My 90 mj is idling rough

[4sphinx20]

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

[desbennett004]

Cruiser54.com, all the info you need.

 

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[cruiser54]

Don't fire off the parts cannon just yet. 

 

Last time it had new NGK plugs, new wires cap and rotor?

[4sphinx20]

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

[Fernando87mj]

Yes that'll affect it a lot

[Crash]

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.  

[cruiser54]

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!!!!!

[4sphinx20]

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

[cruiser54]

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

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