Ωhm

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.

Is vehicle equipped with Low Fuel Warning Module (LFWM)?

Need to determine if fuel sending unit is functioning properly. Disconnect connector either at fuel pump (C139) or the flat six pin connector (C157) near parking brake. Using this specification, 0Ω's=Empty and 88Ω's=Full. Connect DVOM to C157_C (fuel pump side) and ground or connect DVOM to C139_A and C139_B (fuel pump side). Measure resistance. Example for good fuel sender would be, if you think you have a half tank of fuel, measurement should be around (non linear) 44Ω's.

Should be a global setting (windows) under control panel / printer devices / Printer Properties.

Check print quality setting. When set to 'Draft', this will extent cartridge life. Just a suggestion.

Tough list of symptoms. Lots of cluster problems. Check connector (C203) on back of instrument cluster, make sure it set and locked in properly.