ca18det swap help !!

Post by **ztuner34** » Fri Jul 17, 2009 8:22 pm

OK . so ive been doing alot of research on the web and nico club and nwn b4 i posted this . i even posted on nwn ( dont get me wrong its a great site ) but still no help =[

a couple weeks ago i swaped a ca18det in my 240 which original had a ka24e . after getting it in i pluged in all the harness plugs and grounded everything . when i went to go plug my battery in some how the wires got flopped and i had reversed the polarity . i was dumb and even thou i saw sparks i still pluged it in and left it for about 2 seconds b4 i saw electrical tape melting around the battery connectors . none of the fuses or relays went bad thou .

every one has been telling me to check my fuses *,relays, and grounds but they are all fine .

right now the car will crank over and i get lights in the cabin ( dome light , cluster gauges ) and the radio turns on .

what i dont get is .

fuel pump will not turn on ( we tested and it dose not get 12v at the plug )my cluster indicator lights dont turn on ( handbreak liight , check engine light )my seat belts do not return my turn signals wont turn on

soo here are my questions

1. even thou none of the fuses poped could i have fried anythin ? 2. could my ecu be bad ? and is there a on light on the ecu ? 3. has anyone had a similar problem and if so how did you fix this ?

thanks in advance !
Modified by ztuner34 at 5:08 PM 7/18/2009

Post by **trevr** » Sat Jul 18, 2009 8:45 am

You didn't mention anything about your relays, you may want to start replacing those first before looking at the ECU.

This may help you narrow it down.

zerothread?id=140879

Post by **ztuner34** » Sat Jul 18, 2009 10:51 am

trevr wrote:You didn't mention anything about your relays, you may want to start replacing those first before looking at the ECU.

This may help you narrow it down.

zerothread?id=140879

sorry i did forget to mention we swaped the relays with ones from a running car . buuuut your link did help me . im starting to test more places .

Post by **ca18detgabby** » Sat Jul 18, 2009 4:53 pm

sounds like you melted some wires...... may have just wired somethingg wrong BEFORE you put the battery in wrong.

Post by **ztuner34** » Sat Jul 18, 2009 5:01 pm

ca18detgabby wrote:sounds like you melted some wires...... may have just wired somethingg wrong BEFORE you put the battery in wrong.

hmm that sounds like its right . could they have melted even if the fuses didnt pop ? im gonna pull the hole upper harness out on monday and test it . ill keep you guys updated . thanks

Post by **jynxtrix** » Sun Jul 19, 2009 9:21 am

Just a side note, one of the most significant warnings in the s13 ca18 fsm is that there not be power to the car when connect, or disconnect the ecm. Also, there is a relay that tells the ecu to turn on with the ignition, and in turn, tells all those guages and crap to come on as well. it's a well hidden relay, but if i remember, it is right next to the ecu. at least it is on my s14 anyway.

Post by **ztuner34** » Sun Jul 19, 2009 6:46 pm

jynxtrix wrote:Just a side note, one of the most significant warnings in the s13 ca18 fsm is that there not be power to the car when connect, or disconnect the ecm. Also, there is a relay that tells the ecu to turn on with the ignition, and in turn, tells all those guages and crap to come on as well. it's a well hidden relay, but if i remember, it is right next to the ecu. at least it is on my s14 anyway.

im trying to look for that relay ! im not sure if s13 have them . maybe its the egi relay in the fuse box ? idk . tomorrow im gonna double check everything . also there was a blue relay behind my fuse box inside my car, the one on the driver side . does anyone no if that could be it ?

Post by **ztuner34** » Sun Jul 19, 2009 7:00 pm

http://zilvia.net/f/tech-talk/....html

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

maybe this is my problem ? it has all my symptoms .. but the wiring was already done and working in another s13..

Post by **fabio240** » Mon Jul 20, 2009 5:27 am

Look in the fuse box by the battery there is a 10amp fuse in there for the power in the ecu and also rewire your plugs under the battery.

Post by **ztuner34** » Mon Jul 20, 2009 2:42 pm

fabio240 wrote:Look in the fuse box by the battery there is a 10amp fuse in there for the power in the ecu and also rewire your plugs under the battery.

UPDATE ,

so i was messing around with a test light today and noticed that when i closed the on either the fuel pump fuse or the eng cont fuse my check lights would turn on and my seat belts would work again .

Post by **fabio240** » Tue Jul 21, 2009 9:35 am

Now you just have to rewire the plugs under the battery make sure you use the frsport wiring diagram for the SR thats probably why your not getting any fuel unless ur relay crapped out on you other than that I would use a jumper wire where the fuel pump relay is.

Post by **ztuner34** » Tue Jul 21, 2009 9:45 am

fabio240 wrote:Now you just have to rewire the plugs under the battery make sure you use the frsport wiring diagram for the SR thats probably why your not getting any fuel unless ur relay crapped out on you other than that I would use a jumper wire where the fuel pump relay is.

alright man thanks. im gonna wire it straight withought plugs today after work . ill let you no how it goes .

Post by **fabio240** » Tue Jul 21, 2009 9:49 am

Make sure that you hook up all of your grounds mainly the big one thats on the battery tray to the intake manifold.

Post by **ztuner34** » Tue Jul 21, 2009 7:30 pm

so i wired the wires straight together with out the plugs using the frsport sr20 wiring guide and im still getting the same issue.. when i give power directly to the ecu fuse or the fuel pump fuse everything seems to work but the fuel pump.. im guessing this is a upper harness wiring problem ?

Post by **fabio240** » Wed Jul 22, 2009 6:25 am

Your problem is either A. Your fuel pump relayB. Your fuel pumpC. Your wiring

Post by **ztuner34** » Sat Jul 25, 2009 7:08 pm

fabio240 wrote:Your problem is either A. Your fuel pump relayB. Your fuel pumpC. Your wiring

im gonnnna go with C.

anyone else have any ideas b4 i tear apart my harness ?

Post by **fabio240** » Mon Jul 27, 2009 5:42 am

It should only be the two plugs under the battery tray. the colors should be black and pink or black and purple

Post by **jynxtrix** » Mon Jul 27, 2009 6:03 am

Post by **ztuner34** » Wed Aug 12, 2009 4:34 pm

hey guys . its been awhile since i updated but this is where i stand now .

i put a new harness in and still has the same problem..

can someone link me to a place to show where all the ground placements are ? or can some one tell me ? i looked there the fsm and i only saw the two on the intake manifold and and big one from the battery tray to the intake manifold .

Post by **boost_boy** » Sat Aug 15, 2009 7:30 pm

ztuner34 wrote:hey guys . its been awhile since i updated but this is where i stand now .

i put a new harness in and still has the same problem..

can someone link me to a place to show where all the ground placements are ? or can some one tell me ? i looked there the fsm and i only saw the two on the intake manifold and and big one from the battery tray to the intake manifold .

Bad wiring job, my friend. Your problem is not unique, but it's very hard to help you when we can't see the way you have your car hooked up.

Dee

Post by **fabio240** » Wed Aug 19, 2009 2:08 am

Have you checked or changed your relays at all? That would be my next step does the car turn over? and is your car an auto or manual?

Post by **ztuner34** » Fri Aug 28, 2009 11:03 am

yes i swaped the relays out with ones out of a running 240 . and my car is manual . ill get some pics asap

Post by **ztuner34** » Fri Aug 28, 2009 11:09 am

oh and the car turns over . also the lights on the ecu do not turn on

fabio240 wrote:Have you checked or changed your relays at all? That would be my next step does the car turn over? and is your car an auto or manual?

Post by **fabio240** » Fri Aug 28, 2009 11:33 am

Your wiring is screwed up or your ecu is fried....

Post by **ztuner34** » Fri Aug 28, 2009 6:50 pm

is there anyway to test my ecu ?

Post by **float_6969** » Fri Aug 28, 2009 8:35 pm

See if your ECU works in a good running CA.

ca18det swap help !!

ca18det swap help !!

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