i just bought this car off my brother who had it in his garage for about 2 years.. anyways whenever i try to hit vtec it bogs around 5k-7k rpms.. its not throwing any cels or anything.. the car has fairly high miles at 117k miles... if anyone has any ideas on what is going on, your help would be awesome.. thanks!

 

so the car sat for 2 years without runin the engine?
did you bother to do check the fluids level/condition before jumping to 7K rpms???

 

Check your oil level or condition. Vtec measures off of oil pressure, under low pressure it will not engage.

 

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good way to f*** the motor up if there is no oil.

 

i checked the oil before i started the car or anything and it looked good and clean... and he did run the engine about once a month to keep it in running condition.

 

Well, did you change the oil before you run the car that has been stored for 2 years?

I don't think there are any oil has a shelf life more than a year. Might not be a bad idea to change it out. Just because it looks clean means it still does what it's intended to.

 

change the oil, see what happens. if its still bad, you may need a vtec solenoid.

 

ok i will surely do that.. if its not the oil is the vtec solenoid the only real concern?

 

well either the solenoid or maybe the oil pump. can you do an oil pressure test on the car?
kinda weird that the cel is not on...

 

my Vtec bogged once... never did it again tho...

 

Check all your ground wiring just in case, I think one of my buddies car did that before as well, I could be mistaken though. Rats eat anything!

 

This happened to me as well - there is a bulletin on alldata for it

symptom - hesitation at high rpm

probable cause - during hard acceleration, engine vibrations may cause shifting of the contacts at the MAP sensor. this may cause wear that changes the resistance of the connection at the MAP sensor

corrective action - replace the map sensor, and install the map sensor holder (harness)

note: one tie wrap is included in the map sensor and holder kit. a replacement tie wrap is needed only if the map sensor is disconnectied during a later repair


... when this happened to me i had a look at my map sensor harness and there was about 1/16th of movement, i didnt buy a new sensor, but i zap-straped the harness tight to the map sensor

 

also.. was the car warmed up.. if you say no, just sell the car.

also make sure injectors are firing.. running off 3 cylinders won't throw a code but it sure will make a car bog