Intermediate rich spikes while driving. Please help!!
#1
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Car has been running fine for a while. All of a sudden sometimes while driving the AFR spikes towards rich and and the car sort of bucks when this happens. If I push the throttle and accelerate and get under boost it’s fine. Not sure where to start this hunt. A few times I’ve pushed the clutch and revd the car really high and it cleared up. This doesn’t happen all the time either. My laptop is dead so I am going to datalog this when it charges later tonight. Thanks in advance
Car is a 1991 Miata. 1.6L engine running MSQ2
i stopped for a few. Turned the car off for about 30 min. Started it back up and drove home and it ran like normal. Weird
Car is a 1991 Miata. 1.6L engine running MSQ2
i stopped for a few. Turned the car off for about 30 min. Started it back up and drove home and it ran like normal. Weird
Last edited by mx5newbie; 04-30-2019 at 11:39 PM.
#3
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thanks for your reply. Can these settings just change? I have not made any changes other than a few timing adjustments.
edit: well I plugged in the laptop and immediately noticed the tps was sitting at 5 or so. Tried to recalibrate without much luck. I couldn’t get it to go to 100% at WOT either. Since it’s a flying Miata variable tps I went out and loosened the outer screws and adjusted it as close as I could to zero and then recalibrated. That worked and it drove fine for almost an hour of spirited driving and boost pulls. Thanks guys
edit: well I plugged in the laptop and immediately noticed the tps was sitting at 5 or so. Tried to recalibrate without much luck. I couldn’t get it to go to 100% at WOT either. Since it’s a flying Miata variable tps I went out and loosened the outer screws and adjusted it as close as I could to zero and then recalibrated. That worked and it drove fine for almost an hour of spirited driving and boost pulls. Thanks guys
Last edited by mx5newbie; 05-01-2019 at 09:41 PM.
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