91 maintenance stream of consciousness

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semlin

curmudgeon
Joined
Mar 27, 2003
Threads
332
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5,236
Location
north of 49
ok, did a fuller service on the 91 (151k) and finally, I hope, fixed the bad temp sensor.

-it had original leads, and looked like original distributor cap and rotor. New ones have made a slight difference if any. Can't see much wrong with the old ones to be honest. They are spares now.

-a new fuel pump regulator makes a huge difference. Whole sound of the engine changed and it seems to have noticably more acceleration so obviously a few of the gerbil wheels were obviously in need of either more or less gasoline. I would not have believed it.

-the old pcv valve was probably original judging by how nasty it was and allowing air in both directions. Not sure what damage that could cause. The hoses seemed clear of oil but looks like some congealed gritty oil under the valve cover. Do I need to pull and clean it?

-a new modulator and all new vacuum hoses seems to have revived the EGR system. Not sure why I bothered but I guess it can't hurt. Probably just because it is so much easier than on the 93

-had to pull the thermostat housing to get at a bad ECT sensor. Looks like there was a slow leak of coolant from the rad hose at one time that has shorted out these sensors. The dash sensor still only works about 60% of time.

-No spare t-stat housing gasket so I had to make one with coolant system gasket paper from the local jobber. Do these last or are they temporary?

-could not break free the high tension fuel line bolts on the fuel filter to change it out. Does anyone know how to do this? I can't fit a breaker bar on an angle where I can move it get purchase and even a half inch ratchet would not budge it.
 
regulator is a good call, I am still haunted by this PM item at my mileage (164K).

of course, now the pan is leaking so I have a gasket to install before I worry about that one :)
 
(-could not break free the high tension fuel line bolts on the fuel filter to change it out. Does anyone know how to do this? I can't fit a breaker bar on an angle where I can move it get purchase and even a half inch ratchet would not budge it.)

Dankunz

You know I had that same problem when I did my valves. I decided to replace the filter and could not budge the fuel line bolts, Not the ones for the holder but the banjo :confused: bolts,right. So i put the FRAM back on the shelf and said later. So later came quicker than I thought and I have a OEM one on the way. Figured so much trouble put on the quality parts.
Well sorry for the rant havent had my morning coffee yet, Im ganna try to put a six point on one side and use the pnumatic helper to take it off the other. Then take the filter/bracket off the truck and use a strap wrench or something to hold the filter while I take off the other side.
I have been told on numerous occations to Keep It Simple Stupid so I hope some one else answers up incase their is a better way, I'll be watching as I have a couple days before the elf rings the bell and I have to do mine.
The banjo bolt fuel line will start to bend if you wedge something inbetween them and the frame to stop the filter from spinning in the bracket as you crank down on the wrench. There has to be a Right way
Also would using a monkey wrench to hold it for step two be a bone head Idea, I have a monkey wrench.
Someone here knows the answers.
steven
 

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