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bought a used 96 subaru legacy outback 300000 miles. when i bought it i noticed that when i turn the key to start i would hear a buzz from a relay under the dash, i would have to turn the key 2-3 more times before the car turned over. somedays it starts right up. i found the relay (starter relay) and replaced it. still does it. later i replaced the stereo and unhooked the battery to do so, and the keyless entry unit started making weird clicking sounds. not knowing it was also the anti-thief unti i just unplugged it and went on my way. same starting issue. after work the other day, i got in and tried to start the car and nothing. over and over again no crack. checked power at relay, replaced starter same thing. battery is good, finally found online to take the power lock fuse out after resetting the keyless entry unit and it started. ran it like that for a few days. now it wont start at all. the check engine light has been on since ive owned it. code say P0135 (O2 sensor) P0304 (cylinder 4 missfire) P0507 (idle air control) 

 

and ABS light is on.

 

today after work i got in it and it will not start. we've tried everything. 

 

Need help!

 

(im new to forums so please be easy one me veterans) ask any question.

 

thanks 

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Well the first thing to catch my eye is the IAC code.  If the IAC valve isn't operating correctly it can cause a no-start situation.  Have you tried unplugging it?  (may not help if it's stuck in the wrong position).

hmm. never crossed my mind to check it. i will check first thing in morning and update. thanks

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Well, actually he didn't.  He keeps going from "no start" to "won't crank".  I've seen both and he brought up codes.  

 

An IAC won't cause a "no crank" issue, but it will cause a "no start" issue where it will crank but not start.

 

But, this could also be a bad ground, specifically one of the engine grounds.

Edited by lstevens76
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The buzz I was referring too was the starter relay. I replaced that. Now when u turn the key nothing happens. All dash lights turn on before one click from starting regular. But when I go to start nothing. Checked contacts on ignition and power is getting through.

 

Ps, sorry I don't know the difference between no start and no crank ????

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Not knowing the difference isn't a big deal. :)  A no start is where the car doesn't fire up and run.  A no crank is where the car doesn't even turn over. :)

 

If it's not cranking and your getting power to the starter then it's either solenoid or the starter.  I would try pounding on the starter solenoid and see if it starts.

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I suggest you purchase a test light probe if you don't have one already so you can verify where power is getting to. They don't cost much and having one will save you a lot of time in trying to find the trouble.

 

As was already stated you need to make sure voltage is getting past the safety switch near the clutch pedal when you depress the pedal. Power from the ignition switch START position passes through that switch and on to the starter solenoid that is located on the starter motor. Either the safety switch is open when it should be closed or no voltage is getting to it from the ignition switch.

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Hey guys I really appreciate all the suggestions and all the help. After running through most of these. We finally dialed it down to the ignition. How I came across this was by turning the key all the way as if to crank the motor over, when nothing happened I just held it in that position and started wiggling the key in the ignition and presto. It starts every time. There is a worn out contact in the switch itself. Pretty simple fix.

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