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Matt69olds's latest activity
Matt69olds
replied to the thread
Th400 important question.
.
There are certain combinations of pump halfs (meaning the COVER and PUMP) but complete pumps can interchange. There are also certain...
May 12, 2025
Matt69olds
replied to the thread
To Do List - Advice?
.
The transmission should be on full time manifold vacuum. Don’t mess with the modulator until the vaccum lines are sorted out. I...
May 10, 2025
Matt69olds
replied to the thread
High oil pressure after replacing pump
.
I personally wouldn’t worry about the pressure until it gets entirely too low, or starts blowing off oil filters. There are lots of...
Apr 29, 2025
Matt69olds
replied to the thread
backfire under wide open throttle
.
Put a test light on the tach terminal, ignition on. Does the light glow? If so, the distributor has power, and the primary side of the...
Apr 29, 2025
Matt69olds
replied to the thread
Alt putting out 17.4 volts. NOT GOOD right?
.
If your reading 14.2 at the battery, but 17 at the alternator, then you are losing 3 volts in the charge wire. Either it’s severely...
Apr 29, 2025
Matt69olds
replied to the thread
80' fuse box diagram,,,,,
.
Before doing anything, push and pull the hazard switch a few times. Sometimes that cleans the contacts and gets troublesome lights...
Apr 29, 2025
Matt69olds
replied to the thread
Custom drive shaft.
.
I just had a driveshaft built for my son’s 92 Yukon. Same thing, we just installed a 4 inch lift. Even though there was no mention of...
Apr 22, 2025
Matt69olds
replied to the thread
Do I restore my AC or?
.
Is the system completely empty? If it still has a partial charge, you can rest assured the system doesn’t have a major component...
Apr 22, 2025
Matt69olds
replied to the thread
Battery cable recommendations.
.
Be careful using welding cable. While it will definitely tolerate the current, the insulation isn’t as forgiving with oil. Find a...
Apr 22, 2025
Matt69olds
replied to the thread
TH350 oil level, engine off
.
Here is a hydraulic schematic from a service manual. As you can see, line pressure comes out of the pump, and tee into the pressure...
Apr 22, 2025
Matt69olds
replied to the thread
TH350 oil level, engine off
.
Installing a temp gauge in the case is useless, there is no fluid flow. All you will read is the temperature of the transmission case...
Apr 20, 2025
Matt69olds
reacted to
Ricko1966's post
in the thread
Power loss with aggressive acceleration
with
Like
.
That's horrible advice. That's the kinda crap hack mechanics do. Let's just change parts until something works. Well changing parts at...
Apr 16, 2025
Matt69olds
reacted to
Ricko1966's post
in the thread
Slow cranking when trying to start
with
Like
.
Do a volt drop test,engine to battery negative post and battery positive to starter positive. Volt drop turn your meter to voltage,put...
Apr 16, 2025
Matt69olds
replied to the thread
Modified engine crewcab gas mileage?
.
Not too many people understand lean mixtures at cruise is no big deal. Everyone freaks out thinking they are going to melts pistons or...
Apr 16, 2025
Matt69olds
replied to the thread
I’m pretty pissed!!
.
You are absolutely correct, I did bring some of it on myself. I made several mistakes. Mistake number 1: reading the instructions...
Apr 16, 2025
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