Ok I searched around for over an hour and didnt find anything like my car is doing.


So the last couple days the car has had a hard time starting, and when it does start its real shakey. When I push on the gas it sputters and acts like it is gonna die. If I let it sit and idle on its own it will slowly idle fine and then I can drive it.

Well the other night it wouldnt start at all. It would crank but not start and I smelled gas real bad. It started the next morning, but it was real shakey again with no gas smell.

I changed the plugs and wires (NGK BKR7E and NGK wires) and it still starts shitty. I havent checked the coil, but I checked it a couple months ago.

Heres what I know:

I am not throwing any codes
Not overheating
No smoke out the exhaust
No coolant in the oil, that I can tell
O2 sensors replaced less than 6 months ago
I have new plugs and wires
Still running the EGR (no block off kit)

Info on the car:

99 eclipse with star stage 2
aem adjustable cam gears (zeroed out)
missing link
NGK BKR7E plugs
NGK oem wires
All stock fuel except the items that came with the star kit

Someone please help
-Todd

TPS, fuel filter clogged, fuel pump.

Originally posted by MitsuEclipseGS
I havent checked the coil,

I'd start there and see what you get.

Test or just replace the CTS( Coolant Temp. Sensor) and the IAT( Idle Air Control)

Well I replaced the fuel filter today and it still does it, so now on to the next thing.
-Todd

Well I replaced the IAC valve and it seems to be running good for tonight. So we'll see how the morning goes.
-Todd

Well after 2 weeks, it started running shitty again. Why would you say it might be the coolant temp sensor? Why would cause the car to run like this. Just want to know before I replace it.
-Todd

Originally posted by MitsuEclipseGS
Well after 2 weeks, it started running shitty again. Why would you say it might be the coolant temp sensor? Why would cause the car to run like this. Just want to know before I replace it. -Todd

I've been wondering the same :shrug

Ok on the way to work today at WOT and full spool my air fuel gauge is all the way in the lean. What could wrong with this car? I'm gonna buy a new car at the end of the week if I cant figure this out.
-Todd

Hook up a fuel pressure guage to the rail? Sounds like a pump issue.

Originally posted by MitsuEclipseGS
I'm gonna buy a new car at the end of the week if I cant figure this out. -Todd

lol at that part. but i guess we all say that at one point or another.

Originally posted by MitsuEclipseGS
Why would you say it might be the coolant temp sensor?

Todd, the ECU uses the CLT to determine the temperature of the engine. Based on what it sees, it adjusts the fuel trims. Commonly, when this sensor fails, it tells the ECU that the engine is -145* or something, so the engine is constantly trying to warm up. If you've got a logger, try viewing CLT value and see for yourself. Otherwise, just pop for the sensor. It's less than $30 and you can get them from Autozone.

Ok I have a new temp sensor I got from another member a while back, so I'll just use that.

Brian do you know anyone in az with the logger?

Oh and about the buying a new car, I am still going to most likely, but I will keep the eclipse. I'll never get rid of it.
-Todd

I was having really jacked up drivability issues/idling problems with my car. Apparently vatozone's "wells" brand electronic parts suck shit. I bought a TPS from them and I am guessing it was bad from the start, brand new. I recently purchased another TPS from NAPA... this one works like a fucking charm. The car is runing like it should, no screwed up idle, no stalling out on me, no bogging or hesitation at all. Autozone is no bueno.

I changed alot of stuff on the car too before I finally solved the problem. The next things to change if the new TPS didn't fix it are the O2 senser, and the MAP sensor.... along with the CPS and the CAS. That would be every sensor in the car. Thank goodness the car is fixed now.