2004 Jeep Cherokee INJECTOR

2004 JEEP CHEROKEE
65,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MANCHAS
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Check engine light came on. Had check code
Code P0203 which is open or shorted injector #3.
Replaced injector. check engine light came back on with same code. Ohmmed out injector compared with injector #2 they had almost identical reading.

Swapped injector #2 with injector #3 worked fine for a day and again check engine light came on with the same code (P0203)

My question what can it be wrong? Is there something to check if injector getting power all the time? what powers the injector (where does the electrical signal comes from)?

thanks in advance
May 26, 2010 at 6:25 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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