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Not Really A Eclipse Question

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Bohman731 View Member Profile	Apr 15 2009, 01:00 AM Post #1
Senior Group: Members Posts: 671 Joined: 9-October 07 Member No.: 46,261 Status: Location: Utah Drives: **1995 Mitsubishi Eclipse GS 420a turbo ** The DSM Prayer Our DSM's, who art in the driveway, hallowed be thy name. Thy speed has come, thy will never be done, on the road as it is on the mind. Give us this day, our daily beauty, and forgive us our speeding, as we forgive those who drive slow. Lead us not into incarceration, but deliver us from the Five-0. Amen	ok this isnt a eclipse question but it has to do with turbo problems so i thought i would go here. My buddie has a 03 Evo8. he has been having some boost issues and we cant figure it out. when he got the car he was boosting at about 15 psi on the stock turbo. it has full exhaust, greddy bov, and a ebay boost controller. the boost controller has always been screwy like he would turn it in the direction to turn it up and his boost would drop and he would turn it in the direction to turn it down and his boost would raise. so it was like reversed. well he started to notice over a few weeks that his psi on was dropping slowly every day and he is at 5 psi now and it wont go up or down no matter what he does to the boost controller. now the guy before him abused the shit out of it and he has had to fix alot of problems on this car. now i dont know a ton about turbo problems but i told him to check a few things. he checked for shaft play and he says there is about a milimeter of shaft play just a tiny bit. we took off the boost controller so it was just running off the wastegate and the boost numbers didnt change. he has ordered a new boost controller cause he thought it was faulty and he installed it and nothing changed. he checked for loose connections on his intercooler and everything seems tight. could this be a vaccum issue? im pretty lost and im just trying to help him out. if you guys could put up some suggestions that would be great. Thanks

onesickgst32 View Member Profile	Apr 15 2009, 01:27 AM Post #2
Full Member Group: Members Posts: 93 Joined: 12-June 08 Member No.: 59,369 Status: Location: Chattanooga, TN Drives: 1999 Eclipse GS-T, 1992 Dodge Stealth ES, 1972 Honda CB450 cafe racer, 1984 Nissan Hardbody, 1988 Kawasaki Vulcan 750	i dont know much about evolutions but..when you guys put back on the original hoses was there by chance a wastgate soelnoid? bc those lines are what a boost controller is installed, atleast it is on an eclipse turbo. i was actully messing with this today. but you said you guys changed that out and also put on a new controller so im not sure. bad sensor? and it could quite possibly be a vaccum problem so i would check any and all vaccum lines.

TrevorS View Member Profile	Apr 15 2009, 01:14 PM Post #3
Veteran Group: Members Posts: 1,361 Joined: 29-March 08 Member No.: 55,160 Status: Location: Delaware USA Drives: 1990 Eclipse GSX, 2008 Scion xB	QUOTE (Bohman731 @ Apr 15 2009, 02:00 AM) well he started to notice over a few weeks that his psi on was dropping slowly every day and he is at 5 psi now and it wont go up or down no matter what he does to the boost controller. now the guy before him abused the shit out of it and he has had to fix alot of problems on this car. now i dont know a ton about turbo problems but i told him to check a few things. he checked for shaft play and he says there is about a milimeter of shaft play just a tiny bit. we took off the boost controller so it was just running off the wastegate and the boost numbers didnt change. My guess is a boost leak for which you'll have to pressurize the system and look for leaks. If a leak is limiting it to 5psi, it's possible the MBC is unable to regulate that low and so it has no affect. If there's no leak, then I'd say the turbo is in trouble.

onesickgst32 View Member Profile	Apr 15 2009, 01:43 PM Post #4
Full Member Group: Members Posts: 93 Joined: 12-June 08 Member No.: 59,369 Status: Location: Chattanooga, TN Drives: 1999 Eclipse GS-T, 1992 Dodge Stealth ES, 1972 Honda CB450 cafe racer, 1984 Nissan Hardbody, 1988 Kawasaki Vulcan 750	QUOTE (TrevorS @ Apr 15 2009, 02:14 PM) My guess is a boost leak for which you'll have to pressurize the system and look for leaks. hes more than likely right. id do this. is there a high pitch whining noise when the car is under full bosst? that can be a sign of a leak

pwee05 View Member Profile	Apr 16 2009, 09:35 AM Post #5
Bleeds black and gold Group: Super Mod Posts: 7,433 Joined: 2-January 06 Member No.: 19,248 Status: Location: Lancaster, PA Drives: 1996 Talon AWD. Built, but no longer drives: 1997 mitsubishi eclipse RS; 1990 Talon AWD; 1995 Talon AWD, 1997 Talon AWD. Seems like a pattern	after checking for a leak check the wastegate actuator. It could be bad and opening too quickly

Spyderboy97 View Member Profile	Apr 20 2009, 11:36 AM Post #6
Full Member Group: Members Posts: 151 Joined: 11-June 08 Member No.: 59,340 Status: Location: PR Drives: 1997 Spyder GS-T	QUOTE (pwee05 @ Apr 16 2009, 10:35 AM) after checking for a leak check the wastegate actuator. It could be bad and opening too quickly It could be the wastegate, is that stock too?

Bohman731 View Member Profile	Apr 20 2009, 12:21 PM Post #7
Senior Group: Members Posts: 671 Joined: 9-October 07 Member No.: 46,261 Status: Location: Utah Drives: **1995 Mitsubishi Eclipse GS 420a turbo ** The DSM Prayer Our DSM's, who art in the driveway, hallowed be thy name. Thy speed has come, thy will never be done, on the road as it is on the mind. Give us this day, our daily beauty, and forgive us our speeding, as we forgive those who drive slow. Lead us not into incarceration, but deliver us from the Five-0. Amen	yeah the wastegate is just the stock internal one. he has been pretty busy so we havent had time to check anything but this week we should be able to look at it

Spyderboy97 View Member Profile	Apr 21 2009, 01:28 PM Post #8
Full Member Group: Members Posts: 151 Joined: 11-June 08 Member No.: 59,340 Status: Location: PR Drives: 1997 Spyder GS-T	just check that part as a starting point, and then we go from there... QUOTE (Bohman731 @ Apr 20 2009, 01:21 PM) yeah the wastegate is just the stock internal one. he has been pretty busy so we havent had time to check anything but this week we should be able to look at it

Bohman731 View Member Profile	May 15 2009, 04:31 PM Post #9
Senior Group: Members Posts: 671 Joined: 9-October 07 Member No.: 46,261 Status: Location: Utah Drives: **1995 Mitsubishi Eclipse GS 420a turbo ** The DSM Prayer Our DSM's, who art in the driveway, hallowed be thy name. Thy speed has come, thy will never be done, on the road as it is on the mind. Give us this day, our daily beauty, and forgive us our speeding, as we forgive those who drive slow. Lead us not into incarceration, but deliver us from the Five-0. Amen	QUOTE (Spyderboy97 @ Apr 21 2009, 02:28 PM) just check that part as a starting point, and then we go from there... ok so he got a turbo for a steal and we installed it and not a thing changed. so im thinking a boost leak but we havent found anything yet. what could it be besides a boost leak? or is that pretty much it? when we took the old turbo off the hot side was all white on the blades so it looks like it was running pretty lean. could that have any effect on it? we also cleaned out he MAF sensor and no change there.

Bohman731 View Member Profile	May 16 2009, 11:07 AM Post #10
Senior Group: Members Posts: 671 Joined: 9-October 07 Member No.: 46,261 Status: Location: Utah Drives: **1995 Mitsubishi Eclipse GS 420a turbo ** The DSM Prayer Our DSM's, who art in the driveway, hallowed be thy name. Thy speed has come, thy will never be done, on the road as it is on the mind. Give us this day, our daily beauty, and forgive us our speeding, as we forgive those who drive slow. Lead us not into incarceration, but deliver us from the Five-0. Amen	well i made a boost leak tester and we found out his greddy bov was leaking like crazy so we just put the stock one back on for now and there was a big leak at the throttle body/ intake manifold. we couldnt find exactly where it was but the little black half moon shaped thing that the throttle cable connects too that controls the butterfly valve thing you could wiggle a tiny tiny bit and it would change the pitch of the leak. but i still feel like there is a bigger leak somewhere. where else in that area could be leaking

Bohman731 View Member Profile	May 17 2009, 06:06 PM Post #11
Senior Group: Members Posts: 671 Joined: 9-October 07 Member No.: 46,261 Status: Location: Utah Drives: **1995 Mitsubishi Eclipse GS 420a turbo ** The DSM Prayer Our DSM's, who art in the driveway, hallowed be thy name. Thy speed has come, thy will never be done, on the road as it is on the mind. Give us this day, our daily beauty, and forgive us our speeding, as we forgive those who drive slow. Lead us not into incarceration, but deliver us from the Five-0. Amen	bump

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