P1507-Tried everything except.....

[evan55]

Originally Posted by Gibbons98legacygt

with you saying it happens when you swich gears it sounds like it would be the neutal switch is what messed up it is really easy to change its on the side of the trany i changed mine in like 10 min and there only like 20 bucks so i would try that

I just ordered one for $37 CAD. What does the neutral switch look like? is it the bolt with a wire connected to it?

* Registered users of the site do not see these ads.

[Gibbons98legacygt]

yes it is the bolt coming out of the left side off the trany there are to tho so you have to get the right one you have to follow the wires to the top of the transmission where there are to connectors you want to replace the brown one the other one is gray that is the reverse switch. all you do in unconnect it then un screw it then screw the neww in and plug it in

[Mike_Subaru]

Hey Guys, and Gals...

The Tranni Switch Fixed it... $27.95 After $280.00 on other parts I purchased....

The switch can be checked without getting under the car...incase anyone wants to know. Above the bell housing (under the air cleaner) next to the starter is a Brown two wire connector. Un-plug it and ohm it out from there. Mine was OPEN Circuit in and out of gear.

Thanks All...


My Local Subaru dealership did not have a clue. I am going to try to get a free oil change if I tell them how I fixed it.

Why don't the dealerships share these solved problems...???

[evan55]

Ok I'm in the process of doing the switch right now, I have the bolt off, but i cant seem to get the switch part off because there is a black piece that is holding it in. How do i get it off?

Here is a pic:



Edit: Got it installed, does it matter if I didn't use the black clip piece?, it came off.

[Mike_Subaru]

Use a tie wrap or tape it to the other connectors in that area.... Do not let it roam around freely....

[evan55]

I'm still getting the P1507 CEL after installing a new neutral switch, I don't know what else to try besides cleaning the IACV,

Maybe I shouldn't use the washer for the neutral switch?

[Dziuggy]

great info here. i have been getting same P1507 code on 02 outback. both times i got it i was coasting down the hill in neutral. after CEL reset it did not happen for a week until i did same thing - coast down hill in the neutral.

so i would assume it the neutral switch here. but without this thread i probably be cleaning the IAC


cheers

p.s.

here is the subaru part number for the switch for manual transmission: 32008AA074 it lists same part number for 93-03 impreza, 95-05 legacy and outback (non turbo), 98-03 forester

[Dumbscout]

So, sometimes the Neutral safety switch fixes it, and sometimes it doesn't? I'm having the same issue, everytime I pull into my driveway almost my car dies on me. I just cleaned my idle control solenoid tonight, I'm gonna go and have my codes re-read, b.c I did some other stuff tonight, and I had previously had other codes, but it seems to only really be when I'm going down hill and hit the clutch to shift. I'm going to try to test the neutral safety switch tomorrow, it would be nice to get this fixed so I can get my inspection done.

~~~~~~
edit: I wanted to state that my Idle control solenoid was gunky, and nasty, and really hard to move, so cleaning it was definitely not wasted time, but it didn't make the problem go away. This thread has really helped me out a lot, I'm very hopeful that replacing that switch will fix my issue, although I was hoping it was the same switch as the back up lights, b.c they very rarely come on for me, so I might swap both out while I'm under the car. How did everyone else's issues work out? Did you guys figure anything else out after you posted on here, or did this fix it for the most part?

[Dumbscout]

Sorry, couldn't sleep tonight so I came back and re-read the post, there were a few people who have tried everything I've tried, and they ddi the neutral switch and it didn't work for them, what did you guys end up doing, and did it work, or did you just give up, or sell the car or something? Just wondering b.c it seems on a lot of posts around the web people never post back what the final correct solution was, lol.

[POSBUTAWD]

I ended up cleaning the IAC valve and the idle has been spot on ever since. *knock on wood*

Jim

[mguyrt69]

Hey guys, I'm new to this forum and i'm a little bit of a novice when it comes to cars so please bare with me.

I have a 99 Impreza with about 130k miles. It has the following symptoms:
Starts badly on winter mornings. (starts at 4-500 rpms, coughs and sputters for a few seconds then jumps to 2000.
Idles high when cold but once car is warm idle drops really low, almost dies, then jumps up to 1500, then back down.
CEL is on. P1507.
Car speeds up and slows down randomly in gear!
Also, if you are driving in gear, you are coming to stop and you put it in neutral, idle stays around 1500 until about 5 seconds after you have come to complete stop.

I replaced the neutral switch and fired it up and the idle was a little high but in general the car ran great! It was like it just got a tune up, only the idle still fluctuated a fair amount and it still stayed at 1500 untill 5 seconds after coming to a stop (And CEL still on).

The next day I disconnected the battery, removed and cleaned IACV, Throttle body, replaced TB gasket. I put it back on the car, reconnected battery and started it up. Idle jumped way up to 2500. I tried adjusting TPS but as the rpms get close to 1000 the engine suddenly drops to 3-400 rpms and almost dies. Barely turn TPS back other way and idle races to 1500. Immediately after replacing neutral switch I made this same adjustment on the TPS and the idle didn't fight with me, but fail safe (or CEL?) was already initiated....

Now, now matter how I adjust the throttle plate resting position or the TPS I can't get it to stay happy at anything near 1k rpms. Lower rpms run really rough (the exhaust is 'popping' out bursts of air) and CEL is still on. Car will just be idling and suddenly it races up to 2000 rpms then slowly drops down to 800.

Sorry about the long post I wanted to try and draw a clear picture of my situation. I have an IACV on order, will get it on the 14th. If anyone has any ideas, let me know! I will post a reply here when I have replaced the IACV.

P.S. The car has a cold air intake!

Thanks!

99 Impreza Outback Sport 2.2l w/CAI.
2001 Forester L w/Weapon R Short Ram

[POSBUTAWD]

There is a good chance a new IAC will solve your problem. Make sure you bring the TPS and throttle plate adjustments back to spec though. I don't know what it is, but I'm sure Subaru has a voltage range for closed throttle.
I cleaned my IAC and did the adjustments at the valve itself. It hasn't acted up in months since then. Knock on wood, of course.


Jim

[mguyrt69]

Sorry about the delay on this post!

The car now runs BEAUTIFULLY. However, it wasn't just replacing the IACV that fixed it. I also ended up ordering the MAF sensor ($70) and putting a nice single piece short ram intake in place of the crappy plastic modular CAI (Spectre). Seems like maybe there were several problems, but in the end I'm come to the conclusion I will never use Spectre parts again.... except maybe those aluminum ones they make with the rubber clamps...

[paintbing]

UPDATE UPDATE UPDATE

Thought I'd give a shout out to another reason you get this code (#3 below)

3 things have been used to fix this....

1 - Cleaning the IACV
2 - Replacing the Neutral Switch
3 - Loosening your throttle cable from being too tight - ie piano string - hitting High 'C'.

We loosened the throttle cable as the plate wasn't 100% closed when in idle. The ecu couldn't prevent the high idle once it was warm and threw this code and gave it a cough/rough idle.

(#3 is why both I had this code pop up a year ago and the reason my friends did it today.)

Good luck!

[MDW25gt]

Where is the neutral switch located on a 99 Legacy?

[mountainbum]

For anyone still suffering from this issue, it turned out that my car had a torque chip installed by the previous owner and that was the source of the problem. Took it out and all was good again.

[STiGuy23]

im having the same issue in my 02 wrx. I just did a 6 speed swap and now i get all these random codes which were not comming before. i was getting a throttle position code almost everytime i ran the car, i wiggled the plug in the sensor and now thats good but its been replaced now with the p1507. ever since i took care of the tps issue, now every night on my way home from work exactly at the same spot i go over a small little hump in the hwy and as i come down it and let off the throttle it feels like my throttle cable broke, then it comes back to life????? also the other night i came off the exit ramp and was in third and i let off the gas to coast in 3rd for a bit and the code popped on and it had a terrible idle for a few seconds. idk now im gonna check out the iac. idk i dont think this is the issue cause i never had this problem before the 6 swap but im gonna check it out. also im gonna check the neutral switch - also this 6 speed i put in has like 10k on it which makes it hard to believe that this is the issue. idk anyone have any ideas?

[bangedlegacywagon97]

Having the same code P1507, happens on the same exact stretch of downhill road. Where is this neutral switch in a 97 Legacy can somebody get a pic?

My speedometer is also bouncing around all over the place and sometime just dies though i am doing highway speeds.

[POSBUTAWD]

The speedo needle on my 95 Legacy auto has been bouncing at parking lot speeds for 6 yrs/84k miles with no issues.

[bangedlegacywagon97]

Originally Posted by POSBUTAWD

The speedo needle on my 95 Legacy auto has been bouncing at parking lot speeds for 6 yrs/84k miles with no issues.

From what I have read so far this CEL code affects only the manual tranny vehicles.

[POSBUTAWD]

That's correct. My manual 99 is the one with the code. I just figured I'd mention that the bouncing needle probably has nothing to do with the code.

[jlugo05]

anymore updates?????????

[protomor]

Where is a good place to order this part? I found a "neutral safety switch" on rock auto but it's either $8 or $80. It doesn't make sense. What's the part number?

[paintbing]

You're better off going to the dealer to get it for $20 like the OP did.

[PCT]

I have a 5-speed 2002 Subaru Outback wagon with 150k on it. Periodically I'd stall when slowing down while downshifting. I would reliably get the CEL every time I'd downshift going downhill. My code reader showed P1507.

Based on this thread I replaced the neutral safety switch ($30) and that fixed the problem. The switch was pretty easy to install - basically unscrewing the old one from the transmission, disconnecting the electrical plug, then reverse with the new one. Once you're under the car it's a 20 minute job tops. Good luck.

LINK: http://www.porcupine73.com/endwrench...TroubSum04.pdf