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#1
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Rich exhaust/mix in 93 lumina
I have a 93 Lumina Euro 3.1 with rich smelling exahust created by
runnig way too rich. Exahust is black in color and has an almost in between gas/vinegar odor. Low power seems like it is runing on two cylinders. Some more background engine has been locked up. However, compression is still seemingly fine acording to haynes manual 115-120 PSI on first comp stroke. After unseizing engine it ran fine for a few months delivering mail on a rural route (yikes!). Catalytic converter has been suspect and eliminated. Trouble Codes: 15: Colant Sensor low (Replaced) 23: IAT Sensor in this model (Replaced) 35: Idle Speed error replace IAC (Replaced) 43: Electronic Spark Control/Knock Sensor(Replaced) 53: EGR Valve (Not Replaced but cleaned and new gaskets no longer Leaking) Also new plugs, wires and coils. Also two weeks ago i was cheking the ignition system control module with test in haynes manual and all cheks out. After doing that I cleaned up the spark pulgs again (they foul in about ten minuteswith carbon) I hooked everything up and started it and it ran fine for two hours thourgh various performance ranges. Next morning pull #2 Plug and it looked cleaner than when I put it in the night before, put it back and try to start and same problem starts again running rough and rich exhaust. Talked to some one who works at ford as a mechaninc and he said try the O2 sensor. I did and no change. I have tried to eliminate as many possibilites as I can but this seems to be and intermitant problem (our favorite kind) and like that friday evening if the stars are all alinged (which has nothing to do with it ) she runs. Any more suggestions. |
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#2
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Rich exhaust/mix in 93 lumina
Check the fuel pressure a bad regulator could cause this, I believe you have
a map sensor, check for no vacuum to it, scan it and check the coolant temp readings when warmed up. "bsquared" > wrote in message oups.com... >I have a 93 Lumina Euro 3.1 with rich smelling exahust created by > runnig way too rich. > Exahust is black in color and has an almost in between gas/vinegar > odor. Low power seems like it is runing on two cylinders. Some more > background engine has been locked up. However, compression is still > seemingly fine acording to haynes manual 115-120 PSI on first comp > stroke. After unseizing engine it ran fine for a few months delivering > mail on a rural route (yikes!). Catalytic converter has been suspect > and eliminated. > Trouble Codes: > 15: Colant Sensor low (Replaced) > 23: IAT Sensor in this model (Replaced) > 35: Idle Speed error replace IAC (Replaced) > 43: Electronic Spark Control/Knock > Sensor(Replaced) > 53: EGR Valve (Not Replaced but cleaned and new > gaskets no longer > Leaking) > > Also new plugs, wires and coils. > > Also two weeks ago i was cheking the ignition system control module > with test in haynes manual and all cheks out. After doing that I > cleaned up the spark pulgs again (they foul in about ten minuteswith > carbon) I hooked everything up and started it and it ran fine for two > hours thourgh various performance ranges. Next morning pull #2 Plug and > it looked cleaner than when I put it in the night before, put it back > and try to start and same problem starts again running rough and rich > exhaust. Talked to some one who works at > ford as a mechaninc and he said try the O2 sensor. I did and no change. > I have tried to eliminate as many possibilites as I can but this seems > to be and intermitant problem (our favorite kind) and like that friday > evening if the stars are all alinged (which has nothing to do with it ) > she runs. Any more suggestions. > ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#3
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Rich exhaust/mix in 93 lumina
Whenever I have a problem like yours I like to get dynamic
readings, your car is OBD I but you might have a data stream feature with a scanner. I would hook up a scanner and run car and you can look at what computer is reading from sensors. Look for any unusual readings at idle, during warm up etc. I have heard of bad fuel pressure regulators as other poster said hook up a clear plastic tube in place of black rubber vaccuum tube and look for any fuel in tube (busted diaphram), it could be intermitant so look for a while under various rpms. bsquared wrote: > I have a 93 Lumina Euro 3.1 with rich smelling exahust created by > runnig way too rich. > Exahust is black in color and has an almost in between gas/vinegar > odor. Low power seems like it is runing on two cylinders. Some more > background engine has been locked up. However, compression is still > seemingly fine acording to haynes manual 115-120 PSI on first comp > stroke. After unseizing engine it ran fine for a few months delivering > mail on a rural route (yikes!). Catalytic converter has been suspect > and eliminated. > Trouble Codes: > 15: Colant Sensor low (Replaced) > 23: IAT Sensor in this model (Replaced) > 35: Idle Speed error replace IAC (Replaced) > 43: Electronic Spark Control/Knock > Sensor(Replaced) > 53: EGR Valve (Not Replaced but cleaned and new > gaskets no longer > Leaking) > > Also new plugs, wires and coils. > > Also two weeks ago i was cheking the ignition system control module > with test in haynes manual and all cheks out. After doing that I > cleaned up the spark pulgs again (they foul in about ten minuteswith > carbon) I hooked everything up and started it and it ran fine for two > hours thourgh various performance ranges. Next morning pull #2 Plug and > it looked cleaner than when I put it in the night before, put it back > and try to start and same problem starts again running rough and rich > exhaust. Talked to some one who works at > ford as a mechaninc and he said try the O2 sensor. I did and no change. > I have tried to eliminate as many possibilites as I can but this seems > to be and intermitant problem (our favorite kind) and like that friday > evening if the stars are all alinged (which has nothing to do with it ) > she runs. Any more suggestions. |
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