No solenoid click but has 12.6v from relay?

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ddlaz
Posts: 2
Joined: Sat Jun 23, 2018 10:19 pm
Car: s13

Post

Hey all. I recently acquired an s13 with an sr20 and the wiring is a mess. Beyond that, it started everytime, but cranking was always crazy slow.
I was thinking the reason why the cranking was slow was because the relocated battery had a positive lead from battery to a 200amp fuse before going into the engine bay and splitting off on a power distribution block. I removed the 200amp fuse and put the pos lead directly from the battery to the pdb.
Now that I've done that, the car no longer cranks.

I've checked the following:
- positive and negative side voltage drops relating to the starter
- 12.6v between ground and the starter solenoid when key turned on start.
- 12.6v at starter battery lead to starter body
- 12.3v at starter battery lead to starter body while trying to crank
- solenoid is only pulling .3A
- took starter out and brought it to oreilly, it tested out to be good.
- put a screw driver from the batt lead to the solenoid connector and the starter cranks.
and maybe a few more checks I can't think of right now.

What should I be looking at right now? why isn't the solenoid putting out enough current? partial interlock switch issue?


Enzo702
Posts: 3
Joined: Wed Jun 20, 2018 11:16 am
Car: 1991 Nissan 240sx Hatchback SR20DET

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What gauge wire from battery to starter? Should be 4 or bigger.

If your battery wire is going through a distribution block to the starter. Make sure the distribution block is rated accordingly. 120-200 amps ish.

To simplify it, cut the distribution block completely just to test it directly from batt to starter.


To answer your question, you should be looking at cold cranking amps right now. Make sure your wire gauge is thick enough to carry the amps to the starter. Make sure your battery is charged and tested. Brushing off the terminals from corrosion wouldn't hurt either. Also battery ground strap should be checked.

Keep us updated!

ddlaz
Posts: 2
Joined: Sat Jun 23, 2018 10:19 pm
Car: s13

Post

Solved. Interlock relay was bad or going bad. Had huge voltage drop from the switched relay side(starter signal) to the battery. Tracked it down to the relay. Rigged up a new relay and cranked like a car should.


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