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Update: compression checked and inspected spark plugs tonight. 1-202psi 2-204 3-200 4-203 5-185 6-206 7-210 8-204 Checked with engine warm, fuel pump unplugged, all plugs removed, and throttle closed. Numbers seemed a little high to me so I checked my tester against the gauges on...

Did a little more troubleshooting today. Installed an old primary o2 on bank 2 and cut the signal wires. I installed a jumper between oxy1 and oxy2 in the diag connector. This should make the fuel trims identical for both banks. Reset ecu to clear mil. No mil after a 25 mi test drive and it...

Thanks George. That article does give more insight into the voltages seen. I did jumper te1 and e1 and both vf1 and vf2 are switching at 8hz or more(per tsm). I cannot see exactly what the values are because my dvom is slow. I may pick up a cheap analog meter to help with this. So with the...

Ok have a little more info from today. Ohmed both coils and primary's and secondary's checked good on both. Picked up a new coil for testing purposes and installed on bank 1. Same issue. Swapped bank 2 with old coil from bank one. Same issue. I think it's safe to say the ign is functioning...

170k on donor car. Stock injectors. All are pulsing via stethoscope. Leakage could be possible. But not picking up any excessive fuel odor or smoke from exhaust. Doing Xmas traveling today but should get more testing done tomorrow evening and will report back with results.

Checked for intake leak again. No increase in idle using carb cleaner on all lines and gaskets. Tapped on fuel rails at each injector with wooden dowel and small hammer. Desoldered the secondary o2 from primary and left unhooked. Went for 25 mile drive with mixed city / hwy driving and a couple...

Both are 89661-50032. Us models. I'm planning on doing some testing this morning and will report back in a couple hours

Sat approx 3 months. Pulled from running driving donor. Ran several tanks with sea foam added. Local guy seems to think that egr delete is the culprit. I'm thinking it would be affecting both banks not just one. Have checked for air leaks but can do again.

Have not checked mixtures. Had same dtc with original o2 sensors. Bank 1 was white colored indicating lean when replaced. No change with new sensors. Secondary's are only used to detect cat function and were wired to primary's to eliminate a fault code. I have not desoldered and tried.

92 Ls drivetrain swap into f100 pickup. Used complete harness and instrument cluster from donor car. Running driving great aside from a dtc code 25. Comes on as soon as motor warms up after a ecu reset(I assume as soon as goes into closed loop) Occasionally get both 25 and 26 and sometimes 25...

Found 21 pin connector not hooked up. Was in same area as heater harness. Everything working now!

+b 12.41vdc key on, 14.14v running Ecu coolant temp sensor 1.47kohm at 65*; 0.52kohm after ~10 mins idle (good) I will get cel earth traced back to ecu tomorrow.

Wiring has not changed pulled 100% of oem harness from car. Plan is to get everything up and running before thinning out unneeded circuits. Sub o2 do not run heaters only primary's. I will report back this evening on b terminal +v. I should have a couple hrs to troubleshoot before work.

Got to do a little more checking before work tonight. Cel has 12v+ to it from key. If I jump other side to ground it illuminates. Ofl to ground on red-blue wire. Should have a little more time tomorrow afternoon to trace all the way back to ecu. Planning on wiring secondary o2 signal wires...

Is there a quick way to make sims for rear o2s to test? I have the sensors and the cats but don't want to pull the exhaust and weld in unless I have too. I have read you can wire them in to the primary's (parallel).

Checked all pins on diag connector under dash:(key on motor off; motor running) Ab 0.7 ; 0.95vdc A/c 0 ; 0v A/d 0 ; 0v ECT 0.46 ; 0.46v W 0.6;0.6v (ofl continuity to earth) Eng 0.05; 0.05v Tt 0.01;0.01 Tc 10.35; 13.39v E1 0; -0.01 Te2 4.98; 4.98v Te1 4.98;4.98v

Maf has +5vdc. I will test B terminal and update. I was under the impression that it would just throw a code without the secondary 02s. They're just for there for converter function check and the primary's did all the closed loop calc. Thanks or the response.

Short version of status: 92ls donor swap Ito a 68 f100 with crown vic ifs. Pulled motor and put new plugs wires caps rotors etc. motor ran ok in car but was a little rough. Alternator was not putting out due to leaking so pump. All new now and have 14.3@idle. Pulled and meticulously labeled...