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Caster settings 1977 C10
When replacing front end parts I just put whatever shims were there back in. Was usually close enough to drive to an alignment shop. Factory tolerances were all over the place. Have seen vehicles with no shims and others with 3/8" plus. Really need to find a shop that specializes in...- fast 99
- Post #4
- Forum: Suspension, Steering & Brakes
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Have a great Snap On dealer finally
At one point we had Matco, Snap on, Mac and Cornwell all making weekly stops. I tried to buy a little from each but really only needed an occasional specialty tool. Moved to another shop only Snap on came by. He was a real good vendor. Went through my tools every once in a while and replaced... -
Brake Fluid Flush GMT800
Booster failing would cause hard high pedal, suspect master. -
Brake Fluid Flush GMT800
If the excessive travel developed with a full master here are a few possibilities. Am sure there are others. Rear shoes out of adjustment if drum brakes, as suggested swelling brake hose, bad master, loose front wheel bearings causing pad retraction, tight wheel cylinder or caliper. I would do a... -
86 C20 - Climate control not changing position - cable or vacuum operated?
85 has a vacuum supply. However most vehicles will default to defrost if vacuum is lost. -
Rust coating for fill neck
There is a commercial zinc dipping company here that will do small jobs. Items are dipped in rust remover [acid] first then plated. Might try one local to you. or Por 15?- fast 99
- Post #2
- Forum: Tech Discussion
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Help me identify the A/C system in our 1979 Scottsdale
In that era adding AC was quite common. There was a shop near ours that specialized in AC conversions. ARA is one that comes to mind. Appears they are still in business. https://arasourcing.com/- fast 99
- Post #3
- Forum: Electrical & Audio
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1990 TBI misfire/popping exhaust
Those distributor caps can crossfire internally. Sometimes it's not visible. We only use Delphi. More expensive by a lot. This is not a place to buy an economy part.- fast 99
- Post #6
- Forum: TBI & EFI Conversions
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Engine High Pitch Whining
Just to be safe I always bleed the air out. Others here say it isn't necessary. Have seen too many engines air lock. It's not much more work, either take stat out or remove a hose if on intake.- fast 99
- Post #8
- Forum: Tech Discussion
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Engine High Pitch Whining
Water would indicate a possible belt noise. If this is a serpentine belt drive they do not like misalignment. Most of the time it's the PS pulley. Shaft should be flush with pulley. If any "belt dressing" has been applied toss the belt in the garbage, clean all the pulleys with a wire brush...- fast 99
- Post #4
- Forum: Tech Discussion
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Engine High Pitch Whining
Remove belt, noise still there? If gone likely belt misalignment, pulley bearing or water pump. Way we diagnose noises like that is with a stethoscope. HF has them for less than $10. Another possibility is a cavitating PS pump. If that's the case fluid might be foamy.- fast 99
- Post #2
- Forum: Tech Discussion
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87' a/c brackets
If you need to purchase the brackets and compressor might [at least] want to investigate a newer design compressor. Looking back on the truck I have probably would have switched. New R4 compressor I bought took a dump in one season, leaks. Think the Sanden compressors are better in many ways. -
1987 Suburban R10 emissions problem due to modified intake
Hard to tell from the pictures but if TBI, with O2 sensor [not carbed], AIR system only pumps during warm up unless it has a dual bed cat. After system goes into closed loop, additional air injected into exhaust would bias the O2 causing incorrect fuel mix. What I am saying is it might be...- fast 99
- Post #11
- Forum: Tech Discussion
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1987 Suburban R10 emissions problem due to modified intake
Will help to know how clean the exhaust needs to be. What is the emissions limit and vehicles reading.- fast 99
- Post #7
- Forum: Tech Discussion
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Do I restore my AC or?
Many old compressor front seals were designed to leak. Recharges were a fairly common yearly maintenance item. Can't blame the backyard mechanic on this one. Back in the day R12 cost $1 a can. Customers wouldn't fix anything if system held a charge for the season. I stood in basically one place...- fast 99
- Post #16
- Forum: Tech Discussion
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1987 Suburban R10 emissions problem due to modified intake
Is an under hood visual part of the emissions inspection? If all the vehicle needs is being lower than the limits an air pump and cat do wonders on emissions. Here they only did under hood if the vehicle needed a waiver. If everything installed by OEM is required some of it may be difficult to...- fast 99
- Post #4
- Forum: Tech Discussion
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A/C REBUILD w/R-12
It's really not an issue using R12 just need the correct orifice tube, cycling switch and confirm correct oil is in compressor if any. Today's hoses and o rings will be compatible. Agree with previous post on compressor quality. A new R4 lasted a total of 50 hours before it started leaking...- fast 99
- Post #3
- Forum: Introduction
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V2500 frame compatibility and advice.
Flanges are top and bottom horizontal areas. Last frame I replaced used a forklift through the cab with doors off and 4 helpers on the bed. Could also remove seat to reduce weight. Same with bed, remove tailgate. Front end could be removed in pieces or complete only should have help with the...- fast 99
- Post #6
- Forum: Tech Discussion
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V2500 frame compatibility and advice.
Guess repairing depends on how it's going to be used and how long you expect it to last. Any frames we repaired were for shorter periods only. Long enough to replace the vehicle. However, I know some larger [up to class 7] trucks are both shortened and lengthened. They are usually double framed...- fast 99
- Post #4
- Forum: Tech Discussion
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V2500 frame compatibility and advice.
As someone who has dealt with bent and worn out frames, obviously best option is replacement. Depending on what is available in your area, finding a suitable frame might be the biggest hang up. Replacing frames sounds like a huge deal but most vehicles are plug and play because during assembly...- fast 99
- Post #2
- Forum: Tech Discussion
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Front suspension mystery drone
Most of the time failed bearings can be located by running on a hoist or jack stands using a stethoscope.- fast 99
- Post #4
- Forum: Suspension, Steering & Brakes
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Why did GM do this???
Remember frames move and twist around A LOT.- fast 99
- Post #7
- Forum: Tech Discussion
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SBC 400 intermittent lifter tick.
Valve adjustment with hydraulic lifters 3/4 to 1 down turn from zero lash. With each valve closed loosen valve adjustment nut until push rod starts to turn easily with 2 fingers. That should be near zero then an additional 3/4 to 1 turn down. Engine will need to be rotated several times. There...- fast 99
- Post #7
- Forum: Tech Discussion
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SBC 400 intermittent lifter tick.
my 2 c Check valve adjustment first it's possible nut backed off or worn cam/valve train parts to near zero lash. If engine hasn't been maintained ATF might help but I doubt thinner oil would. I know folks have had problems with offshore lifters. If you do decide to replace them buy name...- fast 99
- Post #5
- Forum: Tech Discussion
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SBC 400 intermittent lifter tick.
aerated oil or bad lifter? Like most everything else today lifter quality has fallen.- fast 99
- Post #3
- Forum: Tech Discussion
