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Everything posted by Legacy777
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Welcome to the USMB. Is the car an automatic or manual transmission? When he starts the car up, and it runs badly, if he just lets the car still run, does it get better, or does it only get better if he turns it off and then back on again? Has he tried to drive it when it has been running badly? If so, any other symptoms the car exhibits?
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Welcome to the USMB. It sounds like you're on the right track in looking for the problems. Have you tried running the d-check mode, which is a more active diagnostic check on the ECU. Instructions are on my site. http://www.surrealmirage.com/subaru/engine.html Also, as for the fuel pressure, you will need to remove the fuel supply line and tee in a line to run to a gauge. At idle with the regulator vacuum line plugged in, pressure should be around 30 psi. With the vacuum line removed from the regulator, pressure should be around 40 psi. Also, if you haven't run across it yet, I'd suggest checking out http://www.bbs.legacycentral.org There's a lot of info on there regarding the first gen legacy.
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Seatbelts from 1995 and newer have a lifetime warranty and Subaru dealers should warranty them. The passenger belt on my 1997 Impreza was chaffed along the edges. I brought it in, the local dealership looked at it, and ordered a new belt. The dealerships won't just go up an replace the belt because you want them to. However if the belt is worn beyond "normal" wear and tear, like the chaffed edges, they should replace it.
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p0420
Legacy777 replied to jerryjer8's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
When you replaced the pressure tranducer, did you replace it with a Subaru OEM part, or one from a parts store? How many miles are on the car? If the mileage is high, it's possible the O2 sensor may not be working correctly, and once you fixed the EGR, the ECU picked up on this. However, as you mentioned, the EGR may also have some carbon build up that may be causing you issues. -
I would say that is related more to an engine management issue. When the engine is at idle and you floor it, there's a huge in-rush and demand for air in the engine. The ECU can't rely solely on the MAF sensor to let it know how much air is coming in. It also relies on the throttle sensor, and will adjust fuel enrichments accordingly to help the engine compensate. From my own experience with my aftermarket engine management system, the issue you are probably having is due to over-enrichment, and the engine is bogging out. I'm not sure if there's anything you can do about this. Subaru might be able to reflash the ECU if there's newer programming out there. One thing you can do to try and test this theory is to brake with your left foot, and depress the accelerator gradually with your right foot. Once engine RPMS have risen above idle, let off on the brake and continue depressing the accelerator.
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Yeah, I'd highly recommend replacing the coolant temp sensor. It is the two wire sensor. They're only about $20 new and may not throw a code. So if you have a spare and it seems to help, I'd probably suggest buying a new one as they can wear out and the response slows to where it can cause some of the odd issues you are having.
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Hmmm....How old is the ECU coolant temp sensor?
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ej22t
Legacy777 replied to garbage's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
The wrist pins have a different part # in the subaru parts catalog. -
Normal operating temp for these cars with stock fans are 190-203. ECU kicks fans on at 203 deg F and turns fans off at 190 deg F. The t-stat will keep the lower end of temp no less than around 180-181 deg F. If the t-stat was old, I would recommend replacing it. Also, these engines have a second 1-wire temp sensor that hooks up to the dash gauge. So maybe it's bad or the calibration is different. As for the high idle, on top of the throttle body, does it have a big needle valve screw? http://main.experiencetherave.com/subaru/images/TB/ If so, turn that in. I wouldn't mess with the set stop screws on the side of the throttle body. If at all possible, I'd recommend trying to get this scan tool to work so you can verify all the ECU parameters. Things like the ECU MT/AT ident pin and neutral switch can sometimes play into some of the oddities when doing swaps. http://bbs.legacycentral.org/viewtopic.php?t=16219
