Need help figuring out problem on road/dyno related to excess fuel when hot
08-05-2006, 11:56 AM
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Staging Lane
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Need help figuring out problem on road/dyno related to excess fuel when hot Hey guys,
Trying to solve a problem my car has especially after it gets hot. On the dyno the A/F swings below 10:1 swings back up and then keeps oscillating. This starts happening after 3 pulls or so. We swapped the MAF with no positive results. Right now we are swapping the MAP. After that what else can be looked at. The tune was dead on during the 3rd run, nothing was changed and then it starts swinging up and down all over the place on the 4th run.
I would appreciate some advice as to what to look at next.
The has some weird on the road problems when it gets hot also. It shutters at a constant throttle input but is perfectly smooth on decel and accel. I think these two problems are related.
Any ideas?
Trying to solve a problem my car has especially after it gets hot. On the dyno the A/F swings below 10:1 swings back up and then keeps oscillating. This starts happening after 3 pulls or so. We swapped the MAF with no positive results. Right now we are swapping the MAP. After that what else can be looked at. The tune was dead on during the 3rd run, nothing was changed and then it starts swinging up and down all over the place on the 4th run.
I would appreciate some advice as to what to look at next.
The has some weird on the road problems when it gets hot also. It shutters at a constant throttle input but is perfectly smooth on decel and accel. I think these two problems are related.
Any ideas?
