Dammerung Posted August 29, 2020 Share Posted August 29, 2020 Okay, with number 1, I need to have put up some background. I bought NickInTimeDesign’s engine monitor because I wanted to make sure my truck was in good shape. Apparently my engine is fine, except that the exhaust runs both rich and lean constantly and an ECU code for an open EGR Solenoid is up. What do I need to do to fix both of these? Are they related? Or is the monitor just screwing with me. Number 2 - and this one has been an issue since I got the truck - whenever I shift into gear, my truck kind of bogs. It sometimes starts dropping below the 750 threshold into the 400 range. It sometimes even does it in park. However, reverse is the worst, as when I’m in that gear, my RPMs start to pulse between 400 and 700. It doesn’t always happen when I shift into gear though. What could be the cause for this? Is it potentially related to the question above? 1988 Pioneer, 4.0 Liter, Aw4 Transmission Link to comment Share on other sites More sharing options...
jdog Posted August 29, 2020 Share Posted August 29, 2020 02 sensor sounds normal, they are supposed to go lean to rich to lean again. number 2 what have you done with the iac? have you cleaned it? have you done any of cruisers tips? Link to comment Share on other sites More sharing options...
eaglescout526 Posted August 29, 2020 Share Posted August 29, 2020 Have you tested any of your EGR stuffs to see if its just being stuck open? Link to comment Share on other sites More sharing options...
SoCalManche Posted August 29, 2020 Share Posted August 29, 2020 4 hours ago, Dammerung said: ECU code for an open EGR Solenoid is up. How long of a drive did you do when monitoring? I suppose I need to familiarize myself with how the EGR is supposed to operate when functioning properly, but I recently did a smog test and absolutely crushed the test, so I'm assuming mine is operating at optimal capacity. I say that because when I monitored my EGR via REM, I recall seeing it staying open and closed for long periods of time. Link to comment Share on other sites More sharing options...
Dammerung Posted August 29, 2020 Author Share Posted August 29, 2020 02 sensor sounds normal, they are supposed to go lean to rich to lean again. number 2 what have you done with the iac? have you cleaned it? have you done any of cruisers tips? I fully replaced the unit with an aftermarket one, and I’ve done some of cruiser’s tips, but I’ll have to go back and look to remember the ones I did.Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
omega_rugal Posted August 30, 2020 Share Posted August 30, 2020 disconnect the EGR, see what happens Link to comment Share on other sites More sharing options...
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