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Info Request
May 01, 2007 12:06 a.m. (2 minutes and 48 seconds later)
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Hi, welcome to jA. - What year, make, and model is your vehicle?
- How many miles are on it?
- Is the check engine lamp on? Was it on before?
~Rip
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Reply
Sent May 01, 2007 10:15 a.m. (10 hours and 9 minutes later)
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1997 900 S 2.3L engine. ECU original is at 124k Miles the replacement ECU is at 84K miles. Same car 900S 2.3L 1997 Auto.
Enginge changed at 107K 1996 longblock with about the same mileage. Passed IM inspection that year. Small oil leak that may have ended up on the catalyst and the sensor attached to the catalyst. (did not change that one yet).
MIL light was on and reset by s shop the codes were realted to the o2 sensor. MIL light came on again after about 500 to 600 miles and I reset it again and then it would not pass inspection eventhough i ahve bee driving the car several 100's of miles varied conditions. Inclusding highway speeds up to 80 Mph. Stop and go traffic included.
The MIL light is off now and the ODB sacnner tells me that the light is off as well. The light comes on when I turn the key and then it goes off when I start the engine.
Car runs great and it is more powerful and have a better pickup than before which to me indicates it is running richer but not to rich. I have occationally smeelled some gasoline smell in the car eitherjust after starting the engine or after shutting it down.
When I changed the ECU the car was running rough for about 10 to 15 miles and then it ran fine again.
The only pass codes I get on the PA report is: Fuel Cap integrity: PAss
Mil Bulb KOEO: PASS
MIL BULB KOER: PASS
The Following receive N/A
Air Inj System
EGR System
PCV System
Catalytic Converter
EVAP
Fuel Inlet Resistor
MIL Command Status
ODB Fault Code Result
ODB-IM Result
ODB REadinsess Result: FAIL
Overall Results : Not REady For Testing
Today we did not change the O2 sensor we can't the the check ening light to come on.
We disconnected the battery and put in the old ECU.
The following showed uo ready when we tested the car directly after switching back to the old ECU.
Misfire
Fuel Syst
Components
We connected a diagnostic tool and it could not read any codes it froze when it tried to read the codes.
Edited by Customer (name blocked for privacy) on May 1 2007 at 5:47pm
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Reply
Sent May 01, 2007 5:46 p.m. (7 hours and 30 minutes later)
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Today we did not change the O2 sensor we can't the the check ening light to come on.
We disconnected the battery and put in the old ECU.
The following showed uo ready when we tested the car directly after switching back to the old ECU.
Misfire
Fuel Syst
Components
We connected a diagnostic tool and it could not read any codes it froze when it tried to read the codes.
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Info Request
May 01, 2007 5:51 p.m. (4 minutes and 38 seconds later)
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Customer (name blocked for privacy), What Monitors show NOT READY on your scan tool?
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Reply
Sent May 01, 2007 5:54 p.m. (3 minutes and 3 seconds later)
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MIL showed ND
O2 Heatr Not ready
O2 Sensor Not Ready
Evap Not Ready
Showed not ready on the state testing system
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Info Request
May 01, 2007 5:59 p.m. (5 minutes and 40 seconds later)
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What scan tool are you using? Are the computer part numbers exactly alike? ~Rip
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Reply
Sent May 01, 2007 6:18 p.m. (18 minutes and 47 seconds later)
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Computer parts should be the same but I will double check. The result is the same from both computers on the Emmissions testing system.
I think it said Matco on my technicians tool.(It's a read box as large as two pocket books 4 or 5 line display)
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Reply
Sent May 01, 2007 6:19 p.m. (48 seconds later)
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We tried to erase the computer but the system locked up.
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Info Request
May 01, 2007 7:02 p.m. (42 minutes and 56 seconds later)
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The oxygen sensor monitor should pass as soon as the PCM knows the heater is operational. If any oxygen sensor has failed, the monitor will not clearl; but it will also set the check engine lamp. You stated the lamp is no longer comming on with the key on? Is this correct? ~Rip
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Reply
Sent May 01, 2007 7:13 p.m. (10 minutes and 46 seconds later)
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The check Engine lamp is coming on when I turn on the ignition. When I start the engine it hesitates but it turns off.
The confusing part is that several monitors that should have stated not ready after a poweroff of almost a week stated that they were ready for testing. But the o2 sensor the o2 heat the evap and the Cat reades incomplete.
That happened with both computers.
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Answer
May 01, 2007 7:19 p.m. (6 minutes and 15 seconds later)
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Reply
Sent May 01, 2007 9:35 p.m. (2 hours and 16 minutes later)
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What is an acceptable resistance and should the sensor be hot or cold?
I just wanted to let you know that I'm not a cheap guy. I like to get this solved. I know that your time is worth money and I have no problems paying you more than the posted money to solve the issue.
Holger
MainLineRE.com
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Answer
May 02, 2007 12:39 a.m. (3 hours and 3 minutes later)
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Reply
Sent May 02, 2007 9:31 a.m. (8 hours and 51 minutes later)
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The sensor in the front(new) reads 2.3 Ohms and the rear (old)reads 2.45 Ohms
Type of sensor is Bosch Generic 4 wire and I matched the colors on the cables.
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Answer
May 04, 2007 7:25 p.m. (2 days and 9 hours later)
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Answer
May 05, 2007 10:20 a.m. (14 hours and 55 minutes later)
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