7M-GTE Coolant/Vacuum Line Routing - Missed Coolant Line to IAC

Coolingbeginner✓ OP Confirmed

Problem

During a 7M-GTE engine build with the motor and car at separate locations, the builder could not identify where coolant and vacuum lines on the intake manifold connect, resulting in a missed coolant line.

Unidentified vacuum hose on top of intake manifoldUnidentified coolant line on lower intake manifoldMissed coolant line connection during engine assembly

Root Cause

A soft coolant line running from the lower intake manifold up through the intake to the idle air control (IAC) unit or throttle body was missed during reassembly, likely because the engine was being built at a separate location from the car.

Confidence

Low confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted July 2021 on SupraForums.com