renix ground testing

[2stix]

ok i will try and squeeze under there and unplug it, then check the DMM. and i hope you did not take that the wrong way. i am so grateful for your input on these things. i was just trying to make sure i understand what you meant. because i get different readings every time i switch the key off and on, i may work on that first. just wiggling the ignition a small amount changes the Ohm reading quite a bit. while i was sitting around i thought i would check/test all my relays. turns out that out of the 4 by the coil, 2 of them did not energize when a 9v battery was applied. one of the bad ones was to the A/C clutch, the other was either the fuel pump, or the O2 sensor. since the fuel pump was working i am thinking it was most likely the O2 sensor relay. if so this can be the root to my low idle issues. i found three good relays in the garage so i will let you know what happens.

 

[cruiser54]

Good idea on the relays, and no offense taken.

Test after replacing them, before squeezing under the Jeep.

 

[2stix]

started quicker, didnt rev as high and for as long but still pretty high. leveled off at a decent idle for a few seconds, then back down. seems to run a little smoother but not a big change. for the first few seconds i thought i was a happy jeeper. oh well i was for a couple seconds. back to the grind.

 

[cruiser54]

Have you ever checked the O2 sensor heater?

Should be 6 to 8 ohms across the red and black wires on the sensor itself.

 

[2stix]

i did back when i was working on it before. if i remember correctly it was around 7 ohms. at the time i also had a borrowed DRB2 tester that confirmed my findings on the O2 sensor. everything that the DRB2 was able to test, it did, and there were no issues according to the DRB2. for kicks i checked the fuel pressure again this evening and key on i get about 41# after start up it drops to about 36 maybe 37# with vacuum line connected to regulator. disconnected vacuum i forget but it was getting dark. again tomorrow.