Pyral
Member
I mostly finished my 3rz miniheader swap and I turned the engine over for the first time and immediately noticed that my RPM at idle had more that doubled from ~700 to around 2000 rpm. I only had the engine on for 6 seconds because I didn't want a hot engine, but I also noted that the rpm was relatively steady.
I made sure that all the vacuum hoses were put back and that all the electrical connectors were plugged in. When I was working I made sure that the part of the airbox with the maf sensor had a rubber glove stretched over the opening so that nothing could come into contact with it.
Now there are some issues that could be causing the high idle. The 2 cables that run to the cruise control module cross over each other (seen here) for some reason, it was always arranged like this on my 4runner but I see that other 3rz 4runners don't have this strange setup. This causes the cables to have a less direct path.
Another possibility is that the bracket that holds the airtube in place (seen here) is missing on my 4runner. I didn't encounter one when I was removing my old manifold, the bracket was just gone. An important detail about this stretch of of pipe is that it also has a bracket coming off of it that helps hold the throttle cables in place, and that now appears to be sitting a bit lower.
I'm pretty sure my throttle cable is failing to completely shut the butterfly valve. Is there any way I can lubricate the throttle cable so that it doesn't bind so easily?
What else should I check?
(PS yesterday when I drove my sister to work I forgot that I had set my phone down on the engine when I was working on it the night before, so I wont be able to take photos unfortunately :rip
I made sure that all the vacuum hoses were put back and that all the electrical connectors were plugged in. When I was working I made sure that the part of the airbox with the maf sensor had a rubber glove stretched over the opening so that nothing could come into contact with it.
Now there are some issues that could be causing the high idle. The 2 cables that run to the cruise control module cross over each other (seen here) for some reason, it was always arranged like this on my 4runner but I see that other 3rz 4runners don't have this strange setup. This causes the cables to have a less direct path.
Another possibility is that the bracket that holds the airtube in place (seen here) is missing on my 4runner. I didn't encounter one when I was removing my old manifold, the bracket was just gone. An important detail about this stretch of of pipe is that it also has a bracket coming off of it that helps hold the throttle cables in place, and that now appears to be sitting a bit lower.
I'm pretty sure my throttle cable is failing to completely shut the butterfly valve. Is there any way I can lubricate the throttle cable so that it doesn't bind so easily?
What else should I check?
(PS yesterday when I drove my sister to work I forgot that I had set my phone down on the engine when I was working on it the night before, so I wont be able to take photos unfortunately :rip
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