1991 silverado cold start problems
#1
1991 silverado cold start problems
Truck is a 91 350 K1500
So i just bought this pickup and it wasnt running, my mechanic ended up replacing the spark plugs, battery, distributor, spark plug wires, coolant temp sensor and set the timing.
It will run damn near perfect after it has been warmed up, you can even turn it off for a few hours and restart it and it runs great
If you let it sit over night and start it in the morning, it runs very crappy.
Very rough idle with RPMs jumping around from 500-1500 and just backfiring, etc, if you give it some gas and keep it chugging for a couple minutes until it warms up it runs great again
Has anybody else had these type of issues before? Want to try and figure out what it is on my own before i send it back to my mechanic
I was thinking maybe the TPS or EGR sticking open, what do you guys think?
So i just bought this pickup and it wasnt running, my mechanic ended up replacing the spark plugs, battery, distributor, spark plug wires, coolant temp sensor and set the timing.
It will run damn near perfect after it has been warmed up, you can even turn it off for a few hours and restart it and it runs great
If you let it sit over night and start it in the morning, it runs very crappy.
Very rough idle with RPMs jumping around from 500-1500 and just backfiring, etc, if you give it some gas and keep it chugging for a couple minutes until it warms up it runs great again
Has anybody else had these type of issues before? Want to try and figure out what it is on my own before i send it back to my mechanic
I was thinking maybe the TPS or EGR sticking open, what do you guys think?
#3
ok i will have to look into this
just out of curiosity, if it was a fuel pump issue would i see problems after its warmed up?
when its warmed up i have absolutely no issues, drives like new, no loss of power with acceleration or anything
just out of curiosity, if it was a fuel pump issue would i see problems after its warmed up?
when its warmed up i have absolutely no issues, drives like new, no loss of power with acceleration or anything
#4
It's a TBI..right?
Truck is a 91 350 K1500
So i just bought this pickup and it wasnt running, my mechanic ended up replacing the spark plugs, battery, distributor, spark plug wires, coolant temp sensor and set the timing.
It will run damn near perfect after it has been warmed up, you can even turn it off for a few hours and restart it and it runs great
If you let it sit over night and start it in the morning, it runs very crappy.
Very rough idle with RPMs jumping around from 500-1500 and just backfiring, etc, if you give it some gas and keep it chugging for a couple minutes until it warms up it runs great again
Has anybody else had these type of issues before? Want to try and figure out what it is on my own before i send it back to my mechanic
I was thinking maybe the TPS or EGR sticking open, what do you guys think?
So i just bought this pickup and it wasnt running, my mechanic ended up replacing the spark plugs, battery, distributor, spark plug wires, coolant temp sensor and set the timing.
It will run damn near perfect after it has been warmed up, you can even turn it off for a few hours and restart it and it runs great
If you let it sit over night and start it in the morning, it runs very crappy.
Very rough idle with RPMs jumping around from 500-1500 and just backfiring, etc, if you give it some gas and keep it chugging for a couple minutes until it warms up it runs great again
Has anybody else had these type of issues before? Want to try and figure out what it is on my own before i send it back to my mechanic
I was thinking maybe the TPS or EGR sticking open, what do you guys think?
#5
check ( just replace - they are only $25) the IAC idle air control located on the left side of the throttle body. Also check the engine thermostat sensor. This is #1 most likely
Last edited by SmokeyCity; December 26th, 2014 at 2:09 PM.
#6
Is the engine thermostat sensor the same as the coolant temp sensor? because my mechanic did replace that
Last edited by jjstandardz; December 26th, 2014 at 4:54 PM.
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