Have a 92 XJ sport 4.0 4x4 and been having an issue with a trouble code of 27 ( injector not firing when told) that is intermittent bet seems to be extremely worse in warm weather, it does start bucking a bit then the code comes up but if you turn off the engine and start it up again it goes away for a few minutes. I have replace the TPS, injectors with the 280155703's, the ECM, fuel filter, and have metered the wiring with good results also have good fuel pressure but today after replacing the ECM the code came back within a few minutes. Any help would be greatly appreciated and extremely welcomed. Once again frustrated isn't even the word to explain the world I'm in right now. Help please!!!!

 

try posting in the OEM section, might have better luck there.

 

Edit
Nevermind