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> L-Jet: Over My Head, Bad ECU, car's back on the road.
Mike Sanford
post Sep 23 2013, 10:03 AM
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From: Tucson, AZ
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I'm a little above my skill set playing with this stuff.

Took the wife out yardsale-ing Saturday morning. This is Tucson, maybe 85 degrees at 8am. Drove two blocks from home, stopped at one. Drove another 5 blocks, car acted as if it ran out of gas. Gas tank is full. Key on, pulled fuel line off of rail and opened air flow meter, squirts fuel. Pulled injector out of a cylinder, moved air flow meter, no fuel.

Shoved my analog voltmeter into injector plug, no sign of a signal at the injector.

Played on the internet looking up l-jet trouble shooting, decided to start with checking the relay because it seemed less intimidating. From what I'm seeing there should be voltage between 88a, 88b, 88c, and 88z and 85 (the ground). I have voltage everywhere except 88c. Come back inside, back on the internet, 88c looks like it powers the auxilary air valve. Would this cause the whole system to shut down? Is there something else I should be checking?

Thanks,
Mike
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Mike Sanford   L-Jet: Over My Head   Sep 23 2013, 10:03 AM
timothy_nd28   Everything sounds right. You will not have voltag...   Sep 23 2013, 10:14 AM
Mike Sanford   [quote name='timothy_nd28' date='Sep 2...   Sep 23 2013, 10:19 AM
timothy_nd28   Good, it's easier to troubleshoot it this way....   Sep 23 2013, 10:22 AM
Mike Sanford   Home alone, but was able to watch meter through th...   Sep 23 2013, 10:33 AM
timothy_nd28   Seems abit low. Check the voltage at the battery....   Sep 23 2013, 10:37 AM
Mike Sanford   Battery is at 11v, but there have been multiple at...   Sep 23 2013, 10:46 AM
timothy_nd28   Okay, now check pin 88y. You won't need to st...   Sep 23 2013, 10:49 AM
Mike Sanford   11v.   Sep 23 2013, 10:56 AM
timothy_nd28   How accurate are these readings? Are you still us...   Sep 23 2013, 11:03 AM
Mike Sanford   How accurate are these readings? Are you still u...   Sep 23 2013, 11:30 AM
timothy_nd28   Not a problem. Anyways you have 11v going in and ...   Sep 23 2013, 11:51 AM
Mike Sanford   Not a problem. Anyways you have 11v going in and...   Sep 23 2013, 12:06 PM
Mike Sanford   Not a problem. Anyways you have 11v going in an...   Sep 23 2013, 12:10 PM
rhodyguy   great, straight forward advice!! nice work...   Sep 23 2013, 12:14 PM
timothy_nd28   I identified a problem, but it maynot be the probl...   Sep 23 2013, 12:14 PM
Mike Sanford   I identified a problem, but it maynot be the prob...   Sep 23 2013, 12:19 PM
malcolm2   I identified a problem, but it maynot be the prob...   Sep 23 2013, 12:24 PM
timothy_nd28   K, verify you still have spark. Next pull off the...   Sep 23 2013, 12:24 PM
Mike Sanford   This is the part that intimidated me, and why I st...   Sep 23 2013, 12:40 PM
Mike Sanford   Found a diagram online. Checking now.   Sep 23 2013, 12:43 PM
Mike Sanford   Good voltage across all the pins you listed. This...   Sep 23 2013, 01:01 PM
malcolm2   Found a diagram online. Checking now. bowlsby...   Sep 23 2013, 01:21 PM
timothy_nd28   It should read 0 ohms.   Sep 23 2013, 01:15 PM
timothy_nd28   When the meter is set to resistance, touch togethe...   Sep 23 2013, 01:24 PM
Mike Sanford   I hadn't zeroed out the meter while checking r...   Sep 23 2013, 01:59 PM
timothy_nd28   That last step verifies that the resistor pack is ...   Sep 23 2013, 02:06 PM
Mike Sanford   I'm grateful for all the help, but at this poi...   Sep 23 2013, 02:14 PM
timothy_nd28   Very welcome. I have a exam in a hour, so this wor...   Sep 23 2013, 02:18 PM
Mike Sanford   Didn't get to play with the car for over a wee...   Oct 2 2013, 11:21 AM
timothy_nd28   It's going in that direction in a hurry. At t...   Oct 2 2013, 12:00 PM
Mike Sanford   No resistance between 13 and 5. Definite spark.   Oct 2 2013, 12:34 PM
timothy_nd28   Find and disconnect the CHT connector. Ohm out at ...   Oct 2 2013, 12:39 PM
Mike Sanford   Headed out to work, car bank on hold. Thanks,   Oct 2 2013, 12:46 PM
Mike Sanford   Gal on Craigslist had two 1.8 ecu's for sale. ...   Oct 3 2013, 01:33 PM
KELTY360   Gal on Craigslist had two 1.8 ecu's for sale....   Oct 3 2013, 02:43 PM
X911IC   Timothy! You are awesome. I have bookmarked ...   Oct 3 2013, 01:42 PM
timothy_nd28   Glad to hear this, but we still have to address a ...   Oct 3 2013, 05:08 PM
larryM   http://www.hiperformancestore.com/Ljetronic.htm h...   Oct 3 2013, 09:13 PM
stugray   Nice work! Any chance you can pay tumamilhem ...   Oct 3 2013, 09:20 PM
Mike Sanford   When I found the units on Craigslist, I thought I ...   Oct 3 2013, 10:46 PM


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