# any thoughts? **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [April 26, 2004, 8:00pm UTC](https://forums.speedlife.net/t/any-thoughts/165997 "2004-04-26T20:00:10Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![TwoForty](https://avatars.discourse-cdn.com/v4/letter/t/5f9b8f/32.png) [@TwoForty](https://forums.speedlife.net/u/TwoForty)\ **Post date:** [April 26, 2004, 8:00pm UTC](https://forums.speedlife.net/t/any-thoughts/165997/1 "2004-04-26T20:00:10Z")
my car is a 90 240sx with a ka24e first off. heres my problem: my car will only rev to 5000 RPMs in 3rd and 4th gear and 3700 in 5th gear. when it hit that area the car jerks violently so im assuming its a fuel cut out then once it drops to 3000 rpm it will run fine. i am either thinking its the MAF or an o2 sensor? any ideas?comments:confused: 😕 ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [April 26, 2004, 8:08pm UTC](https://forums.speedlife.net/t/any-thoughts/165997/2 "2004-04-26T20:08:20Z")
clogged cat, timing ---
**Author:** ![TwoForty](https://avatars.discourse-cdn.com/v4/letter/t/5f9b8f/32.png) [@TwoForty](https://forums.speedlife.net/u/TwoForty)\ **Post date:** [April 26, 2004, 8:10pm UTC](https://forums.speedlife.net/t/any-thoughts/165997/3 "2004-04-26T20:10:41Z")
hmm…that might be it! isnt the rotten egg smell the sign of a bad cat? ---
**Author:** ![danteisme](https://avatars.discourse-cdn.com/v4/letter/d/ba8739/32.png) [@danteisme](https://forums.speedlife.net/u/danteisme)\ **Post date:** [April 26, 2004, 11:08pm UTC](https://forums.speedlife.net/t/any-thoughts/165997/4 "2004-04-26T23:08:14Z")
> _Originally posted by TwoForty_ > **hmm…that might be it! isnt the rotten egg smell the sign of a bad cat?** last i checked yessuh. you can get it tested too, i had mine tested once, they drill a hole in it to see if its clogged. ---
**Author:** ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars)\ **Post date:** [April 27, 2004, 5:51am UTC](https://forums.speedlife.net/t/any-thoughts/165997/5 "2004-04-27T05:51:09Z")
bad maf:confused: ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [April 27, 2004, 5:53am UTC](https://forums.speedlife.net/t/any-thoughts/165997/6 "2004-04-27T05:53:01Z")
fuel filter ---
**Author:** ![imported\_SINISTER](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_sinister/32/5970_2.png) [@imported\_SINISTER](https://forums.speedlife.net/u/imported_SINISTER)\ **Post date:** [April 27, 2004, 5:55am UTC](https://forums.speedlife.net/t/any-thoughts/165997/7 "2004-04-27T05:55:30Z")
can be a number of things i say try the fuel filter first wont hurt you to change it how many miles are on the car ---
**Author:** ![TwoForty](https://avatars.discourse-cdn.com/v4/letter/t/5f9b8f/32.png) [@TwoForty](https://forums.speedlife.net/u/TwoForty)\ **Post date:** [April 27, 2004, 9:00am UTC](https://forums.speedlife.net/t/any-thoughts/165997/8 "2004-04-27T09:00:22Z")
> _Originally posted by Pewterss_ > **fuel filter** i just changed the fuel filter about 2 weeks ago! i was reading on [240sx.org](http://240sx.org) that when the MAF goes bad that it puts the ECU into safety mode and wont let you rev high. my car has 180k :eek: ---
**Author:** ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars)\ **Post date:** [April 27, 2004, 9:21am UTC](https://forums.speedlife.net/t/any-thoughts/165997/9 "2004-04-27T09:21:52Z")
🆒 ---
**Author:** ![rusty240det](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rusty240det/32/5946_2.png) [@rusty240det](https://forums.speedlife.net/u/rusty240det)\ **Post date:** [April 27, 2004, 9:38am UTC](https://forums.speedlife.net/t/any-thoughts/165997/10 "2004-04-27T09:38:26Z")
junk it…get a det swap…gimme a call ---
**Author:** ![TwoForty](https://avatars.discourse-cdn.com/v4/letter/t/5f9b8f/32.png) [@TwoForty](https://forums.speedlife.net/u/TwoForty)\ **Post date:** [April 27, 2004, 9:43am UTC](https://forums.speedlife.net/t/any-thoughts/165997/11 "2004-04-27T09:43:12Z")
> _Originally posted by rusty240det_ > **junk it…get a det swap…gimme a call** im hopefully gettin there but i got to prepare the car for it first with some suspension, LSD and brake upgrades plus funds arent where they need to be! 🙂 wanna sponsor a car;) ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [April 27, 2004, 9:53am UTC](https://forums.speedlife.net/t/any-thoughts/165997/12 "2004-04-27T09:53:48Z")
> _Originally posted by TwoForty_ > **my car is a 90 240sx with a ka24e first off.** Take it to the I-79 bridge and go through the barrier into the river… :blue: :itr41: :blue: