Hi team,
Apologies for the long winded post here. About to start pulling my hair out and I'm needing some advice.
I've got a 1994 LC, 1FZ-FE. Just recently replaced the engine from an obd2 long block with a recent rebuild.
After a couple hundred miles, I started getting this high pitched noise coming from the engine(bay) it starts around 1800RPM and the frequency changes with higher RPMS. I would say it sounds like the Jetsons or an old VW bug. The sound happens whether its in gear or park
CEL is on for error 71 (EGR)
When the truck starts, it jumps to around 2k RPM but immediately drops to around 800
Recent work -
Removed all belts, no change
flushed the PS, no change
New knock sensor
New temp sensor
Cleaned Throttlebody
Used VAF installed at time of engine installation
New thermostat and water pump
Trying next:
Timing chain tensioner
Cleaning EGR system
Anything else you'd recommend? About to just take it into a shop..
Apologies for the long winded post here. About to start pulling my hair out and I'm needing some advice.
I've got a 1994 LC, 1FZ-FE. Just recently replaced the engine from an obd2 long block with a recent rebuild.
After a couple hundred miles, I started getting this high pitched noise coming from the engine(bay) it starts around 1800RPM and the frequency changes with higher RPMS. I would say it sounds like the Jetsons or an old VW bug. The sound happens whether its in gear or park
CEL is on for error 71 (EGR)
When the truck starts, it jumps to around 2k RPM but immediately drops to around 800
Recent work -
Removed all belts, no change
flushed the PS, no change
New knock sensor
New temp sensor
Cleaned Throttlebody
Used VAF installed at time of engine installation
New thermostat and water pump
Trying next:
Timing chain tensioner
Cleaning EGR system
Anything else you'd recommend? About to just take it into a shop..