Eric Hysteric wrote:
I think, the part number on the vacuumthing is 3738591 and thanks for the anserws about the oem wire and the smog equipment.
I came up with EGR vacuum solenoid for that part number. (I'd double check, across multiple sources, because I'm not entirely confident of the answer I got ... or the source.)
If that's what it is, I'd definitely look into getting it reconnected properly. EGR (exhaust gas recirculation) is an early form of 'smog' reduction. That's precisely why people tend to disconnect or disable EGR systems, on the assumption it has an adverse impact on performance. (The notorious Lean Burn system, along with a few other 'innovations,' went a long ways towards establishing that assumption.)
The opposite is true. A disabled or malfunctioning EGR system will decrease engine performance, especially in terms of fuel economy. (There may be other factors involved but bringing the EGR back online does tend to improve fuel economy.)
All of this may go out the window if you do the LPG conversion. (LPG conversion is 'new ground' for me so I can't be certain.)
And ... you're more than welcome for the answers.
