'93 North* Glitch out of hand!

[Mountie]

Originally Posted by Ranger

Sounds like a failing ISC motor. Check rockauto or gmotors for a new one.

I do not believe you have to remove the fuel rail or the injectors to R&R the FPR. Just remove the manifold cover and it should be mounted right on the fuel rail.

I attached 3 photos... Of my SPARE Injector assy., not done on the car yet...

1, is the FPR and how it can't be raised up from the rail. Notice the 'crown' shape, on rail, covering the FPR rim..

2, The FPR has a bracket* on the side & also has the fuel inlet that has to be pulled sideways, out, from the fuel supply, under the rail surface. (* Bracket for the 4.9 engine - exposed outside of system, attaching vacuum hose to top nipple)

3, The whole fuel assy. has to be raised to get at the FPR.

FPR : $145.47 Part# 17089203

ISC 'Actuator' : $176.70 Part# 17112866

Should I really have to replace 'o' rings after removal?

[Ranger]

That does not look like pics I remember seeing of the '93/'94. Looks to me like you have to remove that black cover surrounding the manifold. Maybe that's the gasket? I'm not real familiar with the '93/'94.

[Mountie]

Originally Posted by Ranger

That does not look like pics I remember seeing of the '93/'94. Looks to me like you have to remove that black cover surrounding the manifold. Maybe that's the gasket? I'm not real familiar with the '93/'94.

The "black gasket" is the top side rim of the injector housing. The fuel rail, underneath, with the injectors are attached with tabs on the underside. ( A big pain in the butt to dissconnect fuel stuff from the underside of black plastic) I just lift the ENTIRE 'black plastic' gasget up, pulling the injectors up with it. Which I have to do to gain access to the FPR, to be able to dissconnect it.

Injector wiring is on top ( under thin cover ) with injectors attached underside. This gasket is more like an assembly.

I'm going to take the car for a little test drive and see what (if anything) changed. Before buying ISC & FPR .

[Ranger]

Not at all what I remembered seeing.

[Mountie]

Originally Posted by Ranger

Not at all what I remembered seeing.

Yea, I know...... I have gray hair too.....

I can't afford a new Caddy, so I have to learn this one.

To me, even getting, (later) a new G.M. North* longblock, it's worth it, figuring the cost of a new performance car these days.

[Mountie]

Since I had to replace nearly all the coolant, can I get those 'required' coolant tablets at a parts store? Like a PepBoys or an AutoZone?

[submariner409]

If you had no leaks before the work, and the hoses and their connections are OK, don't worry about the Bar's Leaks B12P... sealant tablets or brown powder, available at any parts house. The tablets or powder comes in a lettered clear plastic tube with end caps.....not a bottle or plastic bottle. It is/was used on initial assembly to stop nuisance leaks.

[Mountie]

Originally Posted by submariner409

If you had no leaks before the work, and the hoses and their connections are OK, don't worry about the Bar's Leaks B12P... sealant tablets or brown powder, available at any parts house. The tablets or powder comes in a lettered clear plastic tube with end caps.....not a bottle or plastic bottle. It is/was used on initial assembly to stop nuisance leaks.

As per manual, "serious may occur" if the tablets are not used.

No supplements?

Just coolant - only?

[Ranger]

The cooling system supplement (sealant tabs) are just insurance against porous aluminum castings or small nuisance leaks. You can get them at Walmart or most auto parts stores. The tabs are Barsleaks product code HDC and the powdered version is G12BP.

[Mountie]

Ranger & Submariner, Back to my ISC.. One glitch is in neutral, revving up easily to 3,500, the idle doesn't drop down smoothly. It goes down, ..up a tiny bit, then down.

I read another post & dissconnected the cruise connection & plugged it back in. ??

I have not tried that result yet, I'm going to get the coolant supplement first.

I'm getting an ISC, install it then after then, I'll get the FPR if needed due to 'white smoke' that comes & goes.

Am I going in the correct direction?

Man.... I wish I could find, & take my car to a knowlegable Northstar guy near by....

[Ranger]

Hard to say, but kind of sounds like a bad ISC motor.

Does the white "smoke" smell like coolant or gas?

[Mountie]

Originally Posted by Ranger

Hard to say, but kind of sounds like a bad ISC motor.

Does the white "smoke" smell like coolant or gas?

Gas..... ( You NEVER forget that coolant smell !! )

By the way.... As soon as my budget allows I will become a supporting member again......

[Mountie]

Originally Posted by Ranger

Hard to say, but kind of sounds like a bad ISC motor.

Does the white "smoke" smell like coolant or gas?

The new ISC does not have the shoulder sticking out like in the old ISC. I will turn in the new bolt to match the old one ( 7 threads, 1/4" - sort of) As a ball park length?

The new ISC didn't have the bolt in the plunger yet, and installing it for the first time it feels like the threads are bad, but I think it is like a locking thread? It did go in. ( photo shows it not it threaded yet)

It just felt scary.

I hope the o.60 gap can be done now...... Since the plunger is already in all the way.

I'll see if the manual says anything, but I believe it requires a diagnostic hook-up.

So, install, adjust to 0.60, THEN plug harness into it?

[Mountie]

[quote=Ranger;1681784]Hard to say, but kind of sounds like a bad ISC motor.

I installed the new ISC. Engine off, ISC unplugged.

Photos : An overview of location, and then close-up of ISC & plunger ( center photo).... All the way in.... Came this way.

Without starting engine, maybe adjust 0.60 to the gap? Currently a 1/8" gap.

I hope I'm not driving you nuts??

[Ranger]

Yeah, try that and if that does not work, then start the procedure from the start as initially instructed. I'm not sure if it is shipped fully retracted or not.

If the "smoke" smells like gas, then you have a stuck open injector(s). Maybe a bad FPR, but I would think it would have to be pretty bad. Should be easy to tell.