cruiser54

Fuel pump ground behind the left tail lamp? CRUISER'S MOSTLY RENIX TIPS IMPROVING THE FUEL PUMP GROUND JANUARY 3, 2016 CRUISER54 59 COMMENTS The fuel pump and fuel tank sending unit ground at a sheet metal screw up behind the spare tire on an XJ, and behind the driver’s taillamp on an MJ. Not only is a sheet metal screw a lousy way to ground things, this ground path is long and travels through some connectors that are prone to corrosion and moisture. Locate the black wire on the HARNESS side of the fuel pump/sender 3 wire connector. Remove a 6″ length of the split loom covering. Strip back about 1/2″ of insulation from the BLACK wire. Take your new ground wire, preferably at least 14 gauge and 12 to 18 inches long as needed, strip it about 3/4″, and wrap it around the exposed part of the harness plug wire.Solder the connection. Tape it up and reinstall the split loom covering. At the other end of your new ground wire, add a crimp on eyelet. Attach the eyelet under a bolt that goes directly into the chassis. Be sure to clean the attaching point til shiny and apply OxGard to the contact surfaces.

Squirrel piss.

That^^ is why I ask. If the radio cuts out and turn signals don't work during "failure mode", it could be the ignition switch.

Chances are it would pass as long as it wasn't detected in the visual. You could "age" the plate before installation somehow.

Does your radio cut out or turn signals quit working when the AC cuts out?

Gimme the wire color codes for each connector plz.

Is the EGR installed on the intake manifold? Is there a plug in the intake manifold where the other end of the EGR tube would thread in?

The EGR valve itself was removed and blocked off?

No. Just take it off and make sure no air can get around the pintle. You can use your mouth to check it. I may have a lead on a stainless steel shim that replaces the gasket and seals off the EGR. Will look stock.

why don't you guys put a block-off plate at the EGR?

Have you both removed and tested your EGR valve?

yes

It's a 5/16" headed square drive. An absolute b*@ch to remove. Even with the engine on a stand, I've had to resort to welding something to it in order to get it out. I only did it on HO blocks when I was using them in a Renix application. For the CTS. I would recommend leaving it there and remove the CTS instead if you feel it necessary to do a coolant flush.

https://walbrofuelpumps.com/jeep-cherokee-1989-1990-fuel-pump-6-cyl-4-0l.html

Ever consider going to the Walbro or Bosch website and looking around?

I know you probably don't wanna hear this now, but I'm posting it for anyone who doesn't know. Whenever separating the engine and trans, ALWAYS break those 2 upper bolts loose before any others.

Nice find. I love wiggle tests.

I did that 44 years ago!!

what year? Make sure the line from throttle body to MAP sensor is perfect. Tighten up your intake manifold bolts. Your oxygen sensor may be bad. If your Jeep is 90 or earlier, be sure to complete Tips 1 through 5 at www.cruiser54.com.

See if the coil is made by Magnetti Marelli. If so, it is automatically highly suspect.

^^THAT^^ is a fact. How is it being determined you are in need of a TPS?

You don't need the ballast resistor. It's just there to make the pump sound quieter.

For reference: CRUISER'S MOSTLY RENIX TIPS ADDING THE SENTINEL HEADLAMP FEATURE JANUARY 3, 2016 CRUISER54 23 COMMENTS I love the Sentinel Headlamp feature. It allows my Jeep to provide me with safe lighting after exiting it at night. We live in a rural area with no street lights. Here how it works. I researched an old wiring diagram and found that all that was needed to have this feature was plugging in a relay!! And, the plug is already in our Jeeps. The relay is part number 56000636 or 56009324 and sells for about $50. Since I part out XJs and MJs, I went through my stash and found I had saved a few without knowing what they were. Think “junkyard” here. I simply plugged the relay/timer in and instantly had sentinel Headlamps.

Looks to me like the PO tried to go "ricky racer" with the black tank. A generic overflow tank with the stock radiator should work fine. The root cause could be as simple as a bad radiator cap. No need to go with the Mac's conversion on a 2.5 engine.

Some folks need the valve for visual emissions inspection.