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  #1  
Old 12-29-2005, 12:37 AM
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Angry cutting out

Ok, It would appear I am the newest victim of the weird cutting out thing I've read of some of our SVX's. It started on christmas after I put in a new driver side halfshaft and welded up some leaks on the exhaust and has gotten worse today. It stalled like 5 times today while either slowing to a stop or sitting idling and when accelerating it cuts out and completely dies it seems until I let off the pedal and hit it again then it's just fine. On one occasion today it put up a fight to start running again after cutting out while accelerating. After a full stall, It fires up and runs just perfect again. I also did a full throttle run done the road and it was randomly missing a cylinder it seemed, But after letting off and hitting it again it accelerated fine. So are there any answers to this mysterious problem yet? BTW, The only codes in the computer are 32 and 37 and it's been throwing those codes for months now. I had both sensors replaced a year ago. HELP!
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Old 12-29-2005, 01:33 AM
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Have you checked the fuel filter or air filter.
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  #3  
Old 12-29-2005, 01:37 AM
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Quote:
Originally Posted by ensteele
Have you checked the fuel filter or air filter.
Haven't checked the fuel filter yet. I have K&N air filter and I just cleaned and reoiled it not long ago. I'll have to try to get a fuel pressure gauge.
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  #4  
Old 12-29-2005, 05:04 AM
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Jason,
Sorry to hear you're having this problem. As you know I've been fighting this for months. I might have it fixed. Only time will tell. Replacing the MAF seemed to do it. I bought one from a member of this sight for about 60 bucks. New ones are over 300 now. I had tried cleaning my old one and it had no effect.

No stalls in about 3 weeks.
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  #5  
Old 12-29-2005, 08:41 AM
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Quote:
Originally Posted by budfreak1
... I have K&N air filter and I just cleaned and reoiled it not long ago...
I'm guessing that the oil from the K&N air filter crapped up your MAF. This is a common problem with oil-type air filters and MAFs. Try cleaning the MAF with some electronics-grade solvent (CRC QD Electronic Parts Cleaner).
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Old 12-29-2005, 09:43 AM
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Yeah I stopped using the K&N....i just use a regular filter. Would the STi panel filter be the same as a K&N?
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  #7  
Old 12-29-2005, 10:54 AM
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I have seen the panel filters and they are paper ones without oil. I know that they also have the panel ones with oil, so as long as they don't use oil, I think it would be safe.
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  #8  
Old 12-29-2005, 11:24 AM
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If a filter is meant to be oiled, then it should be oiled. The oil is a key component to trapping the dust/dirt particles with those kinds of filters. Its just that those filters can cause problems with MAF sensors, so they aren't the best thing for an EG33 motor.
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  #9  
Old 12-29-2005, 06:59 PM
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I've never had any problems with a K&N messing with my MAF. I've cleaned the MAF 3 or 4 times before, But I think I'll try it once more. If that don't do it then I'll try to find a way to get my hands on another sensor to try out. I can't afford to just buy one right now with the current off work on disability thing. Keep me informed Billb on how it's going. any other suggestions? anyone have specs for testing the MAF and directions?
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Old 12-29-2005, 09:45 PM
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Quote:
Originally Posted by mbtoloczko
If a filter is meant to be oiled, then it should be oiled. The oil is a key component to trapping the dust/dirt particles with those kinds of filters. Its just that those filters can cause problems with MAF sensors, so they aren't the best thing for an EG33 motor.

To repeat myself from the post of a few weeks back, I had identical drivability problems.
The car came with a K & N filter when I bought it almost 5 years, & 60K miles ago. I cleaned & re-oiled the filter 18 months ago - no problems.
Replaced the original MAF sensor with an Impreza unit two weeks ago. The car ran fine. I decided to clean the K & N filter again since I had the hood open.
Car ran fine for a day. Then decided to try the original MAF again after the vinegar bath process. SVX now "loses" two cylinders & blows blue smoke. Impreza MAF re-installed & all's fine. I'd say MAF kaput.
Now if an oiled filter leads to long term disintegration of Mr. MAF sensor, I'd like to know, since I'll be installing a used SVX MAF next week.

Ron.
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  #11  
Old 12-30-2005, 01:00 AM
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Quote:
Originally Posted by Ron Mummert
To repeat myself from the post of a few weeks back, I had identical drivability problems.
The car came with a K & N filter when I bought it almost 5 years, & 60K miles ago. I cleaned & re-oiled the filter 18 months ago - no problems.
Replaced the original MAF sensor with an Impreza unit two weeks ago. The car ran fine. I decided to clean the K & N filter again since I had the hood open.
Car ran fine for a day. Then decided to try the original MAF again after the vinegar bath process. SVX now "loses" two cylinders & blows blue smoke. Impreza MAF re-installed & all's fine. I'd say MAF kaput.
Now if an oiled filter leads to long term disintegration of Mr. MAF sensor, I'd like to know, since I'll be installing a used SVX MAF next week.

Ron.
My situation is different. My motor completely shuts off like the ignition or fuel pump just dies. I don't notice it doing it while cruising, but while accelerating it will completely just cut out for a second and then go again. When idling it will just shut off. I've had it stumble and shut off and I've had it just shut right off. It seems electrical cause I can kind of make it do it when idling by flipping my headlights on sometimes. It's not a constant thing, as I just drove it a little while ago and it was perfectly fine. I have no smoking at all. I do still feel it's probally the MAF though from past experience. I'll clean it tomorrow and see how it goes. If anyone else has some ideas, post them up.
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Old 12-30-2005, 05:09 AM
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Jason,
Definitely try cleaning the MAF. I did the vinegar bath on my old one but I never reinstalled it. After reading Ron's post on his bad experience, I was afraid to try it. The car was running good with the replacement sensor, so why mess with it.

I'm a little hesitant to say that my stalling problem is fixed even though it hasn't stalled in 3 weeks. I always had a theory that the car ran better when it was cold. I will certainly let you know how it goes.
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  #13  
Old 12-30-2005, 10:12 AM
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Vinegar is basically a dilute solution of acetic acid in water. Oils are not necessarily soluble in acid solutions. For instance, the oil in italian dressing isn't soluble in the vinegar in the italian dressing. I'd be more tempted to use a solvent rated for electronics rather than an acid solution.
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Old 12-30-2005, 11:27 AM
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Quote:
Originally Posted by budfreak1
My situation is different. My motor completely shuts off like the ignition or fuel pump just dies. I don't notice it doing it while cruising, but while accelerating it will completely just cut out for a second and then go again. When idling it will just shut off. I've had it stumble and shut off and I've had it just shut right off. It seems electrical cause I can kind of make it do it when idling by flipping my headlights on sometimes. It's not a constant thing, as I just drove it a little while ago and it was perfectly fine. I have no smoking at all. I do still feel it's probally the MAF though from past experience. I'll clean it tomorrow and see how it goes. If anyone else has some ideas, post them up.
You might want to check over your wiring harness to make sure you don't have a cracked wire that is shorting out due to vibration. I'd sugggest you start with the harness over to the alternator and then move back to the fuse box and then to the ECU. You might also want to check all of your ground wires to make sure they're actually providing a constant ground.
-Bill
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Old 12-31-2005, 12:25 AM
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Quote:
Originally Posted by SVXRide
You might want to check over your wiring harness to make sure you don't have a cracked wire that is shorting out due to vibration. I'd sugggest you start with the harness over to the alternator and then move back to the fuse box and then to the ECU. You might also want to check all of your ground wires to make sure they're actually providing a constant ground.
-Bill
I'm gonna check that out too. They only thing I've found so far is a broken ground strap on my muffler. I'm not sure it would be that kind of an electrical problem though since you'd figure bumps would make it happen too, and they don't. Just accelerating and idling. It almost didn't want to start at one point tonight. I'd start it and it would catch for a second and then just stumble all over itself and die. It took like 3-4 times to get it to run. It really does feel like running out of gas when it cuts out while accelerating. it did it alot for a while today. I'll get the cleaner either tomorrow or sunday. It's up to the weather.
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