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02-12-2008, 04:43 PM | #1 | |
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92 240sx Acceleration problem.
I bought my car about a year ago, when i first test drove it it ran great, it was pretty peppy and put a smile on a 16 year old's face. Anyway it sat for about 6 - 8 months while i was gathering the cash for registration/insurance, once i finally had enough and got it on the road it was much slower than it was before. What's happening is that when i accelerate it kinda bogs down, when i rev it in neutral it's fine, if im driving on grass or loose dirt it also seems much better, it seems to only be a problem when it's under load. I did a burnout with it when i first got it just for S's & G's and it suprised me, so after i got it on the road and started noticing this problem i decided to rev it up and pop the clutch, and upon doing this the tires let out a quick chirp and the engine bogged down almost to a stall. Also when i first got the car i took it up to the spped limiter (115), and now i can carely get it to 100. Don't get the wrong idea im not a crazy jackass driver, i don't haul ass in heavy traffic or in mild traffic for that matter, any time i ever go fast is on a backroad with no houses or poeple that could potentialy be hurt and iv'e only done this a few times just to compare it to the way it was when i first bought it. Now iv'e already replaced the fuel filter aswell as the cts (coolant temp sensor) and it's not a clutch problem, so if anybody can give me advice on what could possibly be causing this i would really appretiate it, i want to do a ka-t build with it but not untill i solve this problem.
Sorry for the double post, but the technical forum doesn't seem very active. |
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02-13-2008, 03:17 PM | #2 | |
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Re: 92 240sx Acceleration problem.
ummm thats a pretty vague description. thats the hard part about forum help. most people dont have a clue, and those who do fix it themselves. that said, is it running on all 4 cylinders? do you have any DTCs? just my intuition, i would look to see if all the injectors are functioning properly. then do a compression check, spark check, fuel pressure check, and timing check. let me know what you see from these tests.
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02-13-2008, 06:20 PM | #3 | ||
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Re: 92 240sx Acceleration problem.
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02-15-2008, 12:01 AM | #4 | ||
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Re: 92 240sx Acceleration problem.
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02-15-2008, 02:47 AM | #5 | ||
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Re: 92 240sx Acceleration problem.
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02-15-2008, 04:54 PM | #6 | |
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Re: 92 240sx Acceleration problem.
if your running on all 4 cylinders, it seems like its a fuel management/engine sensor issue. if your gonna tackle this yourself i recommend at least getting a chilton manual. i dont think in 92 that the dash had a check engine light but im not 100% sure. you should be able to manually pull any codes from the CPU using a method in the previously mentioned repair manual.
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02-16-2008, 03:37 AM | #7 | ||
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02-19-2008, 12:18 AM | #8 | ||
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02-20-2008, 10:47 AM | #9 | |
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Re: 92 240sx Acceleration problem.
are you sure its not a clutch problem? or a CMC problem? sorry for the swing and miss its hard to diagnose things over the net.
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02-20-2008, 04:58 PM | #10 | ||
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