,down to body ,another 2ga wire headed to the stock grounding location near the oil filter. Any other grounds I should look for ? Zero issue hail marying ground wires at this point.
Last edited by Miata256; 09-27-20 at 04:47 AM.
09-25-20, 02:47 PM
#18
Driver School Candidate
I am having the same issue with my 92 SC300. No CEL but one click and that's all. Rechecking my grounds this weekend to see if that works. Theni f not will check the ECU.
09-25-20, 05:50 PM
#19
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Any grounds I should be checking ? I'm not aware of any major grounds besides the one leading from the battery and terminating under the engine.
09-26-20, 02:23 AM
#20
Driver School Candidate
For grounds, I did a quick look and saw one just under the battery after following the negative cable. Checkiing that later today and re-tracing the other wires as well.
09-26-20, 03:42 AM
#21
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
yeah I've replaced that one.. let me know if you find anything. At this point I'm ready to at least to be doing something.
09-26-20, 07:02 AM
#22
Driver School Candidate
09-26-20, 10:12 PM
#24
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Die as in loss of combustion. Electronics still available. Sometimes on ceasing to run , the cel may be on with key on car off, sometimes not, sometimes it will be flickering.
Last edited by Miata256; 09-26-20 at 10:26 PM.
09-27-20, 04:54 AM
#26
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
09-27-20, 06:07 AM
#27
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Following advice from a fellow car enthusiast, efi relay ground is showing Continuity as well as pin 4 on the e10 ecu connector (symbol e11) labeled "ecu ground " . Any help is appreciated.
09-28-20, 01:54 AM
#29
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
workplace associate suggested faulty/corroded fuse am2, suggested jumpers for it. Crank sensor passed via service manual specifications/test procedure, but It has been so long I dont remember doing the cam sensors. Feel like I would have but will recheck when I get off work in a few hours. Any fuse culprit suggestions ? There aren't many in the "ecu power circuit" according to the service manual diagram. Or just everything ign,efi,main related.? Thank you for the input.
09-28-20, 02:47 AM
#30
Driver School Candidate
Thread Starter
Join Date: May 2020
Location: Alabama
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
I'm showing the 30A AM2/60A main big plastic fuses, 30a blade INJ and 30a blade efi in the underhood box, and INJ (engine) 7.5a fuse (#5 )in the kick panel box as being in the ecu power circuit. Anything else I should be looking at ?