.044 is fine. The fuel filter is located inside the frame in the area under the air filter and the oil filter, a bit of a PITA what with the inevitable fuel spill and awkward work area. The EFI relay is a common starting problem in '91 and cheap to replace. Do a search and perform the EFI relay...
I had the exact same thing happen, the starter went dead when hot but works fine cold. Next time it happens, whack it with a piece of 2x4 or similar and if it starts OK then your contacts are sticking and you need to overhaul or rebuild your starter. This whacking business is a diagnosis aid and...
No need to change both sensors this code is for the downstream sensor. I hooked up a scanner when my Lexus came up with this some months ago and, exactly like Gumby says, the downstream sensor was fried - completely flatlined. Replaced it and never saw the code again.
Question: I seem to be...
If the hot starter wil not turn at all, give it a good whack with a socket extension or a 2x4. If it starts, then you need a starter overhaul or a rebuild. Also make sure your EFI relay cable upgrade has been done and your EFI relay is not fried.
Do the EFI Main Relay wire upgrade from 12 gauge to 10 gauge. Otherwise keep a spare EFI Relay on hand, they tend to cook from the 12 ga wire heat and the truck will turn over but not start - no fuel delivery.
Just last weekend I changed my leaking PS low-pressure return hose. With heat and age it had become so hard and inflexible I had to cut through it with a knife and remove the two sections - again by slicing through the hose. When hose becomes this hard there is no way the hose clamps can make a...
I just completed this and it worked perfectly in my '91, one hour of labor and 99 cents of parts (a pack of two 1n4004 diodes from Radio Shack) - best mod for under $1! Thanks Wayne from Yahoo 3FE.
Good site to download wget for windows:
http://gnuwin32.sourceforge.net/packages/wget.htm
if you download/run from the "Setup program" link everything will be installed using the defaults and the program can be found, from the command prompt, at location
C:\Program Files\GnuWin32\bin...
The best thing I ever did for my truck was adding a pusher fan. Not only is the A/C always great, but I have had NO engine temp problems in traffic, 95 degree weather, hill climbing, etc.
Since you just bought this truck, I can see the PO wanting to eliminate some minor radiator leak with a "miracle cure" gunk that simply did not get along with Prestone. The fact that your overflow bottle went low also points in this direction. Look out for leaks after you flush and refill...
The auxiliary fan installation solved my heating problems to the point where I am not even aware of the fact that the fan is there - the whole issue is gone from my mind.
"smooth as silk. Runs fine; no smoke; passed smog; oil pressure high on the stock gauge" - sounds like it aint even remotely broke, why are the Jiffy Lube guys wanting to fix it? Next thing you know they will try to stick a cheap oil filter in there.
I disassembled the "loose and jiggly" cap, removed the flapper and reused the cap assembly at the end of the new extended 1/4 inch fuel line, which I attached to the base of the fuse block. I think it looks better than a fuel filter and allows the diff to breathe just fine.
The cooling fan in my '91 comes on only if the engine gets very hot after shutdown. It may not be essential but I feel it does no harm to cool off the exhaust manifold area, even more so if the day is hot. There is a test in the FSM, I think you connect the motor directly to your battery, if it...
Rough idle can be caused by vacuum lines that get hard and brittle with age, they are cheap and easy to fix and replacement line can be purchased just about anywhere. I would start with that mainly because you mention that the truck was used in higher elevations and is now at sea level, so...
If you have a high milage engine and have been using regular dino oil, the seals/gaskets probably have a "protective" layer of old gunk and sludge that actually prevents leaks. If you just switched to synthetic oil, the additional detergency plus the better flowing properties of the oil will...