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2005 Dodge Neon 2.0 issues above 3.5k RPM Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting Zipster New User May 3, 2017, 9:23 AM Post #1 of 4 (1424 views) 2005 Dodge Neon 2.0 issues above 3.5k RPM Sign In I have a 2005 Dodge Neon 2.0L with about 125K miles on it. I would rate myself as a novice mechanic, having worked on cars almost my entire life with my grandfather, but this one has me stumped. Recently (and randomly) my car will lose power and start bucking. My first thought when this happened was that I blew the head gasket, but I didn't. I checked plugs and wires (all of which I replaced only a year ago), but that didn't help. I added a fuel treatment thinking that it may have been a clogged injector, but it didn't fix the problem. Last weekend I visited family a couple hours away and had no problems the entire way, or while I was there. As I was trying to get on the freeway to go home I found that every time I tried to accelerate, I lost power and the shaking began at 3.5k rpm. Eventually, I was able to get on the highway and get home, but it meant accelerating very slow. Even when this problem occurs, which is about 25% of the time, the car idles and drives fine. It is as if there is a rev limiter that gets randomly set to 3.5k. I can't rev past it, it just gets stuck like that. If I restart the car I can rev up as much as I like, but when I put it in gear and start accelerating, the 3.5k limit kicks in and stays there until I turn it off and back on again. Any suggestions would be helpful. Thanks. Tom Greenleaf Ultimate Carjunky / Moderator May 3, 2017, 9:49 AM Post #2 of 4 (1421 views) Re: 2005 Dodge Neon 2.0 issues above 3.5k RPM Sign In Get a good code reading even if light is off for even pending codes. For now - JUST PLAIN DON'T REV AN ENGINE IN "P" OR "N" WITH NO LOAD ON IT YOU'LL BLOW IT UP WHICH IS WHY IT LIMITS RPMs so you don't, T Zipster New User May 3, 2017, 10:45 AM Post #3 of 4 (1415 views) Re: 2005 Dodge Neon 2.0 issues above 3.5k RPM Sign In Thanks for the reply. I'll stop off and see about getting a reading this week. As far as revving the engine, it was only for diagnostic purposes... I don't make a habit of it. Tom Greenleaf Ultimate Carjunky / Moderator May 3, 2017, 11:41 AM Post #4 of 4 (1407 views) Re: 2005 Dodge Neon 2.0 issues above 3.5k RPM Sign In It seems to think it should limit revs while in gear so high hopes just a sensor that tells ECM somewhere is at fault and a code will surface that circuit or help find out why. Haven't heard this one before so can't expound on something common, T   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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