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09-07-2012 | #1 |
Join Date: Sep 2012
Location: United Kingdom
Posts: 68
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Use of Tech 1
I am looking for a little help in using my Tech 1 equipment and was wondering if anyone can assist. I have had my 1990 ZR for nearly 10 years and it has just developed rough running when cold, including a massive bog when accelerating. It is fine when warm. I wish to check for any ECM Trouble codes and am looking for some info on carrying out a straightforward check using the Tech 1.
Please note that I have placed a jumper wire across points A and G of the ALDL connector and have 3 CCM TC's - H72, H74 and H22. I am aware of these and know the reasons why they occurred. Any help with how to use the Tech 1 to interogate the ECM would be much appreciated. Thanks, Richard - 1990 Charcoal and Grey |
09-07-2012 | #2 |
Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,801
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Re: Use of Tech 1
take out the jumper from the aldl and plug in the tech1 instead. Try to establish comm with the car. The tech scanner may ask you for the year and engine vin digit ('J' for the LT5).
You can then read codes directly, view realtime parameters, or initiate any number of included diagnostics depending on the cartridge you are using. |
09-07-2012 | #3 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,706
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Re: Use of Tech 1
IS your CEL ON?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
09-08-2012 | #4 |
Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,685
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Re: Use of Tech 1
Set up your Tech 1 with one of these cartridges:
GM/Ford/Chrysler Power Train v1.0 GM 81-94 GM 88-91 Body Systems Mass Storage Cartridge Connect the Tech 1 into the ALDL connector and to the cigar lighter for 12 vdc power. Turn the ignition key to the ON position. The Tech 1 should be powered up and ask if you want to do a self test. Next it will display menus to identify the make, year, and engine type of your car. Use the arrow keys on the Tech 1 to make your selections. After the Tech 1 has established communication with your ECM, a list of menu items will allow you to select DISPLAY DTC (or something like that). Use the arrow keys to scroll through all of the DTC's the ECM has stored. Use the Exit Key to return to the Menu Selection screen and select MISC TESTS then select CLEAR DTC (or something like that). This takes you to a screen that allows you to clear the trouble codes. Note, if you have a problem that still exists, the DTC will return when you drive the car. After you have cleared the codes and gotten familiar with the Tech 1, start the car, use the Menu to select DISPLAY DATA and then use the arrow keys scroll through the ECM parameters that you can monitor. Now the fun starts. With an assistant driving, monitor parameters to try to diagnose your performance issues. Good luck, Jim
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If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member |
09-08-2012 | #5 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,188
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Re: Use of Tech 1
I have the manuals for Tech 1 if needed, just need your e-mail
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
09-08-2012 | #6 |
Join Date: Jul 2005
Location: Cresson, TX
Posts: 970
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Re: Use of Tech 1
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09-09-2012 | #7 |
Join Date: Sep 2012
Location: United Kingdom
Posts: 68
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Re: Use of Tech 1
Thanks very much - that would be great! My e mail is richardgs55@btinternet.com
Thanks again, Richard |
02-04-2021 | #8 |
Join Date: Apr 2017
Location: Texas
Posts: 2
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Re: Use of Tech 1
I found your post on the forum and I was wondering if you could send me a copy of the Tech 1A manuals. My email address is slunenschloss@yahoo.com
Thanks, Steve |
09-09-2012 | #9 |
Join Date: Sep 2012
Location: United Kingdom
Posts: 68
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Re: Use of Tech 1
Hi - When the engine was cold and running rough, the 'service engine soon' light flashed on / off a few times. After it warmed up, the engine was fine with no flashing light - it remained off.
I'm planning on spending some time on it tomorrow - Monday. Thanks for coming back to me, Richard |
09-09-2012 | #10 |
Join Date: Jul 2005
Location: Cresson, TX
Posts: 970
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Re: Use of Tech 1
Got it...
Thanks! |
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