Quote:
Originally Posted by drmiller100
DC ampereage is load related. What this means is the electric pump for the PS won't take full amperage unless you are in a parking lot going very slow.
in that case, the battery will help you for the few seconds needed.
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That makes sense, thank you for the feedback.
I still may go with the MR2's steering ECU, which incorporates a PWM controller that varies amperage output by vehicle speed, to give the Sporty's stock wiring some breathing room, as this is the daily driver.
Almost all the material I've found so far for the MR2 electric steering pump install is a (direct) hookup running at full amp. draw, so alternator life is a concern - a high-output (direct replacement) alternator is costly for the Sportage, $250-300, I'm hoping I can procure the the MR2 pump & controller for the same, or less.
I found this site:
Toyota MR2 Power Steering System
that gives excellent info. on the ECU pinouts & hookup, very thankful to John Grigg for posting it.