# SR Choking after warm up
**URL:** https://forums.speedlife.net/t/sr-choking-after-warm-up/120683
**Category:** SON240sx Automotive
**Created:** [December 20, 2008, 3:28pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683 "2008-12-20T15:28:29Z")
**Posts on this page:** 18
**Page:** 1
### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 20, 2008, 3:28pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/1 "2008-12-20T15:28:29Z")
I dont’ know why my SR engine is choking after the car is warm up… if I rev the rpm is choke around 2000-3000 rpm…
anyone know what is the problem??? will it be the coil pack or will it be sensor???
I know the engine is running rich… dont’ know will it be coil pack miss firing or some sensor isn’t deteching right after the car is warm up and give too much gas to the engine and making it choke… help!!!
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### Author:  [@BELONTAY\_TYPE-M](https://forums.speedlife.net/u/BELONTAY_TYPE-M)
#### Post date: [December 20, 2008, 3:33pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/2 "2008-12-20T15:33:09Z")
sounds like MAF?
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### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 20, 2008, 3:39pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/3 "2008-12-20T15:39:50Z")
because I just got my engine swap and pick up the car… the mech said is the coil pack… but he didn’t seems like a honest person
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### Author:  [@Hurricane](https://forums.speedlife.net/u/Hurricane)
#### Post date: [December 20, 2008, 6:08pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/4 "2008-12-20T18:08:02Z")
Look for leaks in the intake tract somewhere.
Is it missing under free reving or under load?
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### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 20, 2008, 7:36pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/5 "2008-12-20T19:36:29Z")
it is missing after I have been driving on the road… but if I leave it running for long (which I try today) is not as bad… but under load for sure it will miss
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### Author:  [@S13GG](https://forums.speedlife.net/u/S13GG)
#### Post date: [December 21, 2008, 5:41am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/6 "2008-12-21T05:41:03Z")
pull your coil packs out 1 by 1,
inspect the bodies for cracks that run up/down the neck above the rubber for the spark plug.
If they are cracked, I may be inclined to agree with your mech…
there is also a test procedure in the SR FSM IIRC for coil packs, measure resistance to test?
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### Author:  [@Keez](https://forums.speedlife.net/u/Keez)
#### Post date: [December 22, 2008, 12:12pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/7 "2008-12-22T12:12:41Z")
i have 4 coilpacks here, come pull yours out, put mine in. if it fixes the problem you can either buy the ones i have or find somewhere else.
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### Author:  [@Sky14](https://forums.speedlife.net/u/Sky14)
#### Post date: [December 22, 2008, 12:25pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/8 "2008-12-22T12:25:40Z")
didnt u get ur swap at purautomotive?
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### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 22, 2008, 7:00pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/9 "2008-12-22T19:00:30Z")
yup
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### Author:  [@Keez](https://forums.speedlife.net/u/Keez)
#### Post date: [December 23, 2008, 2:23am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/10 "2008-12-23T02:23:35Z")
i know it mite be a hard process putting a sr in, and they may have hit the main coil pack harness off of the back of your firewall. it could have damaged one of your coil pack wires. id inspect that area also.
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### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 23, 2008, 9:11pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/11 "2008-12-23T21:11:19Z")
thz thz I will do that tomorrow
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### Author:  [@Specialedition](https://forums.speedlife.net/u/Specialedition)
#### Post date: [December 29, 2008, 6:24am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/12 "2008-12-29T06:24:03Z")
sounds like a maf. Check if its plugged in properly. Also wouldnt the people doing the swap have to have the motor running minty considering its under warrenty right
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### Author:  [@lemon](https://forums.speedlife.net/u/lemon)
#### Post date: [December 31, 2008, 12:35pm UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/13 "2008-12-31T12:35:33Z")
well… I don’t think they did a good job on the engine… and also I change the coil pack and the problem is till there so I believe is something else… one more thing… I dont’ know my car idle so high even the car is warm up… is there some senior that they miss to connect so that it cost that problem… and I know the car is running rich
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### Author:  [@dubv](https://forums.speedlife.net/u/dubv)
#### Post date: [January 7, 2009, 6:21am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/14 "2009-01-07T06:21:17Z")
check your MAF … are you running smic or fmic? check for boost leaks…
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### Author:  [@Specialedition](https://forums.speedlife.net/u/Specialedition)
#### Post date: [January 7, 2009, 7:14am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/15 "2009-01-07T07:14:53Z")
try your cas its probably over heats and then boggs your engine down to cool it self
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### Author:  [@slipperysilvia](https://forums.speedlife.net/u/slipperysilvia)
#### Post date: [January 7, 2009, 7:24am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/16 "2009-01-07T07:24:49Z")
call me and ill give u a few diagnostic tips over the phone…hopefully it helps
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### Author:  [@Specialedition](https://forums.speedlife.net/u/Specialedition)
#### Post date: [January 7, 2009, 7:32am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/17 "2009-01-07T07:32:19Z")
> [@FS: Shaved and Stripped B series valve cover](https://forums.speedlife.net/t/fs-shaved-and-stripped-b-series-valve-cover/17844/11):
>
> well… I don’t think they did a good job on the engine… and also I change the coil pack and the problem is till there so I believe is something else… one more thing… I dont’ know my car idle so high even the car is warm up… is there some senior that they miss to connect so that it cost that problem… and I know the car is running rich
go back to the guys who did your swap and tell them to fix it. Engine swaps are under warrentee for atleast 30 days
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### Author:  [@OneEightZero](https://forums.speedlife.net/u/OneEightZero)
#### Post date: [January 7, 2009, 10:09am UTC](https://forums.speedlife.net/t/sr-choking-after-warm-up/120683/18 "2009-01-07T10:09:36Z")
Sounds like MAF 100%, my 180sx had same problem