sr wont start (help)

[Turb0wned]

i just finished my sr swap and when i went to start it the engine turns but wont start the fuel relay is not kicking, the relay and the fuel pump are both good and the relay is getting the 12 volt but i dont think its getting ground anyone know what i can do?

[Turb0wned]

anyone?

[Silvia007]

Well, just custom a ground wire to it.

[quiksilvia]

mine did the same thing and i had to have a local shop do that part. i know that didnt help, but i felt ur pain...

[Turb0wned]

do you know what the shop did to make it work?

[Silvia007]

Lets see, I think you can do some tests to make sure it is your relay, did you check the fuel pump fuse? Just little things like that, I'm sure you don't have to take it to a shop. What about the wiring that goes by the battery. You sure you got those spliced and connected properly? I'm just saying because i"ve done like 7 S13 SR Swaps into S13's and the first two I had similar problems and it's due to improper wiring. The last 5 started on the first try and there isn't a lot of things that could go wrong. Just the wiring by the front of the car is the most important set that you have to rewire because some of the wires do not line up if you didn't already know that. If everything is correct, just hardwire the fuel pump to the battery to see if that works, if it does and you can't get the original relay to run the fuel pump, then just custom your own relay to run the pump, if you're not sure on how to do that, just let me know.

[quiksilvia]

i did all the tests and re re rechecked the wiring, and it was exactly right with ht's info, so i dont know if i had forgot something or what. the shop i took it to was evolution motorsports, but any shop that does sr swaps or 007 here can help u out

[Turb0wned]

when i had the fuel pump manually it pumped but i was getting no spark.... im going to check the wiring today because im sure its the wiring but where?? any ideas

[180fan]

only a few places could cause "no spark". check your ignitor yet?

[Turb0wned]

ok i got the car to start now i have another problem....the car starts up fine but then when it drops down to idle (at about 500) it idles ever rough for a few seconds then shuts off.... what can this be? i car is low on gas but im pretty positive thats not the problem i dont see any leaks or maybe there an air leak somewhere??? any ideas?

[Turb0wned]

also the MAF from a 91- 240sx works on the sr right? or does it have to be from a 89-90? maybe this is why its doing it? i saw it on the sr parts list thread....

[Def]

Sounds like a vacuum leak to me. That's what my SR does when I leave off hoses and stuff - which is more often than I'd like to admit.

[Turb0wned]

im thinking now that its the MAF i need one off of a 89-90 im use the 93 MAF if im wrong just let me know

[Turb0wned]

my dad has a 90 240 he is selling but if i swap the MAF from my 93 to the 90 is it going to work on the 90 240?

[kylaris]

Try starting the car without the maf, and see it it idles better with it. My car idled fine with out maf but not with the MAF on. That was because I didn't connect the MAF to turbine. And it started and died right off.

I don't know, if the KA24DE works, I heard that it will start but won't work as nicely as the KA24E MAF does. Also I doubt the Ka24De will work with Ka24E MAF. I may be wrong.

Hope this helps,

[nismostate]

no 91-93 maf will not work. only the 89-90 maf will. im positive it's the maf that's causing your car to shut off.

Turbowned, i doubt that too.

[Turb0wned]

thanks im going to get the MAF of a 90 240 that my dad got to sell ill let you know what happened hopfully i dont run into anymore problems

[Turb0wned]

it was the MAF got the sr running yesterday!

[got2b240]

sweet! Im glad you found the problem.