Ωhm

Need to check your fusible links.

I'm just looking at a Ignition Switch diagram (88 Elect Manual) which shows a LOCK indent. When key is in the ACC position, can the key be removed? I would think you could remove the key in LOCK, but not ACC.

^^^^^ LOCK is between ACCY and OFF on the ignition switch. Could be a sloppy ignition switch or your turning the key to ACCY.

Confirmed.

Note STFT climbs when in CLOSED loop. INJ PW also climbs to about 11mS. Time 4:40 Do this test with harness disconnected.

88 Electrical Manual

Preliminary checks should involve 12vdc at O2S (C229_A) and O2S (C229_B) to ground on the harness side. On the component side, check for open circuit (heater element) between A and B.

Idle Speed Activator Control Motor. This is just one of its many names. Many things can cause high idle. Check for vacuum leaks, hung up throttle cable. Check basic things first.

Yeah if cluster is disconnect, problem seems to be cluster.

I'm using the 88 Elect Manual, so this could be apples to oranges comparison. Disconnect the Head Lamp Switch, with good fuse in, turn Key On. Does fuse still blow?

Renix timing is fixed. Maybe a degree or two only (CPS).

2.5L uses a stepper motor with Closed Throttle Switch (CTW) located in the tip of the actuator.

KneeMail sent.

Check your TCU control fuse (7.5A). This fuse supplies power for the backup lights.

Is the 1988 Jeep Wagoneer (not Grand Wagoneer (SJ)) considered to be an XJ? This vehicle has no amber (separate turn signals) in the taillights. Its wired similar to the MJ.

Keep this in mind when wiring up a trailer harness for the vehicle. Trailers have different types of lighting setups.

Pete, two conditions will bypass the fuel pump ballast resistor. 1) Starter relay when engaged. 2) O2S relay will engage (ECU controlled) when under a WOT condition (not much need for O2S during WOT). Check out page 17 in the 88 Elect Manual. 88 Elect Manual

Concur.

To help get the property owners attention, put a lien against the property. Need to look up your state laws.

Try posting in the sites Classified section / Wanted.

Wiring tested good. Don't know of any test for the LFWM. Seems to be either fuel gauge or printed circuit. Look for open circuits on the printed circuit. Maybe it was a bad day to dust.

Google search "macbook pro dvd stuck". Mentions something about Re Starting w/mouse key held down and eject key on keyboard.

Fuel gauge has three legs. Power, ground, and the fuel sending unit. Sending unit leg seem good from your point of measurement to sending unit. Check power (key on) and ground (key off) at disconnected Instrument Cluster C203. Re--measure fuel sending unit. C203_18 (B+). C203_10 (GND). C203_17 (fuel sending unit Ω). Using the following link for reference: http://www.bteventures.com//mj1988electricalmanual.pdf Page 29, Page 78, Page 95

Yeah, that will determine which cluster pins will need to be tested for power and ground, but since fuel gauge is your only problem and all other cluster items work, suspect printed circuit or faulty fuel gauge or possible faulty Low Fuel Warning Module, if equipped.