My Auto Tap system needs to have the engine running or at least the ignition on before the software will recognize the connection. I don't know what system you are using, but I expect that there must be a signal coming from the Data Ling Connector.
I called you but nobody answered, so I left you a message on the 4141 line. Like Jack says there have to be two things right to connect: The data link has to be up and running and you have to have the correct serial port selected. The new software version 323 matches the serial port automatically so it is the one to use.
Scroll all the way down to the bottom of the screen.
click on the link at the bottom "OBDScan323.exe"
Save it to disk on your desktop.
Double click on its icon after you have finished downloading.
It is only 800K so it won't take long to download even with a phone modem.
Try it on your pickup first as you can expect the data link to work.
I downloaded version 2 and it installed just fine. Try that version, it allows you to select com1-com3...it looks similar to ver. 323 but no runtime error...when you select com1 for your laptop and your cable is connected to the ecm then you will get a green status indicator in the software...I think this will solve your problem...as you can see, my status indicator is yellow because I'm not connected to the ecm...this should work for you...
I guess I don't get it. Everything looks fine to me...it just doesn't start. Do you guys know if there is another screen I am missing? I was also thinking it had something to to with the VATS (vehicle anti theft system), this doesn't seem to be the case. Next I would speculate that it is clogged injectors. The fuel pump is working I can hear it, and check for gas just before the injectors.
I have NO idea what you are troubleshooting... but at 155 rpm MOST EFI systems will cut out the fuel. You shouldn't see any pulsing at the injectors.
Are all the GROUND LEADS clean, and hooked up?
EDIT: I *THINK* you're hooking up a 5.7 Vortec in the LandCruiser? Hmm, care to give us a run down on the IGNITION system and connections (i.e. bad or missing tach signal). Do you get SPARK when cranking? (use one of those test spark plugs... )
Yes, this was during cranking. I did not get much of a reading in the run only position. So, yes...in crank mode. I have not gotten a chance to work on it tonight, but I may just run out there real quick and see what kind of trouble I can get myself into tonight.
But, I may have found the problem! Back when I bought this motor, the guy told me "if it doesn't start, check your fuel pressure. This one needs over 60 PSI. TBI's need half that." So, I went and bought a new fuel pump for it. Yes...I beat the guy up when I bought it asking him and his manager over and over what the PSI was on this pump...they could not confirm it...only that it fit a 96 Vortec motor. Well I found an old pressure gauge...***I am assuming any kind will work***I think this one was an old air gauge. The PSI went to 60, and for the purpose intended, I thought that was enough. So, I hooked it up...it read like 32 PSI!
This seems to be a common occurrance -- auto parts droids insisting that TBI-compatible pumps put out "plenty" of pressure for the Vortecs. My understanding is that once the ball valve is unseated and the engine running, it requires less pressure, but you do have to have enough pressure to get it started and 60 psi is the recommended pressure. I am also sorry I didn't think of this sooner
With my old wire harness, they said I MUST run an internal pump. So I had a tank custom made. Now I find that it doesn't matter, and any fuel cell will work with an external pump
I would say that when I click the key, the pump...only for the slightest second might be hitting 39 PSI...but no more. I am just hoping that Pep Boys will take their $105 pump back...or exchange it.
How frusterating...I have been dealing with this for two weeks now...everyday...hours waisted. I just hope this resolves it. Cross your fingers...I will let you know later today. I do have to get anther part for my fuel line in the mean time...something Pep Boys does not have.
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