ranzerbinz
Member
1985 ford ranger
2.3l, 4 cylinder, fuel injected. EEC-IV computer. 32,000 original miles.
Having issues with idle ONLY at operating temps and a strange howling noise in crankcase area, only at passing temps as well. I am pretty mechanically inclined and have done quite a bit of work to the engine all ready. But I'm struggling to figure out what is going on.
So far, I have replaced every gasket (intake manifold gaskets, egr gasket, valve cover gasket, throttle body gasket). I've replaced the pcv and hose. All vacuum hoses were checked with a vacuum test gauge and passed. I've done a compression test to all 4cyl. Only number 3 cyl was slightly low, but well within specs. All 4 fuel injectors were replaced and wiring harness. New fuel regulator. New fuel filters. Throttle body cleaned. New air filter. New oil and oil filter. Checked all electrical wiring for bad Grounds. Checked ok. New water pump and tstat. New plugs and wires. New rotor and cap. New timing belt and engine belt. Timing set to ford engine specs. 10degrees btdc. New coolant, air temp and oil sensor. Battery putting out a constant 14volts during engine operation. 12volts off. I may be missing some stuff in there, but you can see I've done some work, but still can't resolve the idle issue during operating temps. Cold start it runs mint. As soon as it hits operating temp, it starts to idle rough and a strange howling noise appears down in crank area. Sometimes it will stall out. And when i go to goose the throttle it will hesitate and then accelerate. No emissions light appears on dash, so good there. I did check the computer for any codes with my automotive light tester. Only code is, a 31 or 32 I believe, for a low voltage signal to egr during test sequence. All wiring is ok to it. Not sure if it's computer issue or something I'm totally missing. I think the computer may be running the engine too lean with fuel. Hoping I could get some insight with someone very familiar with the 2.3l. My guess is something totally stupid I've missed. Ha! Open to any suggestions. Thanks so much.
Derek
Sent from my SM-G930V using Tapatalk
2.3l, 4 cylinder, fuel injected. EEC-IV computer. 32,000 original miles.
Having issues with idle ONLY at operating temps and a strange howling noise in crankcase area, only at passing temps as well. I am pretty mechanically inclined and have done quite a bit of work to the engine all ready. But I'm struggling to figure out what is going on.
So far, I have replaced every gasket (intake manifold gaskets, egr gasket, valve cover gasket, throttle body gasket). I've replaced the pcv and hose. All vacuum hoses were checked with a vacuum test gauge and passed. I've done a compression test to all 4cyl. Only number 3 cyl was slightly low, but well within specs. All 4 fuel injectors were replaced and wiring harness. New fuel regulator. New fuel filters. Throttle body cleaned. New air filter. New oil and oil filter. Checked all electrical wiring for bad Grounds. Checked ok. New water pump and tstat. New plugs and wires. New rotor and cap. New timing belt and engine belt. Timing set to ford engine specs. 10degrees btdc. New coolant, air temp and oil sensor. Battery putting out a constant 14volts during engine operation. 12volts off. I may be missing some stuff in there, but you can see I've done some work, but still can't resolve the idle issue during operating temps. Cold start it runs mint. As soon as it hits operating temp, it starts to idle rough and a strange howling noise appears down in crank area. Sometimes it will stall out. And when i go to goose the throttle it will hesitate and then accelerate. No emissions light appears on dash, so good there. I did check the computer for any codes with my automotive light tester. Only code is, a 31 or 32 I believe, for a low voltage signal to egr during test sequence. All wiring is ok to it. Not sure if it's computer issue or something I'm totally missing. I think the computer may be running the engine too lean with fuel. Hoping I could get some insight with someone very familiar with the 2.3l. My guess is something totally stupid I've missed. Ha! Open to any suggestions. Thanks so much.
Derek
Sent from my SM-G930V using Tapatalk