I really need help!!!! Please!!!

[Wesley98eclipse]

I just got a 94 eclipse gst. It will start but has a hard time doing it and won't idle unless I feather or hold the gas, and I once I let go it just falls to about 400 Rpms and tries to live but dies, the guy I bought it from said it needs a coil pack knock sensor and oil return line. I replaced the first two and nothing! It didn't change how it ran at all, I've checked pretty much all the sensors for voltage and they were all within spec, one thing that is weird about the car is it won't let me rev above about 2500 Rpms PLEASE HELP! I need this to be my DD! I think it might be the MAS but im not sure

It had a full 3" exhaust with no cat, 2 1/2" downpipe, and an aem fuel rail all from the previous owner, we can't figure out anything to help.

 

[motozachl]

Boost leak, check all your couplers and pressure-ise the system while listening for air leaks.

You should also not run that car without an oil return line...ruin the turbo quickly

 

[dsmtnr]

is the check engine light on? I'd would definately do a boost leak first, change the plugs also. Never hurts and its cheap and easy.

 

[Wesley98eclipse]

I did change the plugs and they're gapped to .032, and Im not really sure how to do a boost leak test, I also don't drive the car either it's just sitting in my driveway but I do let it run, the return line should be here in the next few days, and also yea the engine light is on but I have no way of checking it since it will not drive

 

[GsxMan98]

http://www.dsmtuners.com/forums/art...-boost-leak-test-how-boostpro-net-tester.html
Thats some good info on how to do a blt. good luck

 

[skatershawn]

As you're a Newbie to the site, i will tell you, searching is a most before asking a question thats been ask plenty of times before!
BUT because Im nice and its was seriously a 5 second search i've provided you with a link to help you with doing a boost leak test!
Good luck!

http://www.dsmtuners.com/forums/art...-boost-leak-test-how-boostpro-net-tester.html

Oh and another thing, whether you drive it or not, i would NOT turn you engine on without a return line on the turbo!
I'm just assuming the current one is old and needing to be replaced, and that its not just plugged up(because that would be a big NO NO)!!

EDIT:
DAMNIT... thought i had it first!
ALL BECAUSE I wanted to write a damn story, like always!!
haha

 

[Tyeler18]

This same problem came up last week, ended up being the ecu for multiple people. The 2500 rpm limit gives it away to me that you're ecu probably has leaking capacitors. At least that was the other couple of people's problem.

To check the MAF just unplug it while the car is running and see what it does.

 

[95TalonOwner]

Boost leak test before trying or buying anything else.

 

[Wesley98eclipse]

I will be boost leak testing soon, and I did search for hours and tried plenty of things I could do to fix this the only things I have left are boost leak test, ecu, Maybe the timing off a little, and FPR





EDIT: I unplugged my MAF and it didnt die on me for a while actually had good idle, but about 1 minute later it died again.