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Old 05-10-2009, 10:55 PM   #1
roccotrapani
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Subaru Stars help my car won't start

I have a 95 impreza and I'm really getting frustrated. I'm spending all my money and wasting lots of my time. This car will not start and I have no idea why. It's a 1995 impreza 2.2l with an automatic trans. One day I got a check engine light... So I scanned it and got a couple misfire codes. So I started by replacing the plugs, wires, I changed the coil, new battery. And then I tuned it up air filter, oil filter, fuel filter, pcv. It was running better but not great and I still had a check engine light. This time misfiring all 4 cylinders. So I kept driving it hoping to find my problem and fix it for good.
Well one morning i'm going to leave for work and my Subaru let me down. Wouldn't start, just kept turning but wouldn't fire up. Scanned it again got a code for throttle position sensor. So $100 later new tps and still won't start. New batterey , full tank of gas and I'm getting spark. This car has never let me down even with the 150,000 plus miles but I can't get it to start. I'm lost I'm just about tapped out of money and like I said frustrated. Someone please help I going crazy.
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Old 05-10-2009, 11:20 PM   #2
watchunglava
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you have spark?

misfire code , then tps code. now no start .

i would say check the ecu but , your getting spark .

does the starter work? is it cranking?

does your fuel pump work? are you getting gas?
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Old 05-10-2009, 11:41 PM   #3
roccotrapani
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Oh yeah it's cranking I've got it to actually start once but I had to hold the throttle wide open . Once it started it was very hesitant until high rpm and then the engine would scream but barely idle.
I pulled a line and turned the ignition on and I got fuel . I really don't know but my next step is to take the timing belt cover off and take a look. I can take it to a shop which I should have done already but I'd rather try to fix it myself.
I appreciate your help than you
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Old 05-10-2009, 11:48 PM   #4
MDSubie05
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my next bet would check for signal at the CKP sensor or the CPS sensor. your getting spark so its nothing to do with the coils.
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Old 05-10-2009, 11:50 PM   #5
watchunglava
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Sounds like your super rich. For some reason. I will ponder it
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Old 05-11-2009, 12:03 AM   #6
ruckus racing
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worn out (stretched) timing belt. if all 4 are misfiring, then it should be a single problem thast effects all 4 cylinders. if its a 95, and has the orignal belt, then thats probably the problem. take off the cover and check for cracks accross the width of the belt, you'll probably find tons of them, deep
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Old 05-11-2009, 12:12 AM   #7
roccotrapani
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thanks guys for giving some direction I'm planning on checking the cam and crank sensors first and then that timing belt cover is coming off. Il see if I can get something done after work tomorrow . I really do appreciate all the help.
The original owner mentioned the timing belt was recently replaced so I guess I will find out. I forgot to mention that I did add a couple shots of starting fluid but it did absolutely nothing
Hey thanks a million
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Old 05-11-2009, 11:14 PM   #8
ballitch
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I would buy a new timing belt and make sure to use the NOTCHES not the ARROWS when you do it.

In the meantime, remove the crank and cam sensors, and clean them. It might be the coil pack also.


~Josh~
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Old 05-12-2009, 02:24 AM   #9
rivman05
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for a rich condition id lean toward leaky injectors...or bad fpr? maybe someone can chime in, but if you can verify that its ooober rich id lean towards injector o-rings or your fuel pressure reggy, did u change your fuel filter, do you hear ur fuel pump when u turn the key on before you start it? Just throwing out ideas.
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Old 05-12-2009, 11:28 AM   #10
Qman
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Check the ignitor. Easiest way to do it is by swapping a known good one in and starting. They do go out. Especially if they have been left on for extended periods of time.
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Old 05-12-2009, 02:11 PM   #11
WcW
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Diagnostic tree

1)Charge battery

2) Crank engine 10 seconds 100% throttle
(if the engine starts the issue is a sensor)

3) Crank engine briefly 3 times

4) Pull an easily reached plug (front)
A) Plug is wet: Problem is timing or ignition related. Check for spark at removed plug, check for compression on now open cylinder, check ignition timing to the crank marks.
B) Plug is dry: Problem fuel related.
a) check for fuel pressure and flow by removing the fuel return line (the one that runs from the engine to the firewall not the filter and has a hose clamp not a clip) plug the line and replace it with a longer hose that runs into a gas resistant container. Cycle the ignition, fuel should flow. no fuel means a blown fuse, bad pump, bad filter etc.
b) check the injector +12 by removing an injector connector and metering both connections. With the ignition on, one should show +12. to the battery ground if not check fuse/wiring.
c) check for injector cycle by having a friend crank the engine while you listen to the injectors through a piece of hose, no noise means a bad injector (yes they can all go bad at once) or a lack of signal from the ECU, check wiring harness at rear of engine, remove, clean terminals. check for injector cycling using test light, check for continuity (+12v) at the ECU pin with the ignition on. Replace ecu.

Do this diagnostic in the order described. Do not skip steps. Be careful, some of this involves the risk of fire, gasoline spray. Wear safety glasses and have an extinguisher handy. If you have any questions just ask.
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Old 05-12-2009, 02:12 PM   #12
roccotrapani
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I got home from work way too late last night . So I'm hoping to check some these things tonight. Thanks again for the help.
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Old 05-14-2009, 06:37 PM   #13
roccotrapani
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wow when will I find some time. Hopefully this weekend
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Old 09-24-2009, 07:30 PM   #14
roccotrapani
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Finally figured it out. Got around to pulling the timing belt cover off and the crankshaft pulley for the timing belt was loose. So further inspection and I found the keyway to be broken .
I'm going to attempt to fix this without pulling the engine apart. I guess i'm finally going to get to use my new welder.
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Old 09-24-2009, 07:41 PM   #15
watchunglava
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i have a brand new crankshaft pulley key sitting here if you want to buy it.
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Old 09-25-2009, 07:37 PM   #16
Charlie-III
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The keyway is broken (not likely) or the key is broken (most likely)?

Give us a shout, we can give the dimensions of the key and you can either get it from thw dealer or McMasterCarr which is an industrial vendor.
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