# Help me out with my KADET **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 13, 2012, 1:36pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980 "2012-05-13T13:36:28Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 13, 2012, 1:36pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/1 "2012-05-13T13:36:28Z")
Alright I need help figuring out whats going on with my engine. The RPM drops when I clutch-in. Clutching-in from below 3000rpm, the RPM drops super low like 100 and then rises up to idle which is around 1000. Clutching-in from any rpm above 3000, the engine will always land on its face unless I tap the gas peddle. My AEM eugo wideband is telling me that the ATFR is going very rich (10-11) when I clutch-in yet idles lean in the 16s… Somethings triggering more fuel when I clutch-in. What can cause this? Bad MAF, ECU, FPR? I have already bought a new IACV, plugs/wires, cleaned MAF. I tried changing the timing with no luck. Heres my setup Stock KA24DE Stock ECU Walbro 255/zx filter Stock injectors Stock MAF SR T25 on stock psi Ebay bottom mount mani 24" CX racing FMIC HKS v3 BOV (disconnecting it helps out a bit) 8:1 FMU for now (without the FMU hooked up, the car runs a bit lean but still goes crazy rich and stalls out when clutch-in) I want to get this thing figured out before the next drift day so any help or suggestions would be great. Jake ---------- Post added at 04:36 PM ---------- Previous post was at 04:28 PM ---------- I should also mention that the engine had the RPM drop issue before I turboed it but it got much worse with the turbo on. ---
**Author:** ![drewce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/drewce/32/5733_2.png) [@drewce](https://forums.speedlife.net/u/drewce)\ **Post date:** [May 15, 2012, 12:27am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/2 "2012-05-15T00:27:11Z")
Check for vacuum leaks especially around the fast idle valve not sure if ka’s have them but my h22(honda) did ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 15, 2012, 10:47am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/3 "2012-05-15T10:47:13Z")
> [@drewce](#): > > Check for vacuum leaks especially around the fast idle valve not sure if ka’s have them but my h22(honda) did Thanks. Ive checked my vac lines many times but no leaks found ---
**Author:** ![RustyS13](https://avatars.discourse-cdn.com/v4/letter/r/b38774/32.png) [@RustyS13](https://forums.speedlife.net/u/RustyS13)\ **Post date:** [May 15, 2012, 10:51am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/4 "2012-05-15T10:51:03Z")
upgrade your injectors to 370cc at least and get the c ar tuned. You can’t expect a boosted ka to run fine on stock ecu ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 15, 2012, 1:47pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/5 "2012-05-15T13:47:51Z")
its getting too much fuel and stalling out according to my wideband. runs the same without the turbo hooked up. ---
**Author:** ![drewce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/drewce/32/5733_2.png) [@drewce](https://forums.speedlife.net/u/drewce)\ **Post date:** [May 16, 2012, 1:41am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/6 "2012-05-16T01:41:14Z")
How about the wiring for the maf make sure its not broken anywhere ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 16, 2012, 6:25pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/7 "2012-05-16T18:25:54Z")
thanks ill check that out ---
**Author:** ![Clutchfire](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clutchfire/32/5654_2.png) [@Clutchfire](https://forums.speedlife.net/u/Clutchfire)\ **Post date:** [May 16, 2012, 6:46pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/8 "2012-05-16T18:46:18Z")
let me help out here. This has nothing nothing at all to do with your turbo setup. noting about vacuum leaks. don’t wast your time with this its not going to help at all. First start with your O2 sensor. This is very common for older KAs. My buddy had a problem with that sort of thing the O2 sensor was the problem just replace it see what happens. ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 17, 2012, 7:13am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/9 "2012-05-17T07:13:44Z")
> [@Clutchfire](#): > > let me help out here. This has nothing nothing at all to do with your turbo setup. noting about vacuum leaks. don’t wast your time with this its not going to help at all. First start with your O2 sensor. This is very common for older KAs. My buddy had a problem with that sort of thing the O2 sensor was the problem just replace it see what happens. Thanks ill try that. Today I unplugged the o2 while idling and there was no change at all in idle or ATFR. It must be a bad o2…? Ill give that a try. ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 17, 2012, 4:10pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/10 "2012-05-17T16:10:30Z")
I tested the voltage between the sensor and ground while idling and I got zero volts. I read it should be between .2-.9v. I called nissan and they told me its $136 for a new one! anyone know of a cheaper alternative? I bet there isn’t one ---
**Author:** ![Clutchfire](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clutchfire/32/5654_2.png) [@Clutchfire](https://forums.speedlife.net/u/Clutchfire)\ **Post date:** [May 17, 2012, 6:41pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/11 "2012-05-17T18:41:10Z")
parts source. hands down the cheapest place to buy new after market parts. Almost as good as OEM. I got mine on sale from Canadian tire though nkg for 63 bucks. both have good prices Can you let us know if this solves your problem? ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 17, 2012, 9:00pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/12 "2012-05-17T21:00:32Z")
awesome ill check them out. I have an AEM EUGO wideband. Isn’t it possible for me to use one of the extra wires from the sensor and hook it up to my ECU? I’ll see if I can find the damn manual for the thing ---
**Author:** ![G-E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/g-e/32/5546_2.png) [@G-E](https://forums.speedlife.net/u/G-E)\ **Post date:** [May 19, 2012, 1:01am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/13 "2012-05-19T01:01:36Z")
check for boost leaks too while you’re in there, do you have access to a leakdown tester? or a homedepot pipe cap + nipple diy thingy? ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [May 19, 2012, 7:41am UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/14 "2012-05-19T07:41:44Z")
I sprayed the IC piping and welds with starter fluid but couldn’t find any leaks. I was going to try and make a tester but all the PVC tubing I could find is either 2" or 3". My IC piping is 2.5" so im out of luck… ---
**Author:** ![Drift99](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@Drift99](https://forums.speedlife.net/u/Drift99)\ **Post date:** [June 7, 2012, 7:16pm UTC](https://forums.speedlife.net/t/help-me-out-with-my-kadet/222980/15 "2012-06-07T19:16:21Z")
For those who might have the same issue with their engine… it turns out one of my trany sensors are bad. I unplugged all 5 sensors and the problem is completely gone. time to get ready for the 30th!