same trouble with new problem

old_blue

15 Year Member
Nov 3, 2003
1,783
282
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stock 88 coupe, bypassed smog pump, mac exhaust. o/r bassani x pipe.

car has a crappy throttle response. cant chirp into second gear at all.major issue is every now and again when I am on the freeway 70-75 mph the car dies for a second and comes back (being in gear the car push starts itself)

yesterday the same thing happend only this time when it fired back up it felt like only half the cylinders were working. I could smell a lot of unburnt fuel. I pulled over and it sounded like it had a huge miss or only half the cylinders were working. I shut it off and turned it back on. everything back to normal. kinda at a loss. only code I get is 22 which I cant find the issue. I ran all the test given by jrichter and everything checks out. I even replaced the bao sensor and still have code 22. I guess next is to run a KOER test and see if any codes pop uo.

it seems like it is an ignition issue. I replaced all the plugs, wires, cap and rotor....


still at a loss, anyone else run into this??
 
The code 22 will kill your performance. Somewhere you have an electrical gremlin that is going to take some time and effort to find.
 
In responce to your PM...

Vacuum leaks can do a number on performance, so here's a vacuum diagram...

Diagram courtesy of Tmoss & Stang&2birds
88Stang5.0Vacuum.gif



See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Engine Information Everyone should bookmark this site.


Ignition switch wiring
http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

Fuel, alternator, A/C and ignition wiring
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for94-95 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/94-95_5.0_EEC_Wiring_Diagram.gif

Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pinout
http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif