Question about 1994 Mazda Protege

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Won't idle Have to rev the engine to keep it running.

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  • nitehawk_1 Aug 06, 2008

    won't idle in drive and is sluggish on acceleration is reall choppy until rpms go up


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There are a few possible causes to this problem. Your throttle position sensor could be going out, your  mass air flow sensor could be terribly dirty or going bad too. Check your air filter if it is dirty you are basically starving your engine of air. The last thing I can think of right now is that your fuel injectors are getting dirty and clogged. That happened to me- same symptoms and everything and I performed a fuel injector cleaning service on my car and it cleared up the problem.  I would say go with the first 2 possibilities as a last resort since they are expensive.  Try going to your local mechanic or lube joint and having them doing a fuel injector cleaning. Not only will it clean you injectors but it will clean up the carbon build up off of your valves and pistons which can also contribute to this problem. This cleaning generally costs around 50 bucks but it is definitely cheaper than the latter. If you take your prote to a good reputable mechanic he/she will also take a look at other things as well and maybe they will find another possible solution to your problem.  Also, check your spark plugs and wires. If they are bad, they could contribute to this problem as well. HOWEVER, if your spark plugs are horribly corroded or really black, there is a bigger problem than stated above. I hope this helps a bit!

Posted on Mar 10, 2009

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Try doing a tune up on it. plugs,wires,cap and rotor.

Posted on Aug 01, 2008

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