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

 

check if your vss (vehicle speed senor) is hooked up and or broken.... sounds like you are in safe mode... oh btw forgot to ask... does your speedo work?

 

Yes the speedo works fine. Could you elaborate a little more about "safe mode" and what component could have caused this?

 

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

 

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.

 

sounds like safe mode to me knock sensors usally get broke and do this

 

94 ex = no knock sensor

... so its not that

 

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

 

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?

 

find another ecm and swap them

 

Any other suggestions peoplesss?