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Old 02-09-2021, 07:25 PM #16
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Ohm out the injectors to make sure they are in spec. the fsm says 13.8 ohms at 20*C ( 68*F). give or take a couple of ohms less then 12ohms cold or higher then 16 when hot would be a cause for concern. I would look'at the coolant temps when warm too. bad ECT can screw with a fuel trims as well as a stuck open thermostat. All that said, there was a thread on here a while a go where the symptoms were about the same and in the end it was a loose cranck pulley bolt that was the cause.
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Old 02-09-2021, 08:58 PM #17
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Ohm out the injectors to make sure they are in spec. the fsm says 13.8 ohms at 20*C ( 68*F). give or take a couple of ohms less then 12ohms cold or higher then 16 when hot would be a cause for concern. I would look'at the coolant temps when warm too. bad ECT can screw with a fuel trims as well as a stuck open thermostat. All that said, there was a thread on here a while a go where the symptoms were about the same and in the end it was a loose cranck pulley bolt that was the cause.

Any idea which thread that is?

About a month ago, I replaced the radiator (it was definitely time), the fan and fan clutch (they weren't terribly expensive, and I was already gonna have a bunch of stuff pulled out) and the belts. Since then, the alternator belt squeals a bit at startup. I've tightened it up once or twice, but it keeps happening. I wonder if they might be connected...
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Old 02-09-2021, 09:57 PM #18
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Any idea which thread that is?

About a month ago, I replaced the radiator (it was definitely time), the fan and fan clutch (they weren't terribly expensive, and I was already gonna have a bunch of stuff pulled out) and the belts. Since then, the alternator belt squeals a bit at startup. I've tightened it up once or twice, but it keeps happening. I wonder if they might be connected...
It took me a while to find it but here it is.
Running Lean and misfire
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Old 02-10-2021, 02:33 PM #19
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I would advice to check valve clearances.. my 2.7 rough idle when cold for like 30 seconds then back to normal.. same codes i got.
put a paper on exhaust and if it getting sucked the valve issue for sure.
adjusted valve clearances and run perfectly afterwards.
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