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Old 04-25-2019, 12:22 PM
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Huskymaniac Huskymaniac is offline
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Location: Corning, NY
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Got the head gaskets done now the idle is bouncy

Bounces between 500ish and 1000ish. Any ideas?

Head gaskets, valve cover gaskets, timing belt, idler pullies, spark plugs, knock sensors and vacuum lines were all replaced along with the intake and exhaust gaskets.

It also sounds like a diesel now.

Here is the idle:
https://youtu.be/e6e7F1-IlLo

Here is the diesel sound:
https://youtu.be/tWaDsEwSC4w
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Tony

1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads
2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil
2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil
1992 Red Ferrari 348 ts, 82,XXX, Redline everything

Last edited by Huskymaniac; 04-25-2019 at 04:34 PM.
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Old 04-26-2019, 08:08 AM
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Huskymaniac Huskymaniac is offline
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Re: Got the head gaskets done now the idle is bouncy

A couple of pieces of information:

The check valve (16195AA030) was still in the bag of leftover parts when I picked up the car. If that is left out, could it cause the idle issue?


Also, the short term fuel trim numbers are very high and erratic.

I have no qualms about re-soldering the MAF and trying that. Also, if he didn't replace the gaskets on the exhaust manifold to the pre-cats, could that cause this issue?
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Tony

1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads
2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil
2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil
1992 Red Ferrari 348 ts, 82,XXX, Redline everything
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