Need help on what's wrong with my 2001 cobra with 89k miles. The main mods are full exhaust, 4.10s, stage two clutch, bama tune and CAI. When shifting into neutral, the rpms hang at the same amount from any previous gear. It will also hang at the previous gears rpms until I let out the clutch into the next gear. This is a new issue I've never experienced in the two years of ownership. Thanks
Hanging RPM's
- Thread starter Hunter9003
- Start date
so nothing on the car has changed in 2 years?
Ive seen this as a tune related thing before but not likely if the same tune has been on there a while
Ive seen this as a tune related thing before but not likely if the same tune has been on there a while
No update on the tune in that time period so I'm pretty sure I can rule that out
Clean the IAC.
Any threads or directions on how to go about that?
Any codes?
I'll use my SCT for that diagnosis tonight
that happened to me when i had put in the tune with my sct (bama tune)
i had to return to stock and email them about the problem. they sent me new tunes and the car runs good now
i tried cleaning the iac but that didnt help at all
i had to return to stock and email them about the problem. they sent me new tunes and the car runs good now
i tried cleaning the iac but that didnt help at all
Unplug the IAC. Remove the two bolts holding it in place. They're 8mm IIRC. Be careful when removing it. The gasket is thin. I've used brake cleaner and throttle body cleaner on mine. Reverse steps to re - install. If it gets better or fixes the issue I would order a new one.
If he's been running the tune for two years and the problem just surfaced then I doubt it's a tune issue.
Apologies on the late reply... more back story on the issue. After returning from a month in the field and the car not being driven for that time period, I had to replace the battery before I drove 3hrs home. During that drive I ran into the hanging RPM's issue and it stayed unresolved until I beat on the car a little the next day and I haven't had the issue since. I'm not sure if that's a coincidence or not though.
Even though the car isn't showing a check engine light, I took my SCT tuner and read codes "P1000 OBD Systems Readiness Test Not Complete", as well as "P0442 Evap Emissions Systems Leak Detected (Small Leak)". I don't believe the 2nd code is correct though because I replaced the leaking filler neck for the gas tank and haven't had an issue.
Thoughts? Thanks
Even though the car isn't showing a check engine light, I took my SCT tuner and read codes "P1000 OBD Systems Readiness Test Not Complete", as well as "P0442 Evap Emissions Systems Leak Detected (Small Leak)". I don't believe the 2nd code is correct though because I replaced the leaking filler neck for the gas tank and haven't had an issue.
Thoughts? Thanks
Will do
There's usually some relearn time for the idle. That's probably when you noticed it hanging.
If you pulled the codes AFTER replacing a dead battery, they're still legit codes. Unless you replaced the filler neck since replacing the battery.
I cleared the codes and will see if they still return in a few days.
Took the cobra on vacation this labor day weekend and it decided to hesitate under load after a few hours of travel both ways. Realized it was prob the fuel pump as I just hit 90k miles and the evap code I was receiving. Just scheduled to have a new 265lph pump installed at Blow By Racing. Thoughts?
Received check engine light again as well. States (Fuel Rail Pressure Sensor A Circuit). Also cant say enough about how awesome BBR is in Boca Raton!
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Did you actually diagnose it as the pump or did you just throw parts at it? A bad fuel pump won't throw an Evap code.
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