crumbscomanche Posted January 5, 2018 Share Posted January 5, 2018 Hi all, I put this simple sketch together for the engine bay of my '91 4.0. It's very basic and it will be common knowledge to most people, but these sorts of diagrams really helped me out when I started working on my JK. If anything needs to be changed or should be added let me know happy to do more if it helps out anyone. Edit: thanks @Minuit for the MAP Sensor, AC Expansion Valve and ECU suggestions Link to comment Share on other sites More sharing options...
Minuit Posted January 6, 2018 Share Posted January 6, 2018 A few things you might add: The ECU is the black box on the far right next to the air intake. (for HOs only, the Renix trucks have it inside) The A/C expansion valve is the metal rectangle next to the heater core pipes. The MAP sensor is on the firewall to the right of the "hump" Link to comment Share on other sites More sharing options...
crumbscomanche Posted January 8, 2018 Author Share Posted January 8, 2018 On 1/6/2018 at 7:27 AM, Minuit said: A few things you might add: The ECU is the black box on the far right next to the air intake. (for HOs only, the Renix trucks have it inside) The A/C expansion valve is the metal rectangle next to the heater core pipes. The MAP sensor is on the firewall to the right of the "hump" Will get this done -- sorry for the delay! The MAP sensor has the green plastic, correct? And the A/C expansion valve I imagine is the box covered in mud to the left of the firewall? haha Link to comment Share on other sites More sharing options...
Minuit Posted January 8, 2018 Share Posted January 8, 2018 Yes to both. Link to comment Share on other sites More sharing options...
crumbscomanche Posted January 8, 2018 Author Share Posted January 8, 2018 1 hour ago, Minuit said: Yes to both. done. thanks for the feedback Link to comment Share on other sites More sharing options...
Minuit Posted January 8, 2018 Share Posted January 8, 2018 27 minutes ago, crumbscomanche said: done. thanks for the feedback Link to comment Share on other sites More sharing options...
Pete M Posted February 5, 2018 Share Posted February 5, 2018 once we get our photo-uploading code squared away, I think we need an official "jeep basics" thread for newbies. Link to comment Share on other sites More sharing options...
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