ITB Troubles
#1
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ITB Troubles
Hi guys, I have had Jenvey ITB's in my S for about a month and last week the car lost a lot of power - runs smoothly but it's very slow to redline, I guesstimate 30-40 horse power down.
Connected the AEM to the laptop and it's reading a fuel/air mixture of 7 at idle. Is it even possible for this car to idle so rich? if not then the sensor is messed up...
also, if it is running that rich is probably a bad idea to drive it, correct?
thanks
Connected the AEM to the laptop and it's reading a fuel/air mixture of 7 at idle. Is it even possible for this car to idle so rich? if not then the sensor is messed up...
also, if it is running that rich is probably a bad idea to drive it, correct?
thanks
#2
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Definitely a bad idea to drive it if it's really running that rich. Can you get a tailpipe sniffer to double-check the readings at the exhaust and see if your sensor is just messed up?
Have you checked sensor connections? Do you have an adjustable fuel pressure regulator that might've got cranked up? Is your throttle linkage messed up where it's only opening partially, but you're still injecting the same amount of fuel?
Anything else happen around the time that the power loss occurred (where you doing service, did you let anybody else under the hood, etc, etc)?
Have you checked sensor connections? Do you have an adjustable fuel pressure regulator that might've got cranked up? Is your throttle linkage messed up where it's only opening partially, but you're still injecting the same amount of fuel?
Anything else happen around the time that the power loss occurred (where you doing service, did you let anybody else under the hood, etc, etc)?
#3
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Originally Posted by mxt_77,Aug 31 2007, 08:21 AM
Definitely a bad idea to drive it if it's really running that rich. Can you get a tailpipe sniffer to double-check the readings at the exhaust and see if your sensor is just messed up?
Have you checked sensor connections? Do you have an adjustable fuel pressure regulator that might've got cranked up? Is your throttle linkage messed up where it's only opening partially, but you're still injecting the same amount of fuel?
Anything else happen around the time that the power loss occurred (where you doing service, did you let anybody else under the hood, etc, etc)?
Have you checked sensor connections? Do you have an adjustable fuel pressure regulator that might've got cranked up? Is your throttle linkage messed up where it's only opening partially, but you're still injecting the same amount of fuel?
Anything else happen around the time that the power loss occurred (where you doing service, did you let anybody else under the hood, etc, etc)?
a sniffer sounds like a great idea to bring home and try it out - i'll see who may have that.
throttle linkage looks fine. i cannot think of what happened - i simply did not drive the car for a week and then it changed at WOT...
keep'em coming.
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Originally Posted by Asura,Aug 31 2007, 08:36 AM
Do you have a 1052U? Is the feedback on? If so turn it OFF. Give me a call this weekend, I'll drop by with Andrew
i'm just not trustful of modacar's customer service. want to exhaust all possibilities before flat-bedding it to sac-town...
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#9
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Originally Posted by Asura,Aug 31 2007, 10:16 AM
Also, I still think you need to do a leakdown and compression test, to rule out damage via running open filter.