General & Turbo Help

[cashbrook27]

I've been out of TR's for about 7 years, car has been sitting in storage (started intermittently and ran)...but have it out and about now.  Started right up and runs strong.  Now, I'm looking to continue where I left off.  The mod's are as follows:




Walbro 340 & Hotwire
[/size]Accufab AFPR
[/size]Motoron 60# injectors
[/size]RJC Power Plate
[/size]Turbo Tweak Chip
[/size]PTS Killer Street Transmission
[/size]PTS TC 2650 Stall
[/size]Pete Tomka Cold Air Intake
[/size]LS1 MAF
[/size]Translator +
[/size]ATR Headers
[/size]ATR Downpipe
[/size]2 1/4 Dual Exhaust (Don't know type)


When I bought the car, I thought the turbo was stock (just a noob), however in looking at the housing it's a Garrett.  The name plate is not on it which is making it difficult to identify the exact type.  Any suggestions on how to do so easily without disassembling everything and taking measurements?  I'm guessing a TE 44 or TA 49?  It's important as the current TT chip was created for a stock turbo (stock intercooler)...but I'm planning on getting a new chip anyways after ordering Alky.


When driving the car, there's also a code 42 gremlin that's causing me some headaches.  It's intermittent in that it only occurs when I drive over a rough patch of road...on the highway it's fine.  I've tried to go through Steve Woods troubleshootin g, but don't have all the tools at this time (stuck at the test light).  Current plan is to take the ignition module to Autozone to see if it's still good.  However, I've had difficulty finding the schema to ckt 424 and 423 to check for shorts.  Can someone point me to the schema?


After figuring those items out, will likely start on the suspension.


I do have a scanmaster, but understand there's now a Powerlogger which i've seen on full throtte...is there a link that will give some more information


Thanks for any advice / help.  I'm going to try and make it to Itasca tomorrow as well.


Chris

[earlbrown]

the stock turbo is made by Garrett.    Sounds like you're on the right track with the troubleshootin g and I highly recommend getting the powerloggger and a wideband.

[daveismissing]

If you are local to these guys, contact Benny etc, they can be a wealth of information.
Benny is in the hotel lobby right now

Troubleshootin g guides might not be that helpful on an intermittent of that sort.
Check contacts for corrosion, wire integrity.

Are you using the timing features of the t plus? White black wires? Double check me on this but I think it can cause a code under certain circumstances?

[Steve Wood]

code 42 is usually caused by a bad module..BUT, if you have the old Translator T with the timing option, that often caused a problem.  I believe it was spliced into the the module circuit and caused an affect like a bad ground....thin k the best cure was removing that feature and restoring the original circuitry.  Modern chips don't need that feature anyway.

Google will probably find you discussions on that problem

[cashbrook27]

I think I found it, maybe.  Went to the Buick show today at Itasca and met Benny & Prasaad.  They took a quick look and said to get contact with them after the weekend.  They were both great and very helpful.
Anyways, as they and others were fiddling around, when I left I noticed that almost any rough patch would now cause the service engine light to come on.  So, in recalling the two locations wires may have been moved, even inadvertantly. ..the first place was the battery.  There, I found a loose connection, which I tightened up and went the rest of the way home without the service engine light coming on.  Now, to figure out what it is that's connected to the battery 
 
 

[Steve Wood]

Did some one connect the orange ecm memory wire to that point?

[cashbrook27]

That's what it looks like;  I'll try and get a pic to load up as it will be easier than explaining the hack job that is going on.
 

[Steve Wood]

That will cause problems if not we'll connected

Steve