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Good info. Thanks! Small temporary victory...while reassembling the head to the stem, I squirted a small amount of denatured alcohol into the vac inlet pipe and shook it around a bit. Re-installed it and fired it up. Now it would fluctuate/bounce from 12 to 20+. Vacuum reading OUT of the vacuum...

Thanks for the info Just called on both. Despite what their website shows, summit is out of stock. Estimated restock shows 10/23 but they cant confirm that even. Advanced doesn't actually have any either. Just the borg warner unit in their ABQ warehouse @$260

Do you have any pics of the inside? I like to "autopsy" my old components to see how they function. I don't want to cut mine open yet, but I'm curious as to what the valves inside look like. I'm wondering if they are just stuck preventing it from holding steady vacuum. Maybe something just a...

Cool. Let me know. Sent from my SM-N910P using Tapatalk

Yeah, i checked for the adjuster screw inside the modulator port before I installed it. None on this one. Its good to know that the pump should be providing steady vacuum. That makes sense as the choppy vacuum cant be very useful. Sent from my SM-N910P using Tapatalk

I have the pump removed at the moment. Checking it for any obvious damage/malfunctions. If you could hook up a vacuum gauge and see if you get the same result mine has, that would help to determine if mine is normal, or not.

I didn't put my finger to it. I attached my vacuum gauge. The needle oscillated rapidly and completely with each stroke of the diaphragm. No steady reading whatsoever. Each stroke got a full needle sweep. https://www.youtube.com/watch?v=geBJdWYXaCI

Been searching the archives all weekend. My M1009 has the standard issue late/hard shifts. Per forum advice, Replaced all (dry rotted,but not obviously leaking)vacuum tubing. Replaced the vacuum modulator on the trans with a NOS ACdelco part. Vacuum Tubes on proper ports. Lower to pump, upper...

Thanks for the suggestions, guys. Thing is I really like the look of these tires in particular. I just got off the phone with tirerack sales guy...he found a stash of them in Louisiana...even though their website says out of stock. So I dropped the hammer on a set for $630 shipped! Should have...

Well...as far as a bill of sale from the guy, I'd google search "vehicle bill of sale forms" or similar. You can find one you like, or is recommended for either state, and copy or print a blank form and send it to the seller to fill out and send with the truck/driver. That is where I'd start...

It seems that adding the mechanical temp gauge to the same plate that the GEN gauge is in grounds the plate with the capillary tube to the engine block causing the GEN gauge to come alive. When I remove the temp gauge from touching the plate, the GEN gauge turns off. I wonder if that means that...

Man...I think I just missed the boat on getting a set of my favorite tires. Yokohama Geolandar M/T plus in 31x10.50r15 The tires on my M1009 are from 2005 and dry rotted. I'm staying with stock size and was planning on keeping the issued tread style. On many of my other 4x4s, I've run the...

Finally a nice day. Less than triple digits. Got a lot done. New belts. New hoses. New thermostat. New fan clutch. New fuel filter. Re-mounted the PO installed mechanical temperature gauge from under the dash to a new plate in the dash with the Gen gauge. Cleaned the idiot light...

I just ordered a direct replacement. Dorman p/n 603-101 Off ebay for 20 dollars shipped Sent from my SM-N910P using Tapatalk

New turn/tail sockets and bulbs front and rear. No trailer socket/pintle mount at this time. There are 2 three prong weatherpac connectors hanging loose in the middle where the pintle mount was. May be for the missing trailer plug? Cleaning grounds as I find them. Did the two at the taillights...

Successfully installed the Doghead Relay Mod. Successfully adjusted my vacuum valve to lower my shift points Still have a gremlin in the turn signal/brake lights. Got everything working statically, but just noticed the turn signal stops flashing with brake application :mad:

As a former Chevrolet dealer tech, and test driver at Toyota's Desert Proving Grounds, I agree that the factory puts a lot of resources toward ride and handling with safety and longevity in mind. That being said, they usually take the optimum for performance offroad and "Nerf it" one notch...

I read your earlier post after searching "motor mounts" and took your advice and went with the energy suspension units. I should be installing them this coming Friday. My past experience with substandard replacement offerings seems to be similar to yours.

Like has been mentioned, these trucks actually have a reverse arch in the front springs. Looking at the overall stance, your ride height isn't off much from new stock. I also agree with the majority that lifting these trucks isn't necessary. The blazer is pretty capable as is. I would work...

Hey Guys! Taking some time off from the wrangler forums since I just picked up a 1986 M1009 from a Vietnam Vet here in AZ. He got it out of florida with ~2500 miles. I got it with 14000 miles on it. Running great and shifting late. Look forward to collecting the few missing pieces and restoring...