Please Help. RPM's Limited and Very Slow Acceleration
#1
Please Help. RPM's Limited and Very Slow Acceleration
Hi,
I just bought a used car that had some mods done to it. I suspect that it may have had a problem from before I bought it, but recently noticed the RPM's wont go past around 3500. Even in 1st gear it stops acceleration at around 3500. The car has a rev limited pill system, with a 7k pill in it now, and when in neutral or with clutch in, I can rev to the full 7k, but when driving I get what feels like no torque, and the rpms are limited. Any ideas as to what it could be? Have already checked compression: 180 pounds, spark (I have MSD ignition) which was fine. Im really not sure where to start as the person I bought the car off of is a mechanic and has been looking at the car for over a week and has no idea. Ive read that this problem could be something with the VTEC? Can someone please please shed some light on possible problem areas because I really dont know much about cars. Oh by the way, its a 1994 ex 1.6 vtec. Any other info or if you need the whole list of mods,just ask .Thanks a ton,
Eric
I just bought a used car that had some mods done to it. I suspect that it may have had a problem from before I bought it, but recently noticed the RPM's wont go past around 3500. Even in 1st gear it stops acceleration at around 3500. The car has a rev limited pill system, with a 7k pill in it now, and when in neutral or with clutch in, I can rev to the full 7k, but when driving I get what feels like no torque, and the rpms are limited. Any ideas as to what it could be? Have already checked compression: 180 pounds, spark (I have MSD ignition) which was fine. Im really not sure where to start as the person I bought the car off of is a mechanic and has been looking at the car for over a week and has no idea. Ive read that this problem could be something with the VTEC? Can someone please please shed some light on possible problem areas because I really dont know much about cars. Oh by the way, its a 1994 ex 1.6 vtec. Any other info or if you need the whole list of mods,just ask .Thanks a ton,
Eric
#4
safe mode is when the ecu read a sensors thats not within spec... thus switching you in like a limp mode/ safe mode so you dont hurt the motor... i say check the vss because thats what happened when i did my jdm swap on my subie... lemme talk to some of my tech that i know and the shop i work at and ill let you know what might be the problem
#5
Thanks very much. Anyone else have any input on possibilities?
So far my list of possibilities:
Distributor
Fuel Pump/filter
VSS Sensor
Something VTEC??
ECU??
Any suggestions would be greatly appreciated.
So far my list of possibilities:
Distributor
Fuel Pump/filter
VSS Sensor
Something VTEC??
ECU??
Any suggestions would be greatly appreciated.
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#8
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Re: (btk2334)
My 2000 civic did they same thing last week, I Un bulteed the cat and it ran perfect. Meaning my cat got clogged after swapping in my low comp GSR.
I bet you cat is clogged
I bet you cat is clogged
#9
The car has no cat on it now. Previous owner had straight pipe exhaust made right after inspection. I suspect he may have had this issue before and removed the cat to try to fix it. But its def not that. Any other ideas peoplesss?
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chinewalker
Honda Civic / Del Sol (1992 - 2000)
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09-28-2009 09:17 PM