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Inconsistent Idle

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Old 02-15-2019, 09:02 PM
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Default Re: Inconsistent Idle

Originally Posted by triple beam
clean your fuel injectors or replace
my idle was fluctuating and now its great
so it's my injectors? See there are so many different reasons for my problems I seriously don't even know where to start.
Old 02-16-2019, 10:21 AM
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Default Re: Inconsistent Idle

Originally Posted by Kindled Light
so it's my injectors? See there are so many different reasons for my problems I seriously don't even know where to start.

yea try that and also deep clean your IACV or get new aftermarket specific to your engine.

normal idle should not be over 1k
Old 02-16-2019, 10:22 AM
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Default Re: Inconsistent Idle

Originally Posted by triple beam
yea try that and also deep clean your IACV or get new aftermarket specific to your engine.
I have a brand new IACV as of December. Can you explain why it would be injector related and what causes it? The engine is just free spinning. Why would stopping affect it based on my speed?
Old 02-16-2019, 10:25 AM
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Default Re: Inconsistent Idle

Originally Posted by Kindled Light
I have a brand new IACV as of December. Can you explain why it would be injector related and what causes it? The engine is just free spinning. Why would stopping affect it based on my speed?

you need consistent flow of fuel to your pistons or something like that. if your injectors are dirty your engine wont be running properly. something like that, i'm not a mechanic.



Originally Posted by BiggieBert

check your o2 sensor, this was the culprit for my wonky idle, went through iacvs, gaskets, fitv, injectors, checked tps, pretty much everything associates with idle listed in the helms. New o2 and have had perfect idle since.



i agree. oxygen sensor is also very important
Old 02-28-2019, 02:27 PM
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Default Re: Inconsistent Idle

Seem to have fixed my issue by replacing the alternator and checking all the grounds. Tested voltage at battery with headlights and blower motor on and was getting 13.7v but soon as I did any other load it dropped it down to 12.8. Went through the Helms flow chart and saw it was reading under 50 amps. Replaced the alternator and idle is now consistent and where it should be!
Old 02-28-2019, 02:41 PM
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Default Re: Inconsistent Idle

Originally Posted by Infinity_Racer
Seem to have fixed my issue by replacing the alternator and checking all the grounds. Tested voltage at battery with headlights and blower motor on and was getting 13.7v but soon as I did any other load it dropped it down to 12.8. Went through the Helms flow chart and saw it was reading under 50 amps. Replaced the alternator and idle is now consistent and where it should be!
Interesting. Perhaps I'll venture down that route when I get some time. Did your idle always act funny (1k+) until you came to a complete stop as well?
Old 03-01-2019, 06:05 PM
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Default Re: Inconsistent Idle

Originally Posted by Kindled Light
Interesting. Perhaps I'll venture down that route when I get some time. Did your idle always act funny (1k+) until you came to a complete stop as well?
Yup! Exactly how it was in your video and wouldnt drop down until I came to a stop.
Old 03-01-2019, 06:06 PM
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Default Re: Inconsistent Idle

Originally Posted by Infinity_Racer
Yup! Exactly how it was in your video and wouldnt drop down until I came to a stop.
How very interesting. Stupid old alternators I suppose. Looks like I'll invest into looking at this when I do my timing belt in May. It's not giving me actual issues yet but it's super annoying.
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