Help!! Stop accelerating at 4500rpm
08-07-09, 12:53 AM
#26
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1st gear is a very high ratio gear...1:3.483 unless im lookin at the wrong book. it wont have enough load for it to stall... your primaries alone can sustain an rpm rise on their own in 1st gear im guessing...
Last edited by Rextasee; 08-07-09 at 12:56 AM.
08-07-09, 01:10 AM
#27
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mean to put this in here
http://foxed.ca/foxed/index.php?page=rx7manual
theres the link to the manuals
http://foxed.ca/foxed/index.php?page=rx7manual
theres the link to the manuals
08-07-09, 02:21 AM
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Do you suppose i should get the fuel pump changed? Does fuel pump has anything to do with it?
08-07-09, 10:20 AM
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08-07-09, 10:23 AM
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What vacuum hose do you mean? I do not really get it. Please explain. thanks..
08-07-09, 10:29 AM
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i had the same problem about a year ago, at first i thought it was fuel cut, then i tried all the ignition components, igniter, plugs, wires coils i tried it all, it was a combo of a bad engine ground and a fucken pinched vacuum line
check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids
Actually, I do not really understand this part "check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids"
Could someone help me explain? Thanks.
08-07-09, 03:00 PM
#34
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Originally Posted by smog-guy707
i had the same problem about a year ago, at first i thought it was fuel cut, then i tried all the ignition components, igniter, plugs, wires coils i tried it all, it was a combo of a bad engine ground and a fucken pinched vacuum line
check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids
Actually, I do not really understand this part "check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids"
Could someone help me explain? Thanks.
i had the same problem about a year ago, at first i thought it was fuel cut, then i tried all the ignition components, igniter, plugs, wires coils i tried it all, it was a combo of a bad engine ground and a fucken pinched vacuum line
check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids
Actually, I do not really understand this part "check all your gorunds and make sure you dont have any vacuum lines broken, at least the ones that go to all the solenoids"
Could someone help me explain? Thanks.
regarding the modifications, do you know what size secondary injectors you're running? a holset turbo with a haltech ecu is a pretty major upgrade for ANY car, especially these, if the tune is off it can screw your car up, bad, when you took it to the dyno did you get a dyno sheet that also showed your afr?
regarding the boost leak/vacuum hose part, the entire system intake system is pressurized, the wastegate/BOV are controlled by boost/vacuum hoses (blue, red, purple, can be any number of colors) they are little rubber-like (usually silicon) hoses that are going to be spidered throughout your engine bay, if one is weak/cracked it can not do anything under normal driving as long as you stay out of boost, because the motor is going to be creating a vacuum, keeping the hoses from splitting, once you get into boost, the air inside the hoses will expand, potentially opening the cracks and allowing a leak in the air that a component sees.
It's a little different for the intake system. It always has air flowing through, but once you get into boost the pressure in the intake increases by quite a bit, and that in turn can lead to cracks in the couplers opening, or anything that isn't sealed/seated correctly to leak air, but I don't think it's a boost leak, if anything i think it's a vacuum hose/fuel issue.
It sounds like you're in over your head, you may not want to pay for it, but at this point, especially with a Holset/Haltech, you may want to get a professional shop to help you out.
08-08-09, 12:45 AM
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most, or all, electrical components in a car have two wires, one for power, the other is the return line or ground, that is attached to the body/chassis/engine, if one of the ground wires isn't attached properly/is loose, it can cause electrical malfunctions
regarding the modifications, do you know what size secondary injectors you're running? a holset turbo with a haltech ecu is a pretty major upgrade for ANY car, especially these, if the tune is off it can screw your car up, bad, when you took it to the dyno did you get a dyno sheet that also showed your afr?
regarding the boost leak/vacuum hose part, the entire system intake system is pressurized, the wastegate/BOV are controlled by boost/vacuum hoses (blue, red, purple, can be any number of colors) they are little rubber-like (usually silicon) hoses that are going to be spidered throughout your engine bay, if one is weak/cracked it can not do anything under normal driving as long as you stay out of boost, because the motor is going to be creating a vacuum, keeping the hoses from splitting, once you get into boost, the air inside the hoses will expand, potentially opening the cracks and allowing a leak in the air that a component sees.
It's a little different for the intake system. It always has air flowing through, but once you get into boost the pressure in the intake increases by quite a bit, and that in turn can lead to cracks in the couplers opening, or anything that isn't sealed/seated correctly to leak air, but I don't think it's a boost leak, if anything i think it's a vacuum hose/fuel issue.
It sounds like you're in over your head, you may not want to pay for it, but at this point, especially with a Holset/Haltech, you may want to get a professional shop to help you out.
regarding the modifications, do you know what size secondary injectors you're running? a holset turbo with a haltech ecu is a pretty major upgrade for ANY car, especially these, if the tune is off it can screw your car up, bad, when you took it to the dyno did you get a dyno sheet that also showed your afr?
regarding the boost leak/vacuum hose part, the entire system intake system is pressurized, the wastegate/BOV are controlled by boost/vacuum hoses (blue, red, purple, can be any number of colors) they are little rubber-like (usually silicon) hoses that are going to be spidered throughout your engine bay, if one is weak/cracked it can not do anything under normal driving as long as you stay out of boost, because the motor is going to be creating a vacuum, keeping the hoses from splitting, once you get into boost, the air inside the hoses will expand, potentially opening the cracks and allowing a leak in the air that a component sees.
It's a little different for the intake system. It always has air flowing through, but once you get into boost the pressure in the intake increases by quite a bit, and that in turn can lead to cracks in the couplers opening, or anything that isn't sealed/seated correctly to leak air, but I don't think it's a boost leak, if anything i think it's a vacuum hose/fuel issue.
It sounds like you're in over your head, you may not want to pay for it, but at this point, especially with a Holset/Haltech, you may want to get a professional shop to help you out.
08-10-09, 04:35 PM
#36
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Can you accelerate at half throttle? Past the 4500rpm barrier. Then do you get full boost and power?
Beware, if your secondaries are not working then you may have detonation and blow your tip seals.
Jonathan
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