NOTE: ONLY THE "NEWER EEC-IV's" can dump real-time DCL data. I'm not sure what year it started with the stangs. It was "sometime" around the MAF versions. I'm 99% sure that there is NO SD EEC-IV that supports the dumping of real-time DCL.
BOTH are fine! I would say it depends on a few things:
o The price you can get at a local store. (probably autoxray)
o Do you want the same tool for both GM and Ford pre-OBD II cars (Scantool)
o The Autoxray has the upgrade from the company (buy from their website) that *I THINK* allows you to have your Ford EEC IV scanner talk to the PC
o The Autoxray is a smaller unit and easier to hold.
I use my scantool for both my stang and my Olds. I didn't want to have to buy two different tools.
You can sometimes find good deals on ebay or swap meets.
You may find an older unit that did display the codes. I have 2 small scanners (same size as those stupid beep/blink-LED cheapo units) that displays Ford codes with LCDs (they stopped making that unit for some reason - they were only $45 each from Summitt)! Those are AWESOME!!
I also have an "old" 1987 Alltest unit that displays codes in LEDs. The Alltest unit is for all domestic cars. It's GREAT if you have an early 80's GM car. (I don't, but it also works on my Fords. ) I got the Alltest at a swap meet for $40. I got it before I bought the Ford LCD display scanners.
BTW: NONE of my scanners are for sale - get your own.
Thanks for the help. I will only be working on my mustangs so I might get the AutoXray. I just hate watching the blinking light and listening to beeps to interpret a trouble code. I figured there must be a better way. Does your Scantool do much more than the AutoXray?
I like the scantool because of the better built-in data logging and 4-line display. It's great on my Olds!
*I AM NOT SURE* if you can get DCL (sensor data) from your '89. The autoxray 2-line display is too small, IMHO, for data display. But, if you buy autoxray from the web site, you can get a PC link ($75) added in so that you can do Much Better data logging with a lap top.
Autoxray seems to say that you can do data logging with your 89 ( http://www.autoxray.com/cgi-bin/connector.asp ). However, they also seem to say that you can do data logging with an 87. Well, "maybe" a Calf '87 stang with MAF, but I'm PRETTY SURE that NO SD EEC IV can send DCL data. The 49 state '87 stangs were still SD.
The scantool also reads Ford ABS codes. (Note: I didn't even put in the ABS diag connector for my ABS.) The scantool will NOT read GM ABS codes. I had to buy a separate OTC ABS scanner for the ABS on my Olds. Grumble, grumble.
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