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1999 Eclipse GST problem & codes - help

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husker3in4

Probationary Member
16
0
Jun 21, 2011
Omaha, Nebraska
Ive had my Eclipse since I bought it off the lot in 99. It ran flawlessly for years until 4 years or so ago. It is still completely stock, 183k miles on it. I don't race it, but I do like to enjoy its power and quickness when I need it.

The main problem is when I floor the gas pedal, the engine cuts out and sputters, like its trying to GO but its not getting enough fuel or air to really go. If I ease into the gas pedal, the accelerates nicely. So it only does it when I floor it. Ive changed wires & plugs to no avail.

Second problem: When its hot outside and my engine is warm, it idles high, like between 1500 rpm and 3000 rpm. If its hot outside, I can start the car in the morning run errands, like go to the store etc. When I get back in it and start it again after being in the store, it will then idle high for the rest of my errands. In the winter it idles perfect at all times, and it only happens in the summer after the engine is warm and it is shut off and started again.

Third problem: Once the engine is warm (no matter the outside temp), there is alot of white smoke that comes out the exhaust. I really only notice it when I'm idling (high idle or not). The smell is hard to describe but to me it smells mostly like a water vapor smell, not really sweet but
not a harsh smell for sure.

Fourth problem: Its a manual transmission, and here just recently the bottom gears (2, 4 and R) intermittently go out, like they just aren't there anymore when I try to drop the stick into them. I took it to a buddy of mine who has done some work my car in the past, he felt the linkage on the left side of the motor and said it felt fine. Then he sat in the drivers seat and just kept working the stick thru the gears until magically the stick would slide into the bottom gears again. Fixed, right? The problem is, it doesn't stay fixed. I can be driving 15 miles thru traffic and have the bottom gears disappear, then I will work the stick thru the gears at a stop light and get them back, then go out again a few miles down the road. Sometimes they are fine for a days driving but the next day its doing it again. What gives?

The first 3 problems I have had for 4 or so years, but I don't remember if one happened before the other or both happened at the same time. I can drive the car just fine, but its kind of a pain with the high idle and the bottom gears going out intermittently.

It would be nice if i could get the acceleration without sputtering when I floored it. That and the white smoke kinda worries me that there might be something else wrong with the engine.

After some research the consensus seems to say the sputtering when I floor it is a boost leak. When I called one of the few shops around that will do a boost leak and described my issue, he didn't think it was a leak but told me to check my codes, so here goes:

Codes:
P1105 - Fuel Pressure Solenoid. Just clean and/or replace? Could this be affecting any of the above problems?

P0446 - Evaporative Emission Control System Vent Control Valve Circuit. Just a gas cap maybe? Is this part of one of the above problems?

P0505 - IAC Malfunction. This seems pretty straight forward, and could be the direct cause of my high idle. but does it mean IAC valve or IAC motor? I replaced an IAC valve in an 01 Escape and it was 2 bolts and done. How hard are these to change out?

Sorry for the terribly long read, but I wanted to give as much info as possible. Im a bit of a noob when it comes to auto mechanics, I can do simple things and can follow instructions from a detailed youtube vid if need be. I don't have a bunch of cash to throw at a mechanic so Id rather try to do most of it myself if it isn't too hard. If it does need a boot leak test, Id have the shop do it for $70, is that a fair price?

Any help is MUCH appreciated!
 
First off I would check for boost leaks, second the smoke could be a bad turbo, valve seals, head gasket, ect.. dose the turbo have any shaft play? Check your coolant, is there any signs of coolant oil mix?
 
Im not sure how to check the turbo for shaft play. I dont see any sign of coolant/oil mix, the coolant looks pretty good.

Id have to take it to the shop for the boost leak test. Thanks for your help.
 
Unless the shop you take it to specializes in turbo cars, you won't be able to trust their results. You can make your own boost leak tester with hardware store parts. Just check out the How To articles in here.

While the intake is disconnected from the turbo, you can reach in with your fingers and check for movement of the turbine wheel. A little Front-to-back, or up-and-down movement is okay. Any in-and-out movement means a rebuild is necessary.

Leaking turbos cause many running issues, including the ones you described. Check the turbo first and you may find the root cause of many problems.
 
The IAC (Idle Air Control) is basically a computer controlled vacuum leak. It regulates this artificial leak bigger or smaller depending on engine needs (larger leak increases idle speed, small leak decreases). It matters most when the engine is first started or the A/C is turned on. This may well be the entire idle issue. It will also cause stumbling at times due to it sticking open. The excess of unmetered air will throw the fuel mixture off and it will run rich or lean depending on what the O2 sensors are telling the computer the air fuel ratio is. Mostly rich. The EVAP code sounds like a bad Charcoal Canister Vent Valve Solenoid. This is mounted next to the charcoal canister and is responsible for regulating the flow of fuel vapors from the charcoal canister to the Purge Valve Solenoid in the engine compartment. This system basically plumbs the pressurized fuel vapors from the gas tank back into the intake manifold to be burned instead of venting it to the atmosphere. Codes with this system generally don't cause driveability issues or engine damage. It's an emissions thingy. As for the fuel pressure solenoid, If this has a code, I would first check the vacuum hoses going to it to ensure there's no leaks (while you're at it, check EVERYTHING rubber that has pressure/vacuum in it, i.e.,boost leak test).... If there's no leaks, then just replace it and have the codes reset. See what pops back up...
 
I need to get my bottom gears working first, so I did some checking over the weekend. I removed the center console to look at the linkage under the gear shift. I was hoping to see something broken off, but it all looks fine.

Then I looked at the linkage near the transmission, it all looks ok too. There is some play with one of the cables near the transmissive, but I'm not sure if it is supposed to move in that direction or not. I will post some pics at the bottom of this post. Hopefully you can tell from the pics, see something I am missing because I'm not really sure what Im looking for anyway.

Just to recap, the car sat for a couple months, when I started driving it again, the bottom gears would work, then just go out randomly as I was driving down the road. At first, I could work the stick shift around while at a stop light and get the bottom gears back. That worked for a week or so, but for the past couple of weeks, the bottom gears wont come back at all. This is where I am now.

This first pic is under the stick shift. The right sided skinny pole (not sure what the proper name is) slides backward when I put it into 1st, 3rd, or 5th and that works fine. It slides forward when I put it into 2nd, 4th or reverse, and for some reason, it wont slide forward. I put arrows on the pic so you know what I'm talking about.

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It seems that something is blocking it from sliding forward, but I couldn't really see anything obvious in the linkage next to the transmission. I took a few pics (below) but its kinda hard to get a clean pic of it.

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Can any of you make heads or tails of this?
 
well I can tell you that P1105 does nothing and you can rule that out, I have this code, I just eat more fuel, checked the vacuum lines, they were good, need to test the unit :(
 
Well i think you might be do for a new clutch,check your clutch adjustment and make sure its set rite ,and your fluid.
 
Rubber bushings where the shift cable hooks onto the arms on the transmission look worn to me.
 
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