5/16 MD Plenum Spacer Installed. Having Idling Problems...
04-13-2008, 05:35 AM
#44
Originally Posted by vo7848
Gotcha. 
Would you happen to know what the function of that metal center piece is? I looked at it thoroughly. It doesn't really cover up any hidden passage way or anything. Personally I couldn't see what purpose it serves.
Would you happen to know what the function of that metal center piece is? I looked at it thoroughly. It doesn't really cover up any hidden passage way or anything. Personally I couldn't see what purpose it serves.
04-28-2008, 02:25 AM
#48
I'm bumpin this, lol. I gotta do this when I get home today, thanks vo, I was freakin out, the car stalled while I was sitting at a stop sign after installing, mine is leaking through one of the guiding pins, and must be somewhere else as well, I can run the car with a leak for a little while right? At least till I can find it?
10-08-2008, 01:58 PM
#50
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Update...10/8/08
Last week the car started shutting off when I would warm restart it. For instance, if I stopped at a gas station, fueled, then started the car, the idle would drop below normal. I'd have to give it alittle gas to keep the car from boggling down and shutting off.
Last night I inspected the upper plenum. I found bolts: 7,10,11,12,13,16,17,18 were all under torqued.
I guess they had settled a bit from the last time I torqued them and began to loosen up. I re-torqued everything to 100 inch/lbs, then reset my ECU. Everything works fine now. Just thought I'd document an update for future troubleshooting...
Last night I inspected the upper plenum. I found bolts: 7,10,11,12,13,16,17,18 were all under torqued.
I guess they had settled a bit from the last time I torqued them and began to loosen up. I re-torqued everything to 100 inch/lbs, then reset my ECU. Everything works fine now. Just thought I'd document an update for future troubleshooting...
10-09-2008, 04:42 AM
#51
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Thanks for the update, Vo. Since mine has been on for a few months now maybe I'll just take a look at it this weekend and make sure they are still torqued properly. 
10-09-2008, 06:43 AM
#52
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02-13-2009, 01:30 PM
#53
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2/13/09...Idle problem returns
Last week the car started shutting off when I would warm restart it. For instance, if I stopped at a gas station, fueled, then started the car, the idle would drop below normal. I'd have to give it alittle gas to keep the car from boggling down and shutting off.
Last night I inspected the upper plenum. I found bolts: 7,10,11,12,13,16,17,18 were all under torqued.
I guess they had settled a bit from the last time I torqued them and began to loosen up. I re-torqued everything to 100 inch/lbs, then reset my ECU. Everything works fine now. Just thought I'd document an update for future troubleshooting...
Last night I inspected the upper plenum. I found bolts: 7,10,11,12,13,16,17,18 were all under torqued.
I guess they had settled a bit from the last time I torqued them and began to loosen up. I re-torqued everything to 100 inch/lbs, then reset my ECU. Everything works fine now. Just thought I'd document an update for future troubleshooting...
What do you guys think? This will solve the issue?
02-13-2009, 02:08 PM
#54
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Vo, I'm willing to guess this is your problem. That's exactly what I would do.
I checked mine the last time you posted and mine seemed to be alright... I daily drive my car with some spirited driving here and there. I actually figured that if mine needed to be tightened I would apply just a small amount of loc-tite and go from there. Let us know
I checked mine the last time you posted and mine seemed to be alright... I daily drive my car with some spirited driving here and there. I actually figured that if mine needed to be tightened I would apply just a small amount of loc-tite and go from there. Let us know
02-13-2009, 02:39 PM
#55
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What gets me is how they lose torque, given the little mileage I put on the car. Literally, I put about 30miles on the car per month, tops...
02-13-2009, 05:36 PM
#57
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Idle is great Tony. It only happens when I'm coming to a stop and let off of the accelerator. Or let's say I were sitting in my driveway, waited for the car to reach operating temp, then reved the engine. If I reved it, then pulled my foot off the accelerator. The car will boggle down and almost shut off, then regain smooth idle...
02-13-2009, 06:09 PM
#58
That sounds like something other than a vacuum leak.
Im thinking it could be throttle body calibration. Some of the throttle body position sensors can actually be defective. Nissan put out a TSB on it throttle position sensors.
What year is your Z?
Im thinking it could be throttle body calibration. Some of the throttle body position sensors can actually be defective. Nissan put out a TSB on it throttle position sensors.
What year is your Z?
02-13-2009, 06:47 PM
#59
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2003... 39K miles
02-13-2009, 06:57 PM
#60
It was the 2003 that had the throttle body TSB.
Based on your description, it doesn't sound like a leak. I'm thinking its probably throttle body related. My second guess would be MAF sensor related.
Are you using a cold air intake? If yes, what kind?
Based on your description, it doesn't sound like a leak. I'm thinking its probably throttle body related. My second guess would be MAF sensor related.
Are you using a cold air intake? If yes, what kind?
