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Got a 1995 Ford Taurus, Check Engine light is on. Called independent mechanic, Ford Dealership and nobody has the proper tools to diagnose problem or is just not willing to work on a pre-2000 Taurus. Any recommendations for a mechanic in the South Orange County, CA area or any possible suggestions of what's causing the Check Engine light to come on? Any help would be appreciated.
 

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May pm members Jeff K and/or chartmaker. You can pull codes on a gen. 2 by jumpering with a paperclip. Search the forum, youtube, google, etc.
 

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The diagnostic connector is located under the dash panel by the driver side. To get the check engine codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector. Turn your ignition key on with engine off and the codes should start to blink.
DTC - 12 No distributor reference pulse (diagnostic test active)

DTC - 13 Oxygen sensor circuit open or no activity

DTC - 13 Left bank O2 sensor circuit open or no activity

DTC - 14 Engine coolant temp sensor error (high temp indicated)

DTC - 15 Engine coolant temp sensor error (low temp indicated)

DTC - 16 System voltage too low

DTC - 17 Camshaft position sensor error

DTC - 21 Throttle Position sensor error (signal high)

DTC - 22 Throttle position sensor error (signal low)

DTC - 23 Intake air temp sensor error (low temp indicated)

DTC - 24 Vehicle speed sensor error (open circuit or no activity)

DTC - 25 Intake air temp sensor error (high temp indicated)

DTC - 26 Quad Driver Module (QDM A) error

DTC - 28 Auto transmission range pressure switch error

DTC - 31 Wastegate solenoid circuit error

DTC - 31 Gear Position Switch (PRNDL) error

DTC - 32 EGR system failure

DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)

DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)

DTC - 35 IAC problem or idle error

DTC - 36 MAF sensor error

DTC - 36 24x Crankshaft position sensor circuit error

DTC - 36 4T60-E Shifting Error

DTC - 37 TCC brake switch circuit error

DTC - 38 TCC brake switch circuit error

DTC - 39 Clutch switch circuit error

DTC - 39 TCC error

DTC - 41 Ignition control error

DTC - 41 MEM-CAL error

DTC - 41 C³I Cam Sensor Signal error

DTC - 42 Ignition bypass circuit error

DTC - 43 Knock sensor error

DTC - 44 Oxygen sensor error (lean condition indicated)

DTC - 44 Left bank O2 sensor error (lean condition indicated)

DTC - 45 Oxygen sensor error (rich condition indicated)

DTC - 45 Left bank O2 sensor error (rich condition indicated)

DTC - 46 Pass-Key II (VATS) system error - circuit out of freq range

DTC - 47 UART (serial data) circuit error

DTC - 51 PROM error

DTC - 51 Incorrect MEM-CAL

DTC - 52 Fuel cal-pak incorrect or missing

DTC - 53 System voltage too high

DTC - 53 Digital EGR Valve solenoid 1 error

DTC - 54 Fuel pump circuit low voltage

DTC - 54 Digital EGR Valve solenoid 2 error

DTC - 55 ECM error

DTC - 55 Digital EGR Valve solenoid 3 error

DTC - 56 Quad Driver Module (QDM B) error

DTC - 57 Boost Control error

DTC - 58 Trans fluid temp sensor circuit error (low voltage)

DTC - 58 VATS system error

DTC - 59 Trans fluid temp sensor circuit error (high voltage)

DTC - 61 A/C system performance

DTC - 63 Right bank O2 sensor circuit error

DTC - 63 MAP sensor circuit signal voltage high (low vacuum indicated)

DTC - 64 Right bank O2 sensor lean exhaust indicated

DTC - 64 MAP sensor circuit signal voltage low (high vacuum indicated)

DTC - 65 Right bank O2 sensor rich exhaust indicated

DTC - 66 A/C pressure sensor circuit error (low pressure indicated)

DTC - 67 A/C pressure sensor circuit error

DTC - 68 A/C clutch relay circuit error (shorted to ground)

DTC - 69 A/C clutch relay circuit error (open circuit indicated)

DTC - 69 A/C high pressure switch error

DTC - 70 A/C pressure sensor circuit error (high pressure indicated)

DTC - 71 A/C evaporator temp sensor circuit error (low temp indicated)

DTC - 72 VSS signal circuit error

DTC - 73 A/C evaporator temp sensor circuit error (high temp indicated)

DTC - 75 Digital EGR solenoid #1 circuit error

DTC - 76 Digital EGR solenoid #2 circuit error

DTC - 77 Digital EGR solenoid #3 circuit error

DTC - 79 Transmission fluid overtemp

DTC - 80 Transmission component slipping

DTC - 82 3x Crankshaft position sensor circuit error

DTC - 85 PROM error

DTC - 86 A/D error

DTC - 87 EEPROM error (flash memory error)

DTC - 90 TCC error

DTC - 93 Transmission pressure control solenoid circuit error

DTC - 96 Transmission system voltage low

DTC - 98 Invalid PCM program

DTC - 99 Invalid PCM program
 

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95 Vulcan EEC IV test connector is located in the engine bay at the top of the firewall on the pass side. 95 also uses 3 digit codes. Procedure for getting the codes is the same for all EEC IV systems.

Lists of codes and procedures to get them are available all over the web.

Get the codes and report back and we can help you.
 
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Discussion Starter #5
Thank you so much to Sheila, chartmaker and Jeff K. Started watching youtube videos last night and will be checking out the problem this week.
 

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Discussion Starter #6
@sheila, @Jeff K, @chartmaker. Thanks to all of you. I ran the diagnostics on my 95 Taurus yesterday. I checked the codes on troublecodes.net, just wanted to your feedback as well. The codes for the Key On, Engine off test are:

176, 177, 332, 336, 543

The codes for the Engine Running test are:

136 and 332

The 543 code has to do with Fuel Pump Monitor circuit shows no power, but the car starts and runs so I know it's getting fuel ok. The other codes are related to Oxygen Sensor/s, EGR not opening/responding and PFE Sensor signal is/was high. I understand that if the Pressure Feedback sensor sends a false reading to the computer, it can cause the EGR system to malfunction. My initial question is:

Should I first look at fixing the PFE Sensor and see if that takes care of the EGR codes that are coming up?
 

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Check the hose from the PFE sensor (on the firewall at the pass side near the EEC TEST connector) to its connection to the bung on the bank 1 (firewall side) exhaust manifold to see if it is burned, melted, etc. This hose should be a high temp silicone hose. If someone replaced it with rubber hose at some time in the past, I guarantee the hose will be melted and/or burned. Also check the 3 pin electrical connector at the PFE for corrosion, damage etc, and check the PFE wire harness for damage, melted insulation, etc. The PFE sensors themselves are not a real common failure, but the do occasionally do fail.
 

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If it passes the smog check as is, and CEL light isn't a disqualifier, here's a thought: 25-year-old car loaded with enough electric, electronic and mechanical gizmos to give Rube Goldberg nightmares - it's gonna have 'issues' - tracking them all down and fixing them is gonna be an expensive PITA - if it's running okay and delivering something close to the rated mileage, maybe just drive it, keep the oil and fluids clean and don't sweat the small stuff.
The CEL light's been on on our 99 Taurus for many years, I could care less - car runs fine, doesn't do anything weird, to me that's all that matters.
 
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