UNABLE TO SCAN ENGINE CODES

[scottfab]

Originally Posted by GOLDCYLON

Scott reread the post. The OP GOFAST has not identified either of his two scanner or readers.

Thats my point Tom is the one with a MT2500 scanner. Your link is for Toms model and not the OPs

Still confused?

no not now. "you're" correct I was reading the wrong post. My bad.
Thank you. I deleted my confused posts to clean up the tread.

Originally Posted by GOLDCYLON

As to this comment Scott why do you consistently feel it necessary to attempt to chide the membership in your posts?

No I do not know the snap on scanner well. As aready stated I know the AutoXray 6000 and the Tech 1-A well.

WOW! you took that as a dig? NOT AT ALLLLLLLLLLLL
It was an assumption that I knew nothing of the Snap on scanner.
Please reread!

[GOLDCYLON]

Originally Posted by scottfab

no not now. "you're" correct I was reading the wrong post. My bad.
Thank you. I deleted my confused posts to clean up the tread.



WOW! you took that as a dig? NOT AT ALLLLLLLLLLLL
It was an assumption that I knew nothing of the Snap on scanner.
Please reread!

Thanks for the cleanup. Ok thanks for that clarification. Now back to the OP what Scanning/reading tools are you using?

[scottfab]

Originally Posted by GOLDCYLON

Thanks for the cleanup. Ok thanks for that clarification. Now back to the OP what Scanning/reading tools are you using?

GOFAST apparently you are "OP".
Not sure if you were but I was confused about what an "OP" was.

[VetteMed]

Originally Posted by cvette98pacecar

So what is the best scanner on the market for our cars?

Tech 1 or Tech 1A, or Mastertech (does everything the Tech 1/1A can do, and more).

[GOFAST]

One of the scanners was a SNAP-ON but I'll have to check the model. I'll have to check the make on the other as well.

[GOLDCYLON]

Originally Posted by scottfab

GOFAST apparently you are "OP".
Not sure if you were but I was confused about what an "OP" was.

OP='s Original Poster. GC

[GOLDCYLON]

Originally Posted by cvette98pacecar

So what is the best scanner on the market for our cars?

For all the functionality that GM intended in the Atari Generation. The Tech 1-A. Or Mastertech which is the same device.

A lot of the newer scanners will do 90% of what the GM scanners will do but not everything. GC

[GOLDCYLON]

Originally Posted by Dynomite

How about TS........for Thread Starter

I have found that the Tech 1A main electronics board costs $500 to replace from Vetronix Corporation. Vetronix Corporation will not send you a replacement main electronics board but rather you have to send your Tech 1A to them for a $65 service charge just to look at it. I have run into two Tech 1As within the last month each of which had a bad main electronics board.

Always possible Cliff these units are becoming long in the tooth like thier owners lol. GC

[scottfab]

Originally Posted by cvette98pacecar

So what is the best scanner on the market for our cars?

Don't know about best but I use Diacom data logger (works on a laptop with a special adapter and ODBII connector) and a Dyno-Scan by Auterra.
With these I get codes and data logging. A very handy feature for analysis of problems instead of shot gunning parts. These are great but cannot perform the "active diagnostics".

For active diagnostics I use the car's built in tests. The 90 has many that were left out of subsequent MYs. To access these I made a ODBII connector that simply has a rotary selector that grounds one of about 5 pins at a time. What gets grounded is all in the manual.
(ADDED LATER - I also have a CanOBD2 scanner by INNOVA.

[QB93Z]

To go back to the original question about codes. I have had situations where the Service Engine Soon light comes on and there are no codes stored.

One condition where I have seen this is when a primary injector had a broken wire. No fuel to one cylinder caused a lean condition on that side and the SES light would come on and go out but I wasn't getting a code.

Another situation that I never identified, but I suspect was failing injectors was that the SES light would occasionally come on after a full throttle acceleration, would stay on until the engine was turned off and restarted. The SES would not return after the restart, and there were no codes set. I saw this several time over the years with my 1993.

GOFAST, you may be reading the codes correctly, but there aren't any there.

I recommend that the protracted discussion about code readers and data loggers be taken to a separate thread and we try to help GOFAST with his engine performance question.

Jim