K5Blazerboy87
Full Access Member
- Joined
- May 6, 2016
- Posts
- 83
- Reaction score
- 3
- Location
- Tacoma Wa
- First Name
- Kyle
- Truck Year
- 1987
- Truck Model
- K5 Blazer Silverado
- Engine Size
- 350
hi guys im having issues with my 350 in my k5 i recently replaced my 02 sensor, my iac valve and connector cause i was told it was bad. its doing same thing before i took it in now its cold blooded in morning it always used to fire right up never had to give it gas now i have to and then after it warms up and i drive it for a bit my engine light pops on and idle goes weird just doesn't run right. took paper clip trick to it i popped code 42 4 flashes pause 2 flashes. HEI module ? it says i recently replaced my igntion control module so idk can anyone give me some info.