4sphinx20 Posted November 27, 2016 Share Posted November 27, 2016 I have a 90 mj and when I start it it has a rough idle and kind of a rumble when I open the throttle. I cleaned the throttle body and that helped a little bit. To me it seems like it could be a sensor or valve within the vacuum system...i was thinking possibly the map sensor or egr valve(or solenoid). I wanna try to figure out the problem before I buy parts, because I'm not made of money. Any help is very appreciated. Thanks Link to comment Share on other sites More sharing options...
desbennett004 Posted November 27, 2016 Share Posted November 27, 2016 Cruiser54.com, all the info you need. Sent from my SM-N900W8 using Tapatalk Link to comment Share on other sites More sharing options...
cruiser54 Posted November 28, 2016 Share Posted November 28, 2016 Don't fire off the parts cannon just yet. Last time it had new NGK plugs, new wires cap and rotor? Link to comment Share on other sites More sharing options...
4sphinx20 Posted November 29, 2016 Author Share Posted November 29, 2016 New plugs and wires...maybe a year ago and rotor at least 2 years New plugs and wires...maybe a year ago and rotor at least 2 years ago. I did notice today that the little plastic tube from the throttle body to the map sensor is snapped...could that little guy have something to do with it Link to comment Share on other sites More sharing options...
Fernando87mj Posted November 29, 2016 Share Posted November 29, 2016 Yes that'll affect it a lot Link to comment Share on other sites More sharing options...
Crash Posted November 29, 2016 Share Posted November 29, 2016 New plugs and wires...maybe a year ago and rotor at least 2 years New plugs and wires...maybe a year ago and rotor at least 2 years ago. I did notice today that the little plastic tube from the throttle body to the map sensor is snapped...could that little guy have something to do with it Repair the vac line from MAP to TB, should at least help your issue. A small piece of vac hose can be used to connect the hard plastic together. Link to comment Share on other sites More sharing options...
cruiser54 Posted November 29, 2016 Share Posted November 29, 2016 New plugs and wires...maybe a year ago and rotor at least 2 years New plugs and wires...maybe a year ago and rotor at least 2 years ago. I did notice today that the little plastic tube from the throttle body to the map sensor is snapped...could that little guy have something to do with it ABSOLUTELY!!!!! Link to comment Share on other sites More sharing options...
4sphinx20 Posted November 30, 2016 Author Share Posted November 30, 2016 Thanks a lot. I got the vac line put back together and it fixed the rough idle for the most part, but now it has a high idle. Just one thing after another!Haha hopefully it's just little things Link to comment Share on other sites More sharing options...
cruiser54 Posted November 30, 2016 Share Posted November 30, 2016 Thanks a lot. I got the vac line put back together and it fixed the rough idle for the most part, but now it has a high idle. Just one thing after another!Haha hopefully it's just little things Go to www.cruiser54.com and complete Tips 1,3,4, and 5 next. Link to comment Share on other sites More sharing options...
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