1991 3.0 engine idle erratic almost dies when rev
I have a 1991 Ranger XLT 3.0. 244,000 miles.Within the last two weeks, I started having idle issues & erratic rpms at lower speeds. The idle would waiver above & below 1000 rpm. As I reached higher speeds, it would go away. I replaced the plugs, cap, rotor, air filter & fuel filter to be safe. Today, going down the highway, the engine started losing power & caused the truck to start "bucking". I pulled over & could barely keep it running. If i pushed on the gas it would sputter & almost die. I got a tow to the house. I used my code scanner & got #14 & #18. #14 - ECA has detected an intermittent loss of PIP signal during recent operation. *18 - loss of TACH signal to ECA. I replaced the Electronic ignition module, no change. I replaced the coil, coil connector(a pin wouldn't stay in) & plug wires, still no change. I've also pulled out the spout shorting bar plug & it didn't have any effect. The engine was still idling very rough. I will check my timing, but, I'm beginning to think my distributor has gone bad. Anyone have any ideas?
Last edited by screamer141; 02-06-2010 at 01:32 PM.