My 350 shutting off while driving

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.

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
I installed a new ignition starter switch now I’m having a time figuring out where the gear selecter tie goes
 

Attachments

  • 1B6728E5-C2D9-48CB-8A89-9E83AF345C36.jpeg
    1B6728E5-C2D9-48CB-8A89-9E83AF345C36.jpeg
    144.4 KB · Views: 37
  • 53CB2594-EF11-4A50-9868-70318A8E54E1.jpeg
    53CB2594-EF11-4A50-9868-70318A8E54E1.jpeg
    115 KB · Views: 46

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Socket sizes used 5/8 on steering column 5/16 and 10 mm on ignition switch took me all day u gotta keep Foward pressure wen installing new ignition switch , eliminate the play towards yourself by pushing foward then tighten bolts
 

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Not sure how this tie is supposed to be hooked up . Without the tie hooked up the orange selector won’t move thanks
 

Attachments

  • A5144562-C780-4BF5-8AD3-590B213FE5F3.jpeg
    A5144562-C780-4BF5-8AD3-590B213FE5F3.jpeg
    115 KB · Views: 42

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Ok guys I replaced the ignition starter switch .. so I went for my first test drive went down the highway then it died again as I’m slowing down at the stop light... so it’s gotta be a short from the starter to the battery possibly ? Luckily I managed to crank it back up
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,179
Reaction score
16,010
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
Not sure how this tie is supposed to be hooked up . Without the tie hooked up the orange selector won’t move thanks
There is a tab on the column that moves when you move the shifter. I don't have a pic.
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,179
Reaction score
16,010
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
Ok guys I replaced the ignition starter switch .. so I went for my first test drive went down the highway then it died again as I’m slowing down at the stop light... so it’s gotta be a short from the starter to the battery possibly ? Luckily I managed to crank it back up
Short? I doubt it. An open, yes. I'll bet you're losing power to the distributor. Check your connections on the starter solenoid and dizzy. Inside the dizzy, check your connection to the pickup coil.
 

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
There is a tab on the column that moves when you move the shifter. I don't have a pic.
I fixed the shifter bro.... But it still died on me after 10 min after couple stop lights , luckily was able to get it going again... I wonder how difficult of a job to rip out the wires off the starter and get new ones but for the life of me i cant see where they travel to.
Battery hot travels to starter hot then....?
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
4,060
Reaction score
5,895
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Have you tested the ignition coil. A coil will get hot and fail,then cool and start working again.next time it dies you need to immediately check for 12v at the distributor. If it dies and you have 12v there.we need to test the distributor components.
 

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Have you tested the ignition coil. A coil will get hot and fail,then cool and start working again.next time it dies you need to immediately check for 12v at the distributor. If it dies and you have 12v there.we need to test the distributor components.
 

Attachments

  • EEDA6A1A-C6A7-4047-A37F-8C00BAE80662.jpeg
    EEDA6A1A-C6A7-4047-A37F-8C00BAE80662.jpeg
    183.3 KB · Views: 41
  • DED21302-D728-4073-800B-335A868D345F.jpeg
    DED21302-D728-4073-800B-335A868D345F.jpeg
    136.8 KB · Views: 41

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Ok just got the starter down and removed the shroud . Going to tighten nuts... I wonder how to test the wires ONLY for I suspect conduction may be intermittent on one or more of these wires.
 

Attachments

  • ADEE6293-0E81-4B75-BEE8-C41D6457AFF4.jpeg
    ADEE6293-0E81-4B75-BEE8-C41D6457AFF4.jpeg
    106.9 KB · Views: 43

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Ok a chart
 

Attachments

  • EB440DE1-FD1D-4FC5-84B8-8D673348639D.jpeg
    EB440DE1-FD1D-4FC5-84B8-8D673348639D.jpeg
    138.2 KB · Views: 48

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
I’m thinking that I have an intermittent open circuit.

The chart I posted seems incorrect be cause battery hot terminal seems to go to the starter and the alternator hot terminal
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,179
Reaction score
16,010
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
That is correct. There also should be a wire going to the distribution block on the firewall.
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
4,060
Reaction score
5,895
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Sorry didn't read close enough,you have tbi with a divorced coil you to check for spark and, 12v to the pink wire A.S.A.P after it dies. If it were mine this exactly how I would do it as soon as it died I spray carb cleaner down the tbi. And try to start it no start? We know it's probably not a fuel problem. I'd check for spark to the coil wire,no spark see if the coil has power coil has power,we've isolated the problem to the distributor or coil. No power to the coil we have a bad wire or switch. If you do the above we will be real close to knowing what's wrong.
 

Hugomartin

Banned
Joined
Jul 23, 2021
Posts
256
Reaction score
71
Location
Nc
First Name
Hugo
Truck Year
1987
Truck Model
V20 3/4 ton 5.7 350 suburban
Engine Size
350
Sorry didn't read close enough,you have tbi with a divorced coil you to check for spark and, 12v to the pink wire A.S.A.P after it dies. If it were mine this exactly how I would do it as soon as it died I spray carb cleaner down the tbi. And try to start it no start? We know it's probably not a fuel problem. I'd check for spark to the coil wire,no spark see if the coil has power coil has power,we've isolated the problem to the distributor or coil. No power to the coil we have a bad wire or switch. If you do the above we will be real close to knowing what's wrong.
I’m able to start it up after it dies
 

Forum statistics

Threads
42,087
Posts
908,638
Members
33,560
Latest member
bgeise
Top