DTC P0120 P0220 P1516 P2135 these should be the problem codes.
2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer. for reduced engine power. p0120 is throttle position sensor, ( tps ). p0220 is relates to tps, p1516 tps is out of range. p2135 is a throttle body code, the throttle body needs replaced. but before you do it replace tps first to see if it takes care of the other codes. have a good day !!
SOURCE: my 2001 lincoln ls is sputtering at 40-50
Replace fuel filter, remove replace plugs, check plug wires, by removing one at a time and checking for spark, add some fuel injector cleaner, about a quart. One small can to 20 gal of gas or more is a waste of your money.
SOURCE: after running 70-75 mph for for 2-3 min service
a flashing check engine light means a misfire, you should go to one of your local parts stores and have them read your code. your code will tell you which cylinder was misfiring and if there are any other codes that may also be related to your problem. but it could need anything from a fuel filter to a catalytic conveter or just a tune-up, getting those codes could greatly narrow it down
Testimonial: "i have a random cylinder missfire in #1 & #5 so i'm replacing coil pack's to try to eliminate "
SOURCE: I had my engine light come on with a
engine was sent into what they call the limp mode ...because................ either your tranny or engine has issues.....run your trouble codes and check your tranny fluid
SOURCE: service engine light comes on at 50 mph after i
Ths is more than likely a signal from one of yoour 02 sensors. On deceleration your engine is not burning any fuel at absolute efficiency. If the cat converter doesn't burn off the excess unburned fuel the 02 sensor indicates something is wrong. It needs to be chked with an exhaust analyxer to determine if the fuel is too rich or the converter is failing. Good Luck
SOURCE: the reduced engine power light comes on at 50 mph
A lot of times this is a dirty throttle body, possibly sticking at this mph. Clean with battery disconnected with throttle body cleaner. Must be nice and shiny. If the throttle body isn't functioning correctly or it's filthy, reduced engine power light will go on to act as a safe mode.
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