Supercharger losing boost at 2000 rpm! Help!!!!
06-30-2010, 10:48 PM
#1
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Supercharger losing boost at 2000 rpm! Help!!!!
posted this in the roush, saleen, boss section also hoping for some info please!!!
Ok I know its a F150 but this seems to be an issue with the roush supercharger not the truck. I was driving around just now and i get on it a little, nothing major, and i notice the exhaust is way louder than the supercharger whine. So I get on it again to see if it did it again and it did. I have boost up until about 2000 rpm then I can hear the supercharger winding down even though im still accelerating. Anyone know what could be causing this? I checked under the hood and nothing looks out of place but its dark so ill have to take a closer look tommorow morning. Ill also have to call Roush and see what they say. The truck has less than 10000 miles on it but just turned 3 years old as of the 6th this month
i feel sick since i was just about to sell the truck and get a 5.0
Ok I know its a F150 but this seems to be an issue with the roush supercharger not the truck. I was driving around just now and i get on it a little, nothing major, and i notice the exhaust is way louder than the supercharger whine. So I get on it again to see if it did it again and it did. I have boost up until about 2000 rpm then I can hear the supercharger winding down even though im still accelerating. Anyone know what could be causing this? I checked under the hood and nothing looks out of place but its dark so ill have to take a closer look tommorow morning. Ill also have to call Roush and see what they say. The truck has less than 10000 miles on it but just turned 3 years old as of the 6th this month
i feel sick since i was just about to sell the truck and get a 5.0
07-01-2010, 03:08 AM
#2
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you have shown no proof that your even losing boost. nothing more than "i hear this and that and its not what im expecting."
do you have a boost guage? is it hooked up properly? is the line kinked? does the boost guage show solid boost or does it drop off?
do you have a boost guage? is it hooked up properly? is the line kinked? does the boost guage show solid boost or does it drop off?
07-01-2010, 08:00 AM
#3
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07-01-2010, 10:02 AM
#4
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no boost gauge so im just going by the fact that i can hear the whine until 2100 rpm, then it drops off and i can actually hear it winding back down. Also the fact that at that point the truck feels extremely slow. Like there is no s/c at all.
I did some reading last night and sounds like belt slip could be a cause. I checked for dust around the s/c snout and there was plenty, but i have had belt issues before so im not sure if its from then or now. So ill have to drive a little more today now that i wiped it down and see if theres more showing up
I did some reading last night and sounds like belt slip could be a cause. I checked for dust around the s/c snout and there was plenty, but i have had belt issues before so im not sure if its from then or now. So ill have to drive a little more today now that i wiped it down and see if theres more showing up
07-01-2010, 02:06 PM
#5
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found out that since the truck had an aftermarket pulley made of aluminum and it was very thin metal, it was getting stuck on the s/c snout. It cracked under the stress and broke a few of the teeth off. Currently Chicane sport tuning is making me a custom pulley and getting a new belt. thankfully it broke while I was showing the owner the problem and i was able to coast back to his shop
