My engine management light is on as soon as my car is turnd on it comes on I got it cud od bin the lamva senve or mass air flow sencer ic changed thm both and had a new thermostat in and reset the vattery to see if it wud work but its stil on it only goes to 5000 revs and it topibg out at 100 any ideas plaz help there shud be gettibg aleast 120 130