Manche757 Posted October 1, 2019 Share Posted October 1, 2019 87 MJ, 4.0, 5 speed. Going to swap the instrument panel that has indicator lights for one that has gauges. Can someone that has purchased the right sensors in the last year, recommend ones to get? Ones to avoid? 89 MJ, 4.0 5 speed. Going to replace blower motor and fan. Can someone that purchased those in the last year, recommend ones to get? Ones to avoid? A year ago, the fan on the 87 was replaced and it does not have the high speed that the 89 has. Any ideas about that? Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 1, 2019 Share Posted October 1, 2019 MoPar currently has some sensors left. Link to comment Share on other sites More sharing options...
Pete M Posted October 1, 2019 Share Posted October 1, 2019 the speeds are controlled by the switch on teh dash that's run through a resistor bank inside the ducting above the passengers feet. but usually a bad resistor pack results in only highspeed, not everything but highspeed. Link to comment Share on other sites More sharing options...
gogmorgo Posted October 1, 2019 Share Posted October 1, 2019 I'd be looking at the fan switch on that, could easily be a poor contact in it. That said I've seen failed fan speed resistor packs in other applications where the resistive coil untwisted itself and shorted against other coils, leading to some pretty strange behaviours. It's worth the five minutes it takes to pull it out and have a look at it. Link to comment Share on other sites More sharing options...
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