Stuttering under acceleration, rpm hunting at idle

Asked by GuruFTGCR Apr 19, 2020 at 12:10 PM about the 1990 Ford F-150

Question type: Maintenance & Repair

1990 F150 5.0. Map sensors
continuously go bad. Change the map
sensor runs fine for a while. AIC, TPS,
EGR, EVP, all test it to be good. They
replaced a few just to calm my nerves.
Play idea why he's coming change the
map sensor she runs fine for a while?

2 Answers

GuruFVH72 answered 4 years ago

just wondering MAP sensor....I changed MAF sensor yesterday don't know if same thing...mine is 1990 F150 in-line 6 it was fouling spark plugs.. idiling eractily when changed MAF it smooth it out...when change gears rpm jumps up changed the IAC that solved that...year playing with the idle yesterday one hour idle great....know got pinging during acceleration...warms up it goes away just a slight barly hear it..but it sounds 100% better.....like to know if it started messing up by something went wrong or did it just start over night....thanks

Mark helpful

GuruFVH72 answered 4 years ago

I have 1990 F150 in-line 6....I had same problem...I would like to know if your problem started by overtime or overnight

Mark helpful

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