1jz - Is this the starter motor??

**Gibbon** · 17-03-2008, 04:28 PM

Hi

I've had my 1J into MA61 conversion running for about a year now - it's all been running smoothly. However, recently in the last few months, when I go to start the car, it's like the battery is completely dead. I can hear relays clicking, but no cranking. When this happens, if I turn the ignition off - on - off - on - off - on a few times, then it starts.

Other times, it will start first time as soon as the key is turned. Searching through some past posts - it would seem that this might be related to the starter motor - does that sound right?

Thanks for any advice.

**chaserbuddy** · 18-03-2008, 12:20 AM

hey,
well mine did the same thing except after a long hot drive(40 degree weather)
anyway im sure that its starter motor related. well the thing id try first
is getting a rod or something long enough to get to the starter motor
and tap it.(this shakes loose all the crap thats accumilated on bushes and commutator.
anyway if this doesnt work u might have to pull apart the starter motor and do as follows.

1) disconnect the battery
2) remove the starter motor
3) undo the end cap and long through-bolts, and remove the end cover carefully
4) check the brushes are long enough to press firmly on the commutator
5) remove the brush plate, carefully removing the brushes as necessary
6) clean the dirty areas on the brushes and commutator (this may need fine sandpaper)
7) clean out the slots on the commutator
8) check the drive pinion operates smoothly (WD40 is good to losen it)
9) re-grease the shafts and reassemble the motor parts
10) re-fit the motor

Hope that helps

cheers

**Officer Doofy** · 18-03-2008, 01:08 AM

ive known many a 1j to do this out of nowhere after time
Mine did it recently and the simple boost from the battery thru a relay fixed it good.
Have a search its been covered several times

**chaserbuddy** · 18-03-2008, 08:51 AM

ok ill have a search, ill see what i can find anyway.

**Gibbon** · 18-03-2008, 08:53 AM

Thanks - I'll give that a try.

**pato** · 18-03-2008, 09:32 AM

mine does the same thing
i think its a common 1jz problem

**Officer Doofy** · 18-03-2008, 11:54 AM

http://www.toymods.net/forums/showth...er+motor+relay

**lexsmaz** · 18-03-2008, 02:19 PM

I second the relay suggestion, mine did the same until if fitted up a relay now cranks over spot on every time you turn the key ...

**Pimpin_1JZ** · 18-03-2008, 03:16 PM

I have a 1JZ MZ20 and a 1JZ MA70 both have had this problem. I puled the starter out and put in some new copper contacts inside the starter and haven't had a problem since. I'd bet they are worn and dirty and your not getting a good contact.

**chris davey** · 04-08-2008, 06:42 PM

on this topic.

just went to start car. Car is fitted with a main power switch and then a starter button. Turned main power switch on and then hit the button. Heard starter for a very short amount of time and then I lost power to the dash and everything.

Checked fuses in fuse box and footwell and all appear fine.

I bypassed the main power switch and linked the pos and neg with the multimeter pins and that showed 12v and as soon as I hit the starter button it drops to zero so just cuts the whole power out. Seems like a dead short in the starter bushes? Time for a new or reconditioned starter?

**lexsmaz** · 04-08-2008, 06:54 PM

Hi Chris,

I would think that you have a very bad connection at the battery or such, enough to show power until you try & put a load through it which then overloads the connection & causes the voltage to drop off ... Or it could even be the battery, as i have seen both senarios ...

**chris davey** · 04-08-2008, 07:01 PM

ok, I think you have some sort of psychic ability. I just checked the terminals and gave them a wiggle. refitted switch and starts first go. You are the man! +rep