Slight part throttle hesitation....
Slight part throttle hesitation.... I've noticed recently a slight, hesitaion when accelerating sometimes. Idle is fine, constant speed is fine, WOT is fine. But sometimes, not always when getting on the throttle like 2000-3500 rpm range I can detect a slight hesitation. Any ideas? Plugs, wires, top end cleaners all recently done, fuel filter maybe 2 years old...some kinda tuning issue? Car has been tuned via LS1 Edit, car is a M6 with 60K.....LT's, 4:10's basic bolt-ons.....thanks.
Check the EGR spark modifier table if you have EGR
removed; it may want to push more advance than the
engine likes and then over-compensate with KR. If
EGR is still there you may want to check the valve
for clean operation.
removed; it may want to push more advance than the
engine likes and then over-compensate with KR. If
EGR is still there you may want to check the valve
for clean operation.
I didn't do the tune....I had the tune done. So if I call them what do I tell them that actually needs to be checked? VE range? What's that? I know alot about cars, but not much about LS1 Edit....thanks!
if you had someone tune your car they should know how to fix this or you need to get your money back cause they dont know how to tune
but just incase we will still help you out so you can set them strait
the ve, if it is off can cause odd feeling response in certain areas. jimmyblue brings up a good point as well. they need to scan the car to see what is going on, what the timing is compaired to the actual desired timing, if there is any kr, see how your fuel trims are, make sure you o2 sensors are operating right in those ranges, check for misfire. there is so much that can be checked and they should beable to do all this for you and take care of it in no time
but just incase we will still help you out so you can set them strait
the ve, if it is off can cause odd feeling response in certain areas. jimmyblue brings up a good point as well. they need to scan the car to see what is going on, what the timing is compaired to the actual desired timing, if there is any kr, see how your fuel trims are, make sure you o2 sensors are operating right in those ranges, check for misfire. there is so much that can be checked and they should beable to do all this for you and take care of it in no time
Originally Posted by WS6FirebirdTA00
if you had someone tune your car they should know how to fix this or you need to get your money back cause they dont know how to tune
but just incase we will still help you out so you can set them strait
the ve, if it is off can cause odd feeling response in certain areas. jimmyblue brings up a good point as well. they need to scan the car to see what is going on, what the timing is compaired to the actual desired timing, if there is any kr, see how your fuel trims are, make sure you o2 sensors are operating right in those ranges, check for misfire. there is so much that can be checked and they should beable to do all this for you and take care of it in no time
but just incase we will still help you out so you can set them strait
the ve, if it is off can cause odd feeling response in certain areas. jimmyblue brings up a good point as well. they need to scan the car to see what is going on, what the timing is compaired to the actual desired timing, if there is any kr, see how your fuel trims are, make sure you o2 sensors are operating right in those ranges, check for misfire. there is so much that can be checked and they should beable to do all this for you and take care of it in no time
thanks dude, I'll have to give them a call....it's SOOOOOO slight I hope they can find it though?
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i know how it feels man i can tell everything in my car and i hate it sometimes. i try to get it sooo perfect it takes me so long to tune sometimes, plus not having my license for the time being sucks too
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Originally Posted by WS6FirebirdTA00
if you had someone tune your car they should know how to fix this or you need to get your money back cause they dont know how to tune
Obviously they don't know what they're doing!!!
Let me know what happens, I need to get this fixed too!
What may have caused this is messing around in the MAF table. Tell them to put it back to stock if you still have the stock MAF.
EDIT/UPDATE: I took my car back to FBody Central and told them to put my computer back to stock and retune it. They did a wonderful job on the tune this time around. I'll feel a lot less apprehensive about going there now.
Last edited by Xtnct00WS6; Sep 12, 2005 at 11:05 AM.
given that everything else is healthy, i'd bump up some timing down low. the car can take a lot more at partial throttle/lower rpm, and it really picks up for 'around town' fun. i just added 5 degs beween 2-3.5krpm and it's much more fun of a daily driver now.
