""Kept geting " check engine" light on my Isuzu Rodeo. Spent a bunch of money to get it fixed but nobody could until I found an old experienced mechanic. Turns out to be the "transmission position switch" on the transmission handle on the floor. A small switch to tell the engine to adjust fuel air mixture. Was told this is a very common problem.""
Then how did you solve this problem? what did you buy? how much did you spend?
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code p1340 refers to ignition control module (ICM)-cylinder identification/ syncronization===causes--wiring--ignition coils--ICM---ECM Talk to the service dealer as to the most probable failed unit before you waste money
You've probably fixed this by now. I had the same problem and it wouldn't pass the smog check. I thought I'd have to replace the EGR valve but now know that would have not solved the problem. The solution was to remove the EGR valve, plug the rear hole and use some carb cleaner down the other hole. I'd get two cans. I sprayed a bunch of liquid in the hole but it just filled up. Had my wife come out and rev the engine for a bit. Finally, the liquid got sucked into the port and I sprayed an entire can in while she kept the engine RPM up. Bolted the EGR valve back on, took it to the Smog check place and it passed with flying colors.