areez Posted September 4, 2009 Share Posted September 4, 2009 Hi ! First i will say that my english isn't the best I have a problem with my subaru RX from 1988 with the EA82T engine in. When i'm driving now and when i puts down the accelerator pedal and the greenlight turns on for boosting and after like 1 sec the car drops in Rev and i'm close to hit my head in the windshield. It does like this all the time and only on hard accelerations and so on. What can be the problem ? and another question. At the passenger side there is a white jar with some vac lines to it can anyone take a pic there so i can see where everything goes ? Best Regards //Joakim Link to comment Share on other sites More sharing options...
glcoupeguy Posted September 5, 2009 Share Posted September 5, 2009 is it the stock turbo or did you put one in? ive heard nothing good about adding boost to that engine. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted September 5, 2009 Share Posted September 5, 2009 You are running out of fuel. Either because the boost is too high and the ECU is cutting it off or you have clogged fuel filter or something. Install a fuel pressure guage and watch what happens when you go WOT with it. You could also need new plugs and wires in a real bad way - I've seen turbo cars have ignition problems under boost due to improperly gapped plugs and poor leads. GD Link to comment Share on other sites More sharing options...
areez Posted September 5, 2009 Author Share Posted September 5, 2009 is it the stock turbo or did you put one in? ive heard nothing good about adding boost to that engine. the turbo is stock and everything should be stock. I have to check the vaclines again so i dont have any leaks or so but i cant find any. But one thing i really want is a pic of an engine compartment around the lines from turbo to the 2 things located on the passanger side right in front of the shockabsorber. and also the white yar with 2 vaclines to it if someone can take that ? I will check the fuelfilter tonight and all fuellines etc... Link to comment Share on other sites More sharing options...
tizzle Posted September 6, 2009 Share Posted September 6, 2009 Are you showing any trouble codes? Link to comment Share on other sites More sharing options...
presslab Posted September 7, 2009 Share Posted September 7, 2009 Sounds like fuel cut - the ECU is cutting fuel off because of an overboost situation. Actually the ECU doesn't know boost pressure but it guesses it by the MAF reading. Check your turbo wastegate and see if it's moving freely. It could be rusted shut. You should be able to apply pressure using a "MityVac" type hand pump and it will open up at around 7 PSI. The device in front of the shock is a Wastegate Duty Solenoid. It's not needed, here in the USA it basically does nothing because the ECU never uses it to increase the boost. In other countries it may increase the boost a bit. You can eliminate this device by plumbing the hose nipple right at the compressor output directly to the wastegate; the turbo will then just operate at the wastegate pressure. Link to comment Share on other sites More sharing options...
ausubaru92 Posted September 7, 2009 Share Posted September 7, 2009 If you are talking about the white vacuum canister between the strut tower and the windshield, it is to store a reserve of vacuum for the heater/air con controls. It should have a hose that goes from the intake manifold to the canister. a hose then goes from the canister into the cabin Link to comment Share on other sites More sharing options...
areez Posted October 2, 2009 Author Share Posted October 2, 2009 It goes vaclines almost everywhere in this car Nah but i have found one problem. I cant switch on my DIFF Lock. I think that is controlled by Vac too. But ill need either a schematics over the lines or some pics from that side of the engine. And also on the black yar that has some lines to it and is located by the right headlight. Someone that can take som pics of the areas around the turbo and the Vacuum storage yar and that black yar ? Link to comment Share on other sites More sharing options...
Quidam Posted October 3, 2009 Share Posted October 3, 2009 Link to comment Share on other sites More sharing options...
areez Posted October 4, 2009 Author Share Posted October 4, 2009 Thanks alot for these pics. Going to test the car with a vacuum tool to see if there is any leak. Must have the car working before the snow comes Link to comment Share on other sites More sharing options...
joostvdw Posted October 4, 2009 Share Posted October 4, 2009 The device in front of the shock is a Wastegate Duty Solenoid. It's not needed, here in the USA it basically does nothing because the ECU never uses it to increase the boost. In other countries it may increase the boost a bit. You can eliminate this device by plumbing the hose nipple right at the compressor output directly to the wastegate; the turbo will then just operate at the wastegate pressure. You've got it exactly the wrong way around In the US it uses the wastegate duty solenoid to increase the boost when you're up high in the mountains. Since we don't have mountains here, there's no use for a boost controller The wastegate is directly plumbed in the intake. Also testing the wastegate action can be done with a large syringe, this easily generates enough pressure to open the wastegate. Link to comment Share on other sites More sharing options...
presslab Posted October 6, 2009 Share Posted October 6, 2009 I have never seen boost above 7 PSI with the stock ECU, I think it was some "feature" that was never really used. Maybe it works at really high altitude, I have seen about 6000 ft with little effect. Interesting to note that EDM has no solenoid at all. I find it hard to believe that there are no mountains in Europe though. areez, I found this diagram, maybe it will help you: http://www.ultimatesubaru.org/forum/attachment.php?attachmentid=5894&d=1220592699 Link to comment Share on other sites More sharing options...
areez Posted October 13, 2009 Author Share Posted October 13, 2009 (edited) I have now checked the fuelfilter and all around that. It flows like it should. The pump is newly swaped. but the car still wont run good. Can an air-leak make it dip so mutch at boost. And its only at boost the car is braking. I really want to use the car now when the snow comes And one more question. How do i erase my errorcodes ? And how do i read them ? Edited October 13, 2009 by areez Link to comment Share on other sites More sharing options...
vagen Posted October 13, 2009 Share Posted October 13, 2009 check the connections on your plenum. if they come lose they will look fine till you hit boost then bleff no power till you get out of it. I found out this afternoon what that is like. I would hit 5 psi and suddenly no power. Opened the hood everything looked fine till I started wiggling things. so give that a look. Link to comment Share on other sites More sharing options...
areez Posted October 14, 2009 Author Share Posted October 14, 2009 check the connections on your plenum. if they come lose they will look fine till you hit boost then bleff no power till you get out of it. I found out this afternoon what that is like. I would hit 5 psi and suddenly no power. Opened the hood everything looked fine till I started wiggling things. so give that a look. Hmm, Plenum what part is that ? My english sucks. What connections was loose for you and were are they located ? Link to comment Share on other sites More sharing options...
vagen Posted October 14, 2009 Share Posted October 14, 2009 (edited) when you look at the engine it is the aluminum part that says turbo on it. On my car it was the connection at the turbo that was loose. Edited October 14, 2009 by vagen Link to comment Share on other sites More sharing options...
areez Posted October 17, 2009 Author Share Posted October 17, 2009 How about the memory of fault-codes ? I read it by connection the 2 green connectors and put the ignition on. But how do i erase the codes ? I think i have olde codes left in the memory. Link to comment Share on other sites More sharing options...
bshoke Posted October 19, 2009 Share Posted October 19, 2009 This should help with the codes. http://www.ultimatesubaru.org/forum/...ad.php?t=49918 Link to comment Share on other sites More sharing options...
areez Posted December 26, 2009 Author Share Posted December 26, 2009 I have tested the car a bit more now. changed all fuel because the other was old. It got a little better but it still stops at full throttle. When i boost over 0.5bar the car halts and runs fine when its stops boosting. One more trouble is that i can see on the boostgauge that it woobles a bit on boost. the boost is not smooth if you know what i mean. And the last problem i found. The water in the turbo sounds like its boiling. And its only in the turbo it sounds like its boiling. What can be the problems ? Link to comment Share on other sites More sharing options...
areez Posted December 29, 2009 Author Share Posted December 29, 2009 Anyone who knows what i should check next ? Link to comment Share on other sites More sharing options...
naru Posted December 29, 2009 Share Posted December 29, 2009 Confirm correct fuel pressure while boosting. Link to comment Share on other sites More sharing options...
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