need help s13 sr20det wont start - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

oaksman513 · 10-06-2011, 03:34 PM

Hello im new here and not the best at fixing electrical problems. I have a 91 s13 with an s13 redtop sr20det swap. I purchased this car with swap done locally. Well i was out driving and was beating on it and it shut down and hasnt started since. I have now found out i have no spark, no fuel, no power to cas, of maf. I have power to egi relays but not after them. So since then i have tryed another ecu and it didnt work. I have pulled out my engine harness and stripped all down checked then taped. I still have the same problem. Any help would be greatly appreciated and if anyone local to cincinnati ohio wants some extra money to help me get this running your more than welcome. Thanks.

oaksman513 · 10-06-2011, 08:36 PM

Anyone? I really could use some advice.

ultimateirving · 10-06-2011, 11:04 PM

check common grounds, sounds like total system failure. Pick one item and start there.

Zero-Offset · 10-06-2011, 11:26 PM

have you checked the fender well wiring that passes above your front drivers side tire? if it isn't tucked up and you rub through it = byebye electronics.

oaksman513 · 10-07-2011, 07:04 AM

Great idea. I was unaware they ran through there but I went out and checked and I still have my wheel well in. So so I guess I pull it out and check.

oaksman513 · 10-07-2011, 07:07 AM

Does anyone possibly have a list of all ground connections to the car I might be able to check. I checked the two on the head cleaned and put them back on. Thanks again.

oaksman513 · 10-07-2011, 08:21 AM

Fender wires are good. How would i go about checking power to my ecu. Should there be a light on the ecu when i turn the key to on? Noticed there were four relay behind the driver kick panel fuse box im going to find out what these are and test them. Thanks.

VNG704 · 10-07-2011, 08:36 AM

Get a hold of the Factory Service Manual(fsm). Within that, you'll find the needed information you are looking for. It also has some troubleshoot procedures, if I recall correctly.

whitey240 · 10-07-2011, 08:38 AM

Did your timing chain break?

ultimateirving · 10-07-2011, 03:11 PM

there is no light on the ECU, technically u can do the Diagnostic by turning the little adj screw on the ECU( there are tons of procedures of How-to do this online) that would be the only light to light up. My ecu doesnt have the light so i cant garuntee thats an accurate means of testing if the ecu has power. Best bet is to get a wiring harness pinout for ur ecu and probe test the power wires with a volt meter.

oaksman513 · 10-07-2011, 03:22 PM

Timing chain is good. So today we put a different ecu in the car. It started but wouldnt shut off when you pulled out the key. And after several testing procedures the new ecu burnt up. Also the original ecu had the ecu power strip on the board burn up. Also if we jiggled around to ecu harness it would get power and start but trying to find that short causes it to burn up. So what does someone think about this. I tried to explain the best I could. Thanks again to all!

Luvs2slide · 10-08-2011, 12:57 AM

Sounds like your harness is the culprit. You may have to unravel the OEM tape/material and check the wires individually, or just buy another good harness.

oaksman513 · 10-08-2011, 08:05 AM

Ya that's what I'm thinking also. Taking both ecu to get repaired today so I hope everything works as far as them being repairable. Got another harness going to run through it and make sure it's good. I will update my situation today. Thanks to all.

squigy · 10-10-2011, 05:44 PM

ours wouldnt start when we first did the swap.....
we brought it to our local automotive electrical shop they found the problem in 1/2 hour....
believe it or not the stop light switch was grounding out causing the 50 amp fuse to pop.
we put a new stop light switch and a new fuse never had a problem since car runs great...
So it was a short that caused all the frustration, and alot, i mean alot of cursing.

10-06-2011, 03:34 PM	#1
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	need help s13 sr20det wont start Hello im new here and not the best at fixing electrical problems. I have a 91 s13 with an s13 redtop sr20det swap. I purchased this car with swap done locally. Well i was out driving and was beating on it and it shut down and hasnt started since. I have now found out i have no spark, no fuel, no power to cas, of maf. I have power to egi relays but not after them. So since then i have tryed another ecu and it didnt work. I have pulled out my engine harness and stripped all down checked then taped. I still have the same problem. Any help would be greatly appreciated and if anyone local to cincinnati ohio wants some extra money to help me get this running your more than welcome. Thanks.

10-06-2011, 11:04 PM	#3
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 37 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	check common grounds, sounds like total system failure. Pick one item and start there. __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

10-07-2011, 08:38 AM	#9
whitey240 Zilvia Member Join Date: Aug 2005 Location: Pittsburgh, PA Posts: 200 Trader Rating: (5) Feedback Score: 5 reviews	Did your timing chain break? __________________ 1993 Nissan 240sx - SR20VET VVL, GT30R \|\| 11.3@122

10-07-2011, 03:11 PM	#10
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 37 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	there is no light on the ECU, technically u can do the Diagnostic by turning the little adj screw on the ECU( there are tons of procedures of How-to do this online) that would be the only light to light up. My ecu doesnt have the light so i cant garuntee thats an accurate means of testing if the ecu has power. Best bet is to get a wiring harness pinout for ur ecu and probe test the power wires with a volt meter. __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

10-08-2011, 12:57 AM	#12
Luvs2slide Zilvia FREAK! Join Date: Oct 2006 Location: NW Florida Age: 43 Posts: 1,490 Trader Rating: (81) Feedback Score: 81 reviews	Sounds like your harness is the culprit. You may have to unravel the OEM tape/material and check the wires individually, or just buy another good harness. __________________

10-06-2011, 08:36 PM	#2
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Anyone? I really could use some advice.

10-06-2011, 11:26 PM	#4
Zero-Offset Zilvia Junkie Join Date: Nov 2006 Location: Vancouver BC Age: 34 Posts: 402 Trader Rating: (1) Feedback Score: 1 reviews	have you checked the fender well wiring that passes above your front drivers side tire? if it isn't tucked up and you rub through it = byebye electronics.

10-07-2011, 07:04 AM	#5
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Great idea. I was unaware they ran through there but I went out and checked and I still have my wheel well in. So so I guess I pull it out and check.

10-07-2011, 07:07 AM	#6
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Does anyone possibly have a list of all ground connections to the car I might be able to check. I checked the two on the head cleaned and put them back on. Thanks again.

10-07-2011, 08:21 AM	#7
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Fender wires are good. How would i go about checking power to my ecu. Should there be a light on the ecu when i turn the key to on? Noticed there were four relay behind the driver kick panel fuse box im going to find out what these are and test them. Thanks.

10-07-2011, 08:36 AM	#8
VNG704 Zilvia FREAK! Join Date: Dec 2008 Location: Wisconsin Posts: 1,575 Trader Rating: (17) Feedback Score: 17 reviews	Get a hold of the Factory Service Manual(fsm). Within that, you'll find the needed information you are looking for. It also has some troubleshoot procedures, if I recall correctly.

10-07-2011, 03:22 PM	#11
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Timing chain is good. So today we put a different ecu in the car. It started but wouldnt shut off when you pulled out the key. And after several testing procedures the new ecu burnt up. Also the original ecu had the ecu power strip on the board burn up. Also if we jiggled around to ecu harness it would get power and start but trying to find that short causes it to burn up. So what does someone think about this. I tried to explain the best I could. Thanks again to all!

10-08-2011, 08:05 AM	#13
oaksman513 Zilvia Addict Join Date: Aug 2011 Location: cincinnati ohio Age: 41 Posts: 748 Trader Rating: (28) Feedback Score: 28 reviews	Ya that's what I'm thinking also. Taking both ecu to get repaired today so I hope everything works as far as them being repairable. Got another harness going to run through it and make sure it's good. I will update my situation today. Thanks to all.

10-10-2011, 05:44 PM	#14
squigy Leaky Injector Join Date: Apr 2011 Location: South Florida Posts: 73 Trader Rating: (0) Feedback Score: 0 reviews	ours wouldnt start when we first did the swap..... we brought it to our local automotive electrical shop they found the problem in 1/2 hour.... believe it or not the stop light switch was grounding out causing the 50 amp fuse to pop. we put a new stop light switch and a new fuse never had a problem since car runs great... So it was a short that caused all the frustration, and alot, i mean alot of cursing.