It wont start unless i give iut some gas and have to hold the gas pedal down for it to remain running if it stays running idles low around 200rpm checked for vacume leaks couldnt find anything not pulling any codes any ideas
Sounds to me like your catalytic converter may be clogged.
Testimonial: "How exactly could I check that?"
Not very easy, you would have to remove upstream oxygen sensor then install backpressure gauge, any reading higher than 1 psi of acupressure indicates clogged converter. I really recommend having a trustworthy technician experience your issue and get his opinion.
backpressure not acupressure,:0
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SOURCE: car wont stay running unless foot is on the gas
Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor, throttle positioning sensor, and the MAF and MAP sensors. Best diagnosed by using an OBDII scanner to scan for codes. If no codes are present I would then check for the pressure coming from the fuel pump to make sure it is still functioning.
Check and clean Idle air control valve. Make sure its responding to signal as well. Also make sure ther are no vacuum hoses disconnected. This may not be a "cure" but it's a good place to start.
SOURCE: starts but dies as soon as i let off the gas wont
replace the gas filter just follow the gas line of the carb it should be easy to find
SOURCE: 1997 ford expedition will start
if code keeps coming up re check sensor and connections and if not done replace air filter ----if good than check fuel prssure sometimes clodding fuel filter can cause same problem and set off sensor
SOURCE: I have ruff idle on start and wont stay running
is there a check engine light on check the codes but most likely it is the idle air valve located on the top of the intake by the throttle body valve usually runs about 85 dollars
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