1997 chevy 2500 4x4 stumbles

Acceleration cut off when reach 30mph - Range Rovers

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Mar 30, 2010 - 16 posts - ‎6 authors
All of a sudden, RRSport HSE 2006 can not speed above 30mph. ... It's only an hour's drive away if your car could go straight upwards. .... My guess is that some control module got fried or out of whack when the power spike ...

WILL NOT GO OVER 30MPH WITH PEDLE TO METAL ...

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... and a 18 wheeler comes up behind me going 85mph. or more and my car drops down to 35 to 40. ... It would not let me go pass 30mph and it would bog out. .... His truck was barely over 36k. when this happened. ... sudden I was cruising at 30 more or less and could not accelerate or shift gears I could just switch to Drive.

My Chevy Silverado won't go over 25 miles an ... - CarGurus

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CarGurusSep 19, 2012 - His response wasn't even there until the page refreshed when I hit ...The engine would shut off due to a clogged fuel filter not hit 25 MPH and just stopaccelerating. ... when the gas pedal was to the floor but it wouldn't go over 30 MPH?.... When I punch it at 110 or above, it will cut out and drop to 103kph, ...

Starts,Idols perfect Bogs down, no power upon acceleration ...

Could be any number of different thing's . Have thrity years as automotive technician . Started in 1984 at first GM dealership - chevy . Dirty throttle plate , IAC air passages- probably not - wouldn't do it one time then not the next . TPS - throttle postion sensor - maybe .Sticking EGR valve Taking your vehicle to a qualified repair shop that has the proper diagnostic equipment an knowledge . Testing an not guessing is the way to a proper fix.
007 Idle Speed Problems Scan Data for Idle

have you checked for clogged converters ?

Clean the mass air flow meter.

Sounds to be a faulty TPS sensor (Throttle position sensor ).02 sensor (Oxygen Sensor will have kinda same affect but not as bad...>>>Hope this helps.................metalpoet

I would see if the EGR valve is stuck open.

Have you checked for any codes? Is the check engine light on? If there is any codes it will give you an idea of what to look for.

Faulty idle air control valve. Fuel filter clogged. Damaged or wet ignition system wires. Faulty idle control system. Low fuel pressure. Ignition timing or timing chain.

Check the distributor shaft. They have a history of developing finite cracks that causes the condition your describing. Let me know if I can help you with any other info.

4.2 ltr missing. 2000 truck, f150. Changed plugs, wires. Ran great for 2 weeks. Started again. Changed coils. Got worse. Changed fuel filter, did nothing. Added injector cleaner and fuel cleaner, nothing. Checked EGR, o.k. It is getting worse. Had new gas about the time it all started.