problem with engine and check engine light
#1
problem with engine and check engine light
i recently just purchased a 1990 ranger, 2wd, 2.3L standard ranger with 158,000 miles on it. after some repairs to brakes and other components im beginning to work all the problems out of it. the problem i am having now is that it runs good when i first start it up and for about the first 10-15 minutes i drive it. after that, the check engine light comes on. if i drive more than 20-25 minutes the engine begins to stutter at times and when i shift gears. kind of sputters then kicks back on with power. any advice on what the problem could be or where to start trouble shooting
#2
First get the codes read. It's a 1990 so you have OBD I . Got a Haynes manual ? It shows how to pull the codes.
Since it runs fine while cold (Open loop mode) and stutters after the engine is warmed up (Closed loop mode) I'm going to say it's a bad O2 sensor or an ignition coil getting hot and opening up inside.
Since it runs fine while cold (Open loop mode) and stutters after the engine is warmed up (Closed loop mode) I'm going to say it's a bad O2 sensor or an ignition coil getting hot and opening up inside.
#3
#4
#6
Try the search button for OBD1 codes. You may have to wade through a bunch of stuff , but i'm sure the procedure is there somewhere to pull the codes.
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