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I recently bought a 92 GMC Jimmy SLT 4x4 with CPI. The problem i'm having is the puter is throwin a code 43 and the engine has hardly any power trying to accelerate. But sometimes it will have tons of it (mostly not). You can floor it and then it will reach a certain rpm range and take off. What do you guys think it is? Thanks in advance for any tips you can help me with. I have to fix it in a tight budget so trying things to see if it works isn't part of the budget.
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