Hey y'all. My 1989 Dodge Spirit is running pretty poorly (a413, stock tune, Garrett T2, intercooler). It idles below 500rpm when warmed up. And she just seems...super slow...like TBI slow.
I went through the minimopar trouble shooting guide and checked the TPS, replaced the speed sensor (but the speedo is still dancing), and replaced the AIS. I did try to reset the AIS, but it never jumped to 3000rpm when I introduced a large vacuum leak
from minimopar
If you do not have a scan tool, you can use this method (special thanks to Steve Calder for the vacuum leak idea):
- Induce a large vacuum leak by disconnecting the brake booster line. This will cause the engine speed to increase greatly (around 3000 RPM or more).
- The engine speed will drop as the computer tries to compensate by closing the AIS valve.
- When the engine speed stops going down (give it a minute or so), disconnect the connector on the AIS motor. With luck, the AIS valve is now closed. This will also set a fault code 25.
- Reconnect the brake booster vacuum line (the engine may stall, so open the throttle a bit).
And these are the codes I was dealing with:
12 caused by disconnecting my battery. I'm sure it'll go away
24 (TPS) - checked TPS with MPScan...totally fine
45 (turbo boost limit exceeded) - I did this setting the up the boost controller...should I still be worried?
52 (bad O2 sensor) - replaced the O2 sensor
55 - end of codes
Is there something that I'm missing that would trigger all of these codes but be ONE problem?