Vince's TBI woes, progressive revelations, and tbi mods.

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Vbb199

B-rate Hillbilly Customs
Joined
Jan 12, 2018
Posts
9,108
Reaction score
15,456
Location
Salisbury NC
First Name
Vince
Truck Year
89, 79
Truck Model
89 Suburban R1500, 79 C10
Engine Size
350, 502
Still havent gotten to drive the thing yet, ive been temporarily driving another vehicle , and with work and my current situation, its hard to make time, and i havent wanted to take another gamble and have it fall apart on me while going to my destination.


...but ive been revving it up and letting it run here for 10 minutes,
No tach bouncing, no misfiring, and no breaking up at 3000 , no matter the throttle position. Also it goes beyond 4500 which is interesting. I recall once upon a time it kinda fell on its ass at 4500. Not that it makes much power there.

This DEFINITELY made a change of the trucks.operatiom because everything ive done thus far showed me i was fixing the WRONG thing after the truck had ran for 5 minutes. It'd go back to jumping around, stalling, misfiring, bouncing the tach, etc




Let this be a lesson for all future TBI readers, a functional ICM isnt a good ICM !!!
 

Vbb199

B-rate Hillbilly Customs
Joined
Jan 12, 2018
Posts
9,108
Reaction score
15,456
Location
Salisbury NC
First Name
Vince
Truck Year
89, 79
Truck Model
89 Suburban R1500, 79 C10
Engine Size
350, 502
read what i wrote above about the distributor magnets and using a timing light , it might show you saomething about your issue. also read about the IAC counts.


By the way i wasnt ignoring you but 2 pages ago i had the timing light out, i also performed a IAC reset , and also just replaced and reset the IAC

That was one of the things i tried before i ever posted on the forum searching for help.
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,693
Reaction score
6,875
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
By the way i wasnt ignoring you but 2 pages ago i had the timing light out, i also performed a IAC reset , and also just replaced and reset the IAC

That was one of the things i tried before i ever posted on the forum searching for help.
so when you do a throttle blip test where you jab the throttle quickly numerous times, the counts will be back where they were before that?
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,621
Reaction score
28,870
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Final update, hopefully for a while.

I took it on a drive and beat on it some, got it hot.
Not even the slightest hint of issues

Nice!

I wish I would have been more adamant about it before. But it was just a hunch about the ignition module... I didn't want to pester you about it and have it change nothing, lol.
 

Vbb199

B-rate Hillbilly Customs
Joined
Jan 12, 2018
Posts
9,108
Reaction score
15,456
Location
Salisbury NC
First Name
Vince
Truck Year
89, 79
Truck Model
89 Suburban R1500, 79 C10
Engine Size
350, 502
Nice!

I wish I would have been more adamant about it before. But it was just a hunch about the ignition module... I didn't want to pester you about it and have it change nothing, lol.

Man, its been running great since that. Smh

What a debacle. But at least i got a lot of new parts under the hood now.
 

Latest posts

Forum statistics

Threads
44,416
Posts
957,137
Members
36,755
Latest member
square-up
Top