Porsche 928 Ignition Control Unit Replacement

Shows replacement and thermal paste application for Porsche 928 Ignition Switch Units. Also may be found in some Porsche 911 and 944, Saab and Volvo model years.
Porsche Part 92860270601
Bosch Part 0 227 100 124 (shown)
Descriptions: Ignition Control, Module, Switch, Unit
Arctic Silver MX-4 thermal paste

[@williammclaughlin2606]

Was there any increased performance or any difference after replacement?

[@markfranke8326]

Thanks for watching! Yes, qualitatively it feels smoother, through the range, and cold to hot. Both of the original ICUs were working; however, based on the difference noted I suspect that at least one of the original installations may have been getting flakey or tired. Initially I planned to refresh just the thermal paste, but then decided to refresh the ICUs. They were looking a bit crusty, and new ones were relatively inexpensive.

[@williammclaughlin2606]

@@markfranke8326 I plan to do mine, as well as do my coils. I just fixed the icu on a Chevy cobalt and the owner told me it’s never driven that fast ever. I’ve been trying to find any way to clean up the performance on my sharks

[@williammclaughlin2606]

@@markfranke8326 also thank you for posting your blower motor video. It helped me greatly to fix my ac system.
Additionally the hvac relay fix as well. I owe you one

[@markfranke8326]

@@williammclaughlin2606 Great, glad if the vids can be of help!

[@markfranke8326]

@@williammclaughlin2606 The 928 engines are very smooth, and pull quite strong when in shape!