I changed the accelerator pedal position sensor and the throttle position sensor but it still does the same thing.
SOURCE: 4.9 liter will idle but wont accelerate have to start with ether
yes checked fuel pressure and replaced the fuel filter, checked the mapp sensor,tested throttle position sensor, has strong spark, 50psi fuel pressure, fresh tune up, runs real rich and rough idle but wont rev up like fuel injectors arent speeding up, also checked exhaust. thanks julius
SOURCE: Rough idle until warm
HMM, ya ont get a code unless ya figure out how to read the morse code values the OB1's use. Hmm sputters, and rough idle can be from poor air circulation, as well fuel delivery.
first air.......inspect and clean your vacuum hoses, cracks and leaks will most notably ruin your day. as well as the performance of your ride. check the seal for your intake hose around the throttle body, then clean the ports in and around your throttle body as well. Bad air supply, poor idle.. follow me..
second is fuel delivery. Your getting your gas, thats evident, but are you getting the required amount. hard to guage unless you disconnect a line and test its pressure. so lets USE the KISS method.. KEEPING IT SIMPLE STUPID
first, check and or replace your fuel pressure regulator...
second, inspect condition of your fuel filter.
thrid, and certianly the last thing, your fuel pump. go in that order. or your gonna seriously annoy yourself when a 5 dollar fix turns into a 3-400 dollar fix.
SOURCE: 94 Fleetwood hesitates and dies going up a hill (12 - 15 mph)
Sounds like A MAP sensor or a bad fuel Pump. Good Luck
SOURCE: 93 Nissan Altima idles rough and has no power.
check exhaust back pressure . can have no more than 2 to3 inch pounds off pressure. may also want to check timing marks.
SOURCE: 95 f250 7.3 is throttle position sensor on the pedal
i have a f350 ps and it starts and idles but i have no throttle nothing happens when i push the pedal and the check engine light comes on
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