Freaking off-idle studder
08-28-2007, 09:57 PM
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Freaking off-idle studder Ugh. This is the first problem of any sort I've had with the LTwon. I get a small off-idle studder under part-throttle take-offs from stop lights. Just a small hiccup, then I'm on my way. If I mash the gas, it goes like hell, no studder. If I creep away, no studder. Mid-throttle like a normal take-off? Studder.
That's my only problem. No missing anywhere or any sign that the opti is going out. The plug wires are all light-years away from the headers. Plugs are new and were gapped properly. The car also idles right were it always has, so I don't see this being a vacuum leak.
I have a few things I'm going to look at sometime in the next few days.
1. Maybe my EGR blockoff plates are leaking. This started a couple months after headers went on.
2. I was open-headers for 2 weeks. I'll run a scan and check my O2 values. I coulda drenched one when running pig-rich and ruined it.
3. TPS. Doubt it, but I'll check the voltage anyways when I log on Datamaster.
What else can we come up with? Brainstorming time!!
That's my only problem. No missing anywhere or any sign that the opti is going out. The plug wires are all light-years away from the headers. Plugs are new and were gapped properly. The car also idles right were it always has, so I don't see this being a vacuum leak.
I have a few things I'm going to look at sometime in the next few days.
1. Maybe my EGR blockoff plates are leaking. This started a couple months after headers went on.
2. I was open-headers for 2 weeks. I'll run a scan and check my O2 values. I coulda drenched one when running pig-rich and ruined it.
3. TPS. Doubt it, but I'll check the voltage anyways when I log on Datamaster.
What else can we come up with? Brainstorming time!!
08-29-2007, 02:48 AM
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I would look at the TPS with a graphing volt meter. Making sure there are no drop outs at a certain throttle position. Or check out the MAP. Other than that, check the things you have already suspected.
