key code 27 on my project xj
11-13-2010, 10:20 PM
#1
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Model: Cherokee
key code 27 on my project xj
i finally got the thing to idle pretty well, went to the yard and got a map sensor and IAC and it sat and idled fine, put it in drive and it stalled out, when it stalled out the check engine light was on, so i flashed the key code and got 12 (battery unhooked) 27 (Injector circuit isn’t switching when it’s told to (TBI)
OR (MPI) injector circuit #1 not switching right
OR (turbo) injector circuit #2 not switching right
OR (all 1990-) injector output driver not responding
- check computer, connections)
im thinking bad fuel injector? or could it be something else? im getting closer...haha.
OR (MPI) injector circuit #1 not switching right
OR (turbo) injector circuit #2 not switching right
OR (all 1990-) injector output driver not responding
- check computer, connections)
im thinking bad fuel injector? or could it be something else? im getting closer...haha.
11-14-2010, 08:34 AM
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ok, so i let the dogs out in the yard and pissed with the jeep a little more, i did the key trick to make sure the code was correct, when i did it, after the key was turned forward, the fuel pump kept clicking on and off every couple seconds, the relays under the hood kept clicking, and it seemed like the 1 fuel injector was clicking, i pushed on the connector, and the clicking injector stopped, and the cycling fuel pump slowed to every 10 seconds, in sync with the relays, but no more clicking from FI
11-16-2010, 11:13 AM
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Year: 1994
Model: Cherokee
Engine: 4.0 L I6
X2^^ my fan relay decided to work on some days and not on others and sometimes intermittently. since I live up north it doesnt get too hot, the only time i really need it is summer on the beaches in 4x4
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