Reply to "Replaced radiator, now the engine is running hotter during stop and go driving"

Most of the Fan companies recommend a pull configuration and have stated that a pull style fan with a shroud is more efficient than a push style fan. This is why the MAJORITY of radiator fans you will find are in a pull through configuration. Almost every single Ron Davis Radiator is configured as a pull through. They do every motorsport on the planet including NASCAR.

I suspect your car runs cooler with the pusher fans on, simply because of the additional airflow of all three fans.

For an accurate test, you would need to run with a single or dual pusher fan ONLY. Record the results. Then run with the same single or dual fans but in a puller configuration and record the results.

The proper designed puller configuration with the proper shroud is the desired configuration. HOWEVER, if there isn't enough room for a good puller configuration, then a good pusher configuration may indeed win...