Map sensor circuit malfunction dtc
#1
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For the next guy who has this issue,
I got a cel, and pulled a map sensor circuit malfunction code. The car ran fine, so it seemed, but I did notice a 20 percent decrease in fuel economy. l looked at the stored data in my obdii reader to see that the map sensor showed 27.2 inhg, with no change due to rpms.
I looked for the map sensor to no avail, but came across a detached vaccuum line to the rear of the engine. It was fixed with a small clamp. There are a few electrical switches attached to the firewall, one of which has a nipple for a vaccuum line. I hooked the line up, and checked the reader data again. The cel reset, and life is good. I guess the switch the vaccuum line hooked up to might be the map sensor. I don't know and don't care......
I got a cel, and pulled a map sensor circuit malfunction code. The car ran fine, so it seemed, but I did notice a 20 percent decrease in fuel economy. l looked at the stored data in my obdii reader to see that the map sensor showed 27.2 inhg, with no change due to rpms.
I looked for the map sensor to no avail, but came across a detached vaccuum line to the rear of the engine. It was fixed with a small clamp. There are a few electrical switches attached to the firewall, one of which has a nipple for a vaccuum line. I hooked the line up, and checked the reader data again. The cel reset, and life is good. I guess the switch the vaccuum line hooked up to might be the map sensor. I don't know and don't care......
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#8
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That Purge Valve has a vacuum line running to the Purge Solenoid that also connects to the Emissions Vapor hoses from the fuel tank cannisters and routes it to the intake.
My question is, how does a proper fuel injection system work without sensing the MAP unless it is phaked in the computer?
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Took me 2 minutes to find the info (Google). https://www.jaguarforums.com/forum/x...sensor-160742/
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