p1174 and p1516 codes
#1
p1174 and p1516 codes
driving home tonight these codes popped up. ran fine, coolant temp is 196, outside temp is 6 degrees. I'm thinking corroded connectors?? maybe able to take a peek in the morning. should be about 10 above (?)
#2
Possible causes P1174
Clogged Fuel Injectors
Faulty Oxygen sensor
Ignition problem
Fuel injection problem
Engine mechanical condition
Possible causes P1516
Faulty Throttle Actuator Control (TAC) module
Throttle Actuator Control (TAC) module harness is open or shorted
Throttle Actuator Control (TAC) module circuit poor electrical connection
Check Throttle Actuator Control (TAC) module connector for water
Binding or bent throttle plate-failed throttle body
Check the wiring harnesses for damaged connectors bent pins, corrosion.
Clogged Fuel Injectors
Faulty Oxygen sensor
Ignition problem
Fuel injection problem
Engine mechanical condition
Possible causes P1516
Faulty Throttle Actuator Control (TAC) module
Throttle Actuator Control (TAC) module harness is open or shorted
Throttle Actuator Control (TAC) module circuit poor electrical connection
Check Throttle Actuator Control (TAC) module connector for water
Binding or bent throttle plate-failed throttle body
Check the wiring harnesses for damaged connectors bent pins, corrosion.
#3
P1516 inhibits P1174 from running. So the throttle is the problem.
A low voltage condition may set P1516.
I would start with battery voltage then inspect the throttle harness connector.
Look at the butterfly, these are bad:
is it not in the rest position
is it binding
is it moving freely without resistance
is it filthy
A low voltage condition may set P1516.
I would start with battery voltage then inspect the throttle harness connector.
Look at the butterfly, these are bad:
is it not in the rest position
is it binding
is it moving freely without resistance
is it filthy
#4
And remember, do not move that throttle body butterfly plate manually! The plastic gears will strip and there’s no fixing that! Just replace the throttle body!
Perhaps hellshotrod has one he can send you, send him a PM
Perhaps hellshotrod has one he can send you, send him a PM
#5
good to know! I' ll see what I can see. Battery was installed 7 months ago (from the receipt) only 7 degrees out so I only checked the electrical connector, nothing bent but I did spray it down with contact cleaner. more when it warms up outside. seems intermittant so I would gues electrical.