Rb20 Gtst--Idle Problems - Skyline Owners Forum

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Old 22-11-2016, 08:04 PM   #1
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Unhappy Rb20 Gtst--Idle Problems

Hey everyone, my cars having idle issues. It stalls out when I'm not accelerating and stays in low idle-- I went ahead and cleaned out MAF sensor, TPS sensor and AAC valve, also did oil and filter and spark plugs... still same issue!
I'm thinking it's a vacuum leak but if anyone has any idea or has came across this issue any help would be appreciated.
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Old 23-11-2016, 04:20 PM   #2
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I have a similar issue on by rb20det. If I rev the engine, it drops below idle and almost stalls but stays alive, but when I drive and pull up to a stop light when its warm it stalls out in the same situation. I cleaned out my AAC and think it's vacuum leak also. Some have said it's a tired ignitor, but I tested it with a multimeter based on a video on youtube and seems fine.
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Old 23-11-2016, 04:43 PM   #3
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Quote:
Originally Posted by unlewser View Post
I have a similar issue on by rb20det. If I rev the engine, it drops below idle and almost stalls but stays alive, but when I drive and pull up to a stop light when its warm it stalls out in the same situation. I cleaned out my AAC and think it's vacuum leak also. Some have said it's a tired ignitor, but I tested it with a multimeter based on a video on youtube and seems fine.
well I'm try and figure out if its a vacuum leak this weekend will let you know what I figure out! Thanks for the response.
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Old 23-11-2016, 06:00 PM   #4
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how are you going to test and let me know which line is the culprit, so I can look into also.
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Old 01-12-2016, 08:16 PM   #5
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Hey I figured out what it was, not a hose! MAF sensor needs to be replaces- I had cleaned all the sensors before and nothing changed so when I decided to disconnect the MAF sensor while the car was running it started to idle back to normal. Ordered OEM part from Rivsu $66 with shipping and not my car is running amazing!!
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Old 02-12-2016, 12:34 PM   #6
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Yup, I read your problems, and it sounded like a MAF. These things are trouble. especially at 20+ years old now. Mine is still working ok, I keep it clean with MAF sensor cleaner I bought at advanced auto.

Glad to hear you got it sorted.
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