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2.3L ('83-'97) 97 2.3 ranger starts but stalls unless foot on the gas


dgaskins216

Active Member
Joined
Nov 29, 2024
Messages
35
Reaction score
1
Location
South Carolina
Vehicle Year
1997
Make / Model
Ford ranger 2.3
Transmission
Automatic
I have a 97 2.3 ranger that has started having some problems recently, It started with staring rough and sputtering a little when cold out, then it got to where it would stall when you shifted into gear unless it was warm or you gave it some gas at the same time as shifting. here recently it doesn't want to stay running at all unless you are giving it gas, at every red light or stop sign it stalls. when in motion it runs great. I just changed the spark plugs, air filter, fuel filter, and iac and fuel pump is less than 5 months old. took it to a family friend mechanic and he is completely stumped as to what I could be. it is throwing the following codes p0172, fuel system rich bank 1, p1121 tp sensor inconsistent with MAF, p1504 iac circuit malfunction, and there was another one for iac over speed that I can't remember the code for, I should also add I replaced PVC valve and grommet and repaired any vaccuum leaks I could find. another weird thing is it tries to run a little better if I pinch the vacuum hose coming from the bottom of the throttle body, I'm new to this so sorry if I didn't explain it well. I just can't figure out why it keeps flooding itself out, any ideas?? thank you in advance
 

dgaskins216

Active Member
Joined
Nov 29, 2024
Messages
35
Reaction score
1
Location
South Carolina
Vehicle Year
1997
Make / Model
Ford ranger 2.3
Transmission
Automatic
I should also probably add I did adjust what I thought was the idle screw to turn the idle up a little bit and that helped for a little but now idle does not change when unplugging the iac, I did verify power at the iac plug.. I think... one side lit up the rest light
 

E.B.N.S

Member
Joined
Jan 16, 2024
Messages
16
Reaction score
2
Location
North Carolina
Vehicle Year
1994
Make / Model
Mazda B2300
Transmission
Automatic
I should also probably add I did adjust what I thought was the idle screw to turn the idle up a little bit and that helped for a little but now idle does not change when unplugging the iac, I did verify power at the iac plug.. I think... one side lit up the rest light
I believe if you unplug the iac valve and your idle stays the same its a good chance it's that. you can also try to clean the iac valve with some brake cleaner just make sure you don't get the brake cleaner in the valve mechanism.
 

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