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Old 11-03-2002, 02:39 PM   #1
wcbjr
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Default Link fine yesterday, but not today

Need help, car won't start.

Yesterday I went to pick up a laptop so I can start tuning the Link. I drive home for the evening and park the car out front. I come out this morning, plug in the Link, don't touch a thing, and try to start the car. Nope. The engine is completely missing now. It feels like it's going to come out of the car. I tried reloading the pcl file from the ecu and the car will barely start and still feels like it's missing. I tried the good map again and the car still won't start.

What could have happened? The weather conditions are the same and I felt nothing wrong with the car last night. I see no leaks of any kind. I have fuel pressure at around 32psi. All the hoses are connected. I don't get it.

Should I plug the factory ECU in and see if it will start? Would the 440 injectors mess anything up too bad?
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Old 11-03-2002, 03:04 PM   #2
Chav
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That is very weird. Don't suppose any wirring came loose?

You've probably already done this, but just to make sure. Check the vacumm line to the link plus at the engine and at the ecu. Check the plugs at the ecu and check your wirring. Check the injector wirring. Make sure that the injectors are properly hooked to the fuel rail and they are seated in the intake manifold properly. Check for vaccum leaks. Check spark plugs.

If that looks good then you can try and plug the stock ecu in, but i don't know how it is going to do with the 440s on there.

-Chav
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Old 11-03-2002, 03:19 PM   #3
wcbjr
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I hate the Link software. That sums it up. I can't get the PCLink software to save any of my changes. I'm not even trying to save the changes to the ecu itself, I just want to save the changes in the pcl file. It can't even do that. Every time I change something, like crank enrich, save it to the pcl file on the hard drive and reopen it, the change is gone. This is without even hooking the computer to the ecu. What is going on here?
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Old 11-03-2002, 03:21 PM   #4
Chav
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Have you tried the latest software and an older version?

-Chav
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Old 11-03-2002, 03:22 PM   #5
wcbjr
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I am trying to look at the files on the filesystem in Windows and one pcl file is 11k and the other is 22k. What are the file sizes supposed to be?
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Old 11-03-2002, 03:22 PM   #6
wcbjr
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I just dl'ed the software from AMR's site yesterday. That is what I am using right now. But I didn't even use it when I tried to start the car this morning.
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Old 11-03-2002, 03:37 PM   #7
Chav
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My pcl file is 12kb. Do you want an older version of the software to try?

-Chav
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Old 11-03-2002, 04:00 PM   #8
wcbjr
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Yeah, where can I get some older versions?

Back to the other problem. The weather has been the same, rainy. I popped the hood one more time to start taking out the plugs and I noticed a lot of water around the engine. I then proceeded to pickup a rainsoaked filter that is located under the passenger side hood vent. I am pretty sure the car was not starting because it was also pulling in a buttload of water. How do I need to go about fixing this? Besides putting the plate back on the vent...
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Old 11-03-2002, 04:10 PM   #9
Chav
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As long as the filter wasnt submerged or anything you should just be able to dry the filter out a bit and everything will be fine.

I thought I had some older versions on my computer, but I cant find them. Sorry.

Will the car idle with the default map? If it does you can track the missing cyl. by pulling injector plugs. When the idle changes you have a good cyl. if you pull the injector plug and the car's idle doesnt change then you've found your bad cyl.

Before you do any of that try to get the car to idle and see if it will rev freely. This is a very unusal problem and I'm sure there is some simple reason why this is happening. It isn't like you changed anything on the car (it was working fine before). Worst comes to worst you can get a new Link plus under warranty.

Just be careful. Make sure there isn't any fuel leaking and the engine is still in good shape. I don't want you to try and crank the thing if there is a hole in the fuel line or some thing is wrong with the engine.

-Chav
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Old 11-03-2002, 04:54 PM   #10
ScoobieSnaX
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Check your MAP limit. Mine did the same thing when I first got it. For some reason it set my map limit to 5Kpa! The car wouldn't start at all.

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Old 11-03-2002, 05:07 PM   #11
wcbjr
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I pulled the plugs and they are completely black. I am cleaning them right now, I'll keep you updated. As to why everything went wrong just this morning, I have no idea.
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Old 11-03-2002, 06:10 PM   #12
milkman
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Default did you get it running?

Just to make sure, Your car ran then you hooked up your laptop and it didn't?

Double check all your configuration settings, take a close look at coil single& duel.

When you hooked up the laptop did you down load to or from the link?
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Old 11-03-2002, 07:26 PM   #13
wcbjr
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I downloaded from the Link.

But, I just plugged in the stock ecu and it started first time. Granted it threw out a lot of fuel, but it ran ok.

Where can I get the past versions of the Link software?
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Old 11-04-2002, 03:17 AM   #14
Midwayman
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You in a cold enough area to freeze? ITs possible for the vacuum line to the link to get a little water frozen in it and block the line. (can happen with any ecu that uses an internal map sensor)

I havent upgraded my desktop software yet, so I can get you that if you end up needing it.
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Old 11-04-2002, 10:15 AM   #15
wcbjr
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pm'ed you Midwayman
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Old 11-04-2002, 05:06 PM   #16
Graham
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Sorry to hear about this Charlie. Have you started the car since the problem, or are you still back to the stock ECU?

I didn't think the stock ECU would drive those injectors you have, interesting.


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Old 11-04-2002, 05:09 PM   #17
wcbjr
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The stock ecu will drive the injectors, but spit out about 40% more fuel. I can't rev up past 4000 or the ecu will freak out (boost). It's ok enough to drive to the exhaust shop a couple miles away without fouling anything up.
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Old 11-04-2002, 07:10 PM   #18
mynew02
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Your posts are raising more questions than they are answering.

I don't think a vacuum line or plugs would cause the car not to start, but rather to just run poorly. I don't know much about your car, does it use direct ignition or a cap/rotor? Could your spark system have gotten wet?

I would reset the Link to it's stock map. Why are you going to the exhaust shop?

The difference in .pcl file sizes are usually due only to notes that you have made in the file.

-Jonathan
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Old 11-04-2002, 08:33 PM   #19
Chav
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Quote:
Your posts are raising more questions than they are answering.
Vaccum line would cause a problem since the Link Plus has a built in map sensor that needs a vaccum source to decide how much fuel to dump into the engine.

Ignition system is out cause the stock ecu works fine.

wcbjr, I think it maybe time to call the person you bought the link from and find out if you can warranty it. Or better yet find someone that you know that has a link and will swap with you.

-Chav
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Old 11-04-2002, 11:39 PM   #20
wcbjr
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Ok, this is a bit odd. I tried various things to get a map in the Link that would work. I dl'ed from, dl'ed to, reset the thing, the works. No go.

Then I sat there and looked over all the settings again for the map I knew was good. I got the map from Imprezha and it was the one I tuned with on the dyno. Lo and behold I spot that the Link is setup to run a dual coil ignition. I change it to single coil and the car starts right up.

I then go out and proceed to get some datalogging done. Next, I come back home, turn off the laptop, and then turn off the car. I sit for a few seconds and try to start the car again. No go, same problem as before.

What the heck is going on here?!

edit: i just looked at the Link again and it still says single coil but it's not starting.

Last edited by wcbjr; 11-04-2002 at 11:54 PM.
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Old 11-05-2002, 01:21 AM   #21
mynew02
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Ok.. you not only need to make the change to the map but then STORE the change. Make sure when you download your map you store it or it will go back to the previous state it was in before loading it up.

-Jonathan
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Old 11-05-2002, 01:36 AM   #22
Midwayman
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Well the my01 impreza you have is a dual coil setup. IE wasted spark.
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Old 11-05-2002, 03:05 AM   #23
Chav
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Yup, you want dual coil.


-Chav
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Old 11-05-2002, 03:13 PM   #24
Graham
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Chav and Midwayman, are both your cars starting on dual coil?

Charlie, did you store the map?


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Old 11-05-2002, 03:49 PM   #25
wcbjr
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Graham, I did everything but throw it in the kitchen sink. And why would it work with single coil if it's supposed to be dual?
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