sicilianjg Posted June 20, 2007 Report Share Posted June 20, 2007 Well guys here it is. I went to the Mustang Roundup in Steamboat Springs CO. with my Mustang Club. It took 929 miles one way to get there when coming back I notice my booster gauge was not working it would get stock around 10 pounds of boost. At around 80 miles an hour I notice the boost showing 10 pounds then dropping to 4 pounds. When I came to a complete stop it would show the same thing. It was acting crazy down then up there was something wrong. Today I took it to my Ford dealer and here's what they found. I need a NEW CLUSTER and SOLENOID that attaches to the supercharger and here is the catch I might need a NEW SUPERCHARGER why, because the SOLENOID is attached to the SUPERCHARGER and they don't know if they can get the SOLENOID by itself boy does that S They will call me and let me know what the verdict is. One thing for sure that they told me and these guys are personal friends of mine good thing I did not change my PULLEY! I do have a JLT CAI/ w SCT tune and 3:73 gears and that was no problem. I will let you guys know what they tell me. Joe Link to comment Share on other sites More sharing options...
drlovegun Posted June 20, 2007 Report Share Posted June 20, 2007 Were you gettin boost readings while you were cruising???? Link to comment Share on other sites More sharing options...
sicilianjg Posted June 20, 2007 Author Report Share Posted June 20, 2007 Were you gettin boost readings while you were cruising???? At 80 miles an hour it would show 10 pounds of boost at 40 miles an hour it would show 10 pounds of boost than drop! All I can say is it was crazy Link to comment Share on other sites More sharing options...
500PLUS Posted June 20, 2007 Report Share Posted June 20, 2007 Well guys here it is. I went to the Mustang Roundup in Steamboat Springs CO. with my Mustang Club. It took 929 miles one way to get there when coming back I notice my booster gauge was not working it would get stock around 10 pounds of boost. At around 80 miles an hour I notice the boost showing 10 pounds then dropping to 4 pounds. When I came to a complete stop it would show the same thing. It was acting crazy down then up there was something wrong. Today I took it to my Ford dealer and here's what they found. I need a NEW CLUSTER and SOLENOID that attaches to the supercharger and here is the catch I might need a NEW SUPERCHARGER why, because the SOLENOID is attached to the SUPERCHARGER and they don't know if they can get the SOLENOID by itself boy does that S They will call me and let me know what the verdict is. One thing for sure that they told me and these guys are personal friends of mine good thing I did not change my PULLEY! I do have a JLT CAI/ w SCT tune and 3:73 gears and that was no problem. I will let you guys know what they tell me. Joe I'm very interested in your experience. I'm wanting to do the jlt/with an evo tune, but was also thinking about a pulley. Make sure you post all the details and their comments relating to the mods. Thanks, JF Link to comment Share on other sites More sharing options...
FordGeek Posted June 21, 2007 Report Share Posted June 21, 2007 Well guys here it is. I went to the Mustang Roundup in Steamboat Springs CO. with my Mustang Club. It took 929 miles one way to get there when coming back I notice my booster gauge was not working it would get stock around 10 pounds of boost. At around 80 miles an hour I notice the boost showing 10 pounds then dropping to 4 pounds. When I came to a complete stop it would show the same thing. It was acting crazy down then up there was something wrong. Today I took it to my Ford dealer and here's what they found. I need a NEW CLUSTER and SOLENOID that attaches to the supercharger and here is the catch I might need a NEW SUPERCHARGER why, because the SOLENOID is attached to the SUPERCHARGER and they don't know if they can get the SOLENOID by itself boy does that S They will call me and let me know what the verdict is. One thing for sure that they told me and these guys are personal friends of mine good thing I did not change my PULLEY! I do have a JLT CAI/ w SCT tune and 3:73 gears and that was no problem. I will let you guys know what they tell me. Joe Joe, When the boost drops to 4lbs, are you at wide open throttle? You know, these cars have a pressure bypass valve that does not allow constant boost to be delivered to the engine. As the car revs higher the boost will gradually decrease; there's ways to keep it constant, but that's another story. Now, if the boost SUDDENLY drops from 10 to 4 lbs., then there probably is something else at play. Also, are you sure that the belt isn't slipping. In this case you WOULD see a sudden drop in boost. Your CAI may have given you just enough power to break the friction between the belt and the pulley. Usually, a Metco idler allows the belt to wrap more completely around the blower pulley preventing boost dropoff. Just a thought - I never trust the dealership regardless of how nice they are. Regards, Joseph (FordGeek) Link to comment Share on other sites More sharing options...
sicilianjg Posted June 21, 2007 Author Report Share Posted June 21, 2007 Joe, When the boost drops to 4lbs, are you at wide open throttle? You know, these cars have a pressure bypass valve that does not allow constant boost to be delivered to the engine. As the car revs higher the boost will gradually decrease; there's ways to keep it constant, but that's another story. Now, if the boost SUDDENLY drops from 10 to 4 lbs., then there probably is something else at play. Also, are you sure that the belt isn't slipping. In this case you WOULD see a sudden drop in boost. Your CAI may have given you just enough power to break the friction between the belt and the pulley. Usually, a Metco idler allows the belt to wrap more completely around the blower pulley preventing boost dropoff. Just a thought - I never trust the dealership regardless of how nice they are. Regards, Joseph (FordGeek) Joseph, the pulley is STOCK! All I can say is the BOOST GAUGE is SHOT and the people I deal with I do trust because I talk to all that are involved and most are my friends and club members. This dealership is our sponser for our club "Southern Arizona Mustang Club" and has been since 1964. I did have an 03 Cobra that I bought new and I know what the boost gauge is suppose to do and had that car for over 40,000 miles with NO problems with the boost gauge. Joe Link to comment Share on other sites More sharing options...
sicilianjg Posted June 21, 2007 Author Report Share Posted June 21, 2007 I'm very interested in your experience. I'm wanting to do the jlt/with an evo tune, but was also thinking about a pulley.Make sure you post all the details and their comments relating to the mods. Thanks, JF JF, I see no problems with the JLT and evo tune, however I would strongly recommend you stay away from the pulley change for now and wait for the warranty to expire Joe Link to comment Share on other sites More sharing options...
drlovegun Posted June 21, 2007 Report Share Posted June 21, 2007 I run zero boost all the time unless I'm getting on the gas so I'm confused as to why you'd been running 10 pounds while cruising at 80mph. If I'm cruising, I'm at 0, when I lay on the gas it jumps to about 10. Link to comment Share on other sites More sharing options...
SpeedRacer Posted June 21, 2007 Report Share Posted June 21, 2007 I run zero boost all the time unless I'm getting on the gas so I'm confused as to why you'd been running 10 pounds while cruising at 80mph. If I'm cruising, I'm at 0, when I lay on the gas it jumps to about 10. +1 Link to comment Share on other sites More sharing options...
ColdwaterHotrod Posted June 22, 2007 Report Share Posted June 22, 2007 At 80 miles an hour it would show 10 pounds of boost at 40 miles an hour it would show 10 pounds of boost than drop! All I can say is it was crazy Did it feel like it had 10 psi? Did you lose fuel mileage on the trip or did it get better? Link to comment Share on other sites More sharing options...
sicilianjg Posted June 22, 2007 Author Report Share Posted June 22, 2007 Did it feel like it had 10 psi? Did you lose fuel mileage on the trip or did it get better? WOW, you guys are something else! THE BOOST GAUGE IS NO GOOD PERIOD!!!!!!!!!! They need to replace the CLUSTER and SOLENOID that attaches to the supercharger or maybe a NEW SUPERCHARGER if they cannot get the solenoid by itself. I will let you guys know when I get the word. Joe Link to comment Share on other sites More sharing options...
Light66 Posted June 22, 2007 Report Share Posted June 22, 2007 WOW, you guys are something else! THE BOOST GAUGE IS NO GOOD PERIOD!!!!!!!!!! They need to replace the CLUSTER and SOLENOID that attaches to the supercharger or maybe a NEW SUPERCHARGER if they cannot get the solenoid by itself. I will let you guys know when I get the word. Joe Go with your first instinct. Link to comment Share on other sites More sharing options...
drlovegun Posted June 22, 2007 Report Share Posted June 22, 2007 Go with your first instinct. LMAO!! Dude needs a valium :banana piano: Link to comment Share on other sites More sharing options...
carnut Posted June 22, 2007 Report Share Posted June 22, 2007 Sounds like the intakes valves are bad, blow by is escaping into the supercharger and back pressuring the gage. Link to comment Share on other sites More sharing options...
jcthorne Posted June 23, 2007 Report Share Posted June 23, 2007 With the fluctuating reading, the defective cluster diagnosis I understand. What has the overboost relief valve solenoid got to do with a malfunctioning gauge? Does not sound right at all. Link to comment Share on other sites More sharing options...
ColdwaterHotrod Posted June 23, 2007 Report Share Posted June 23, 2007 WOW, you guys are something else! THE BOOST GAUGE IS NO GOOD PERIOD!!!!!!!!!! They need to replace the CLUSTER and SOLENOID that attaches to the supercharger or maybe a NEW SUPERCHARGER if they cannot get the solenoid by itself. I will let you guys know when I get the word. Joe Take a chill pill! I was just asking a serious question to see what things correlated to the problem or what other affects were noticed. guess I'm done with this thread, good luck getting your car fixed Link to comment Share on other sites More sharing options...
sicilianjg Posted June 23, 2007 Author Report Share Posted June 23, 2007 Sounds like the intakes valves are bad, blow by is escaping into the supercharger and back pressuring the gage. Thanks I'll check it with them! Link to comment Share on other sites More sharing options...
wildosvt Posted June 25, 2007 Report Share Posted June 25, 2007 Sounds like the intakes valves are bad, blow by is escaping into the supercharger and back pressuring the gage. If the intake valves were bad he would of noticed that before the boost gauge issue. Trust me. Run like poop? You BETCHA! Link to comment Share on other sites More sharing options...
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