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Old 04-02-2015, 10:32 PM   #1
'86 Hardbody SE V6 4x4
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Default Rough Idling/Sputtering While Cold

Let's get straight down to it. On the TBi models of the VG30, which are 1986 to 1989, sometimes they act like they sprained their ankle and don't wanna run while it's cold. However, they run fine when warm with a little sputter here and there.

Give the poor truck some slack. It's probably 30 years old (Like mine will be in December this year), and it's probably NEVER had the wax idle solenoid repacked or replaced. I KNEW I had a bad solenoid, but I chose to just let it be.

Therefore, I don't know how to replace it, but I can tell you that if NOTHING is working for you, and you're sure you have the fast idle screw, timing, an everything else where it's supposed to be, then go buy yourself a wax repacking kit, or a new solenoid. Chances are, that'll be all you need to fix that.

Symptoms are:
Sputtering on takeoff if you haven't let it warm up and idle a while.
Rough idle while cold.
Hard starting while cold.
Some sputtering while warm.
High idle. (Around 1k when warm.)

'86.5 Nissan D21 SE-V6 4x4 Ext Cab
FS5R30A trans / HG43 axle / VG30i
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Old 04-14-2016, 10:53 PM   #2
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Thank you for the advice on the FIS.
I started having a cold rough idle a few days ago that appeared to come out of no were. Do you think this may be my issue?
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Old 01-27-2017, 11:54 PM   #3
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Would this apply to a 86.5 D21 w Z24i with almost identical symptoms except mine starts great
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Old 05-10-2017, 04:44 AM   #4
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What is a wax repacking kit?
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Old 12-20-2017, 12:05 AM   #5
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can we get more info on what this repair is?
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Old 12-20-2017, 12:39 AM   #6
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info on the wax solenoid including the part number (still available from nissan) is at http://www.infamousnissan.com/forum/...t=wax+solenoid
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Old 03-24-2018, 12:50 PM   #7
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Angry 89 d21 44 pickup

Hello, I've had a problem with my truck not wanting to go past 2600rpm's it spits and spuudders and loses power till I bring it down , I've changed the map sensor, tps, put a junkyard distributor in , cleaned the throttle body and still same thing the last thing to change is the crank positioning sensor but I look on YouTube for info on it and that's not what my motor has it shows me two spots possible and or the
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Old 01-28-2020, 03:00 AM   #8
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I looked up 16391-12G00 on nissanpartsdeal.com and it says it doesn’t fit my ‘94 vg30e. Is that the correct part number. I can’t find it on the parts diagrams and I can’t find anything about it in the maintenance manuals. My truck takes a few seconds to start (fuel pump primed) and I let go of the key and it stutters/life for a few seconds before getting to proper idle. Does that sound right? Pump, filter as well as the assembly have been replaced.
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