I'm new to this forum, and I drive ford trucks, but my friend just purchaised '91 Fireberd 3.1V6 with MT5 tranny.

About me.... I love truks! My job is DC trucks and Volvo trucks... I'm technical specialist, so I will not ask stuped quations.

ABout his car.... wight! looks well, but I don know how to pull codes.... Is it OBD-i? it is time to remember blink codes.
But MIL light does not appeares on run.

Abut the problem. Rought a bit idle, smoke from pass side exaust and bad MPG (about 10-12). But he installed new O2 sensor and new EGR. But spark plugs look like they must look (fuel-air mixture is ok), but where is smoke from?????

His car runs fast, about 120 MPG.... But when I tied to drive this car carefully I was surprised looking at fuel gauge.....

 

hi there welcome to TGO

i love trucks too i -started out with a 69 F-100 with the straight six 240ci and three on the tree and 9" 4.10 when i was 16 and it went from there - although my next truck and most other trucks since then were chevies i do appreciate most any old truck(especially from my favorite era that being the 67-72 years) in which ive owned a billion of since 94, they are all hard to find nowadays and so i have owned at least one of virtually everything now, probably around 150 or 200 vehicles now, i have all kinds of pics around, some in which i have forgotten where ive uploaded them to over the years, hmm

anyways what kind/color of smoke you guys seeing out the one side and when exactly?

this 3.1L powered car has true dual exhaust ??

hmmm

to pull the codes you jump two of the terminals in the ALDL connector with the ignition position in RUN(dashlights on)

it will blink once and then pause and then twice first(code 12)

and then if there are any problems or codes stored from previous problems then it iwl flash them

alsways a shorter time span pause inbetween flashes if its a two-digit code

long pause if its a single digit codeauto zone and such have a jumper tool and code book for dirt cheap

you could always jut post the codes here and i or someone else could tell you what it is for real quick

but it will be a general system code in most all cases and will take further testing and/or research to figure out the exact problem/cause/component failure

this car has the most basic form of code retrieval/OBD

the plugs should be a light tan and even pattern, and dry, and no bumps or deposits or anything else like that


good luck

 

Well. Like on my aero '89... But where is the connector? How to separate stored codes and current faults?

I dont know codes (I gonna try to look for them on Autozone.com).

The smoke is like a mix of blue and black.... Strange smoke and strange smell. But spark plugs look good, so mixture is ok. I used to work with EGR valves but on diesel engines. My aero has no EGR, Ranger '03 is to yang to be fixed.

As I've understood "Service engin soon" bliks the codes.

I have no tech info about this car. Where is the fuel pressure port and where is IAT???? The other quation, it seems to me there is no crankshaft position sensor, cam-sensor in distributor used as PIP? am I right?

 

it uses a vr sensor inside the distributor. The distributor is controlled by an igniton control module.
The fuel port is right under the manigold near teh distributor.
the IAT should be right in the intake.

The codes are listed, as well as the method for getting them:
Q: How can I display the error codes from a Service Engine Light?
A: If your car does not have the 12 pin DLC connector, you may not be able to manually "flash" your trouble codes. The language "may be possible" appears to suggest that this method should work with most, if not all, 12 pin DLC equipped cars.
THE CONNECTOR
----------------------- | 1 2 3 4 5 6 | | 7 8 9 10 11 12 | -----------------------
DISPLAYING THE TROUBLE CODES
Run a wire/hairpin from Pin 6 to Pin 12 with the ignition off (although on later cars it should be from Pin 5 to Pin 6), then turning the ignition to the on position without starting the engine will flash the "Service Engine Soon" light in the following sequence: flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause Following this "12" code repeating three times will come any trouble codes stored, flashing each of them three times. If you do not see the "12" flash three times, your diagnostic circuit is defective. Some vehicles will display stored trouble codes, then "12" again, followed by energizing "most system controlled relays." The fuel pump relay will not energize. The idle air control valve will fully extend to enable checking minimum idle speed.
CLEARING THE TROUBLE CODES
Turn the keyswitch to the off position. To clear any trouble codes, disconnect the power feed for 30 seconds. If this is done at the battery, and your car stereo is equipped and programmed with a four digit pin code, you may have to re-enter that as well to use your stereo again. A better place to remove power is at the fuse.
TROUBLE CODES

12.No reference pulses to Electronic Control Module (ECM).
13.Oxygen sensor signal stays lean during warm engine cruise
14.High temperature indicated at engine coolant temp sensor
15.Low temperature indicated at engine coolant temp sensor
16.High battery voltage OR Direct inition system open or shorted to ground
17.RPM signal problem
18-20.N/A
21.High voltage at throttle positon sensor
22.Low voltage at throttle positon sensor OR Fuel cutoff relay circuit open or shorted to ground
23.Low temperature at manifold air temperature sensor OR Throttle position sensor error
24.Circuit fault in vehicle speed sensor
25.High temperature at manifold air temperature sensor OR Vacuum switching valve circuit open or shorted to ground OR High voltage at ATS sensor
26.Fault in quad driver module
27.Fault in 2nd gear switch
28.Fault in 3rd gear switch
29.Fault in 4th gear switch
30.N/A
31.Low voltage at manifold absolute pressure sensor OR Fuel injector OR Park or neutral switch OR CAM diagnostic OR Governor malfunction OR Wastegate overboost OR Wastegate eletrical signal open or shorted to ground
32.Fault in barometric pressure sensor circuit OR Fault in exhaust gas recirculation valve diagnostic switch OR Fault in electronic vacuum regulator valve
33.High voltage (low vacuum) at mass air flow sensor (or MAP sensor)
34.Low voltage (high vacuum) at mass air flow sensor (or MAP sensor)
35.Idle speed can not be set to desired RPM
36.Burn off at mass air flow sensor OR Problem in transmission shift OR Fault in direct ignition system OR Missing pulses in electronic spark timing signal
37.N/A
38.Fault in torque converter clutch brake switch
39.Fault in torque converter clutch circuit
40.N/A
41.Fault at cam sensor OR Cylinder select error OR Tach input error
42.Fault at electronic spark timing circuit OR Fault at direct ignition system OR Fault at fuel cutoff relay circuit
43.Low voltage at electronic spark timing circuit
44.Oxygen sensor lean
45.Oxygen sensor rich
46.Fault at vehicle anti-theft sytem OR Fault at power steering switch
47.Problem at Electronic Control Module (ECM)
48.Misfire
49.Vacuum leak
50.N/A
51.PROM error
52.Problem at Electronic Control Module (ECM) - Missing fuel calpac missing OR Analog to digital converter error OR Fault at quad driver module OR Low voltage at oil temperature sensor
53.High voltage at battery OR High voltage at exhaust gas recirculation valve OR Voltage reference error OR Problem at vehicle anti-theft system
54.Low voltage at fuel pump OR Low voltage at Fuel pump relay OR Output failure at quad driver module
55.Problem at Electronic Control Module (ECM) - ECM failure OR Serial bus error OR Fuel lean malfunction
56.Low coolant or corrosivity OR Fault in port throttle system vacuum sensor
57.N/A
58.Problem at vehicle anti-theft system
59-60.N/A
61.Oxygen sensor degraded OR Port throttle system error OR Cruise control problems
62.Gear switch input diagnostics OR High voltage at oil temperature sensor OR Fault in cruise control- vacuum solenoid circuit
63.High voltage at manifold absolute pressure sensor OR Fault in exhaust gas recirculation valve OR Fault at right oxygen sensor
64.Low voltage at manifold absolute pressure sensor OR Fault in exhaust gas recirculation valve OR Right oxygen sensor lean
65.Failure at exhaust gas recirculation valve OR Faulure at injector peak/hold diagnostic OR Right oxygen sensor rich OR Fault at cruise control position sensor
66.Internal reset of Electronic Control Module (ECM)
67.Fault at cruise control switch
68.Fault at cruise control switch
69.Fault at air conditioner pressure switch
70-87.N/A
88.Internal reset of Electronic Control Module (ECM)
Diagram of aldl port, which is under the drivers side dash.
| 1 2 3 4 5 6 |
| 7 8 9 10 11 12 |

 

Codes pulled. 12 and that is all, so there were no codes, but spark plugs are black, so the mixture is reach.

If I see my Ford's plugs so black I use to replace O2 sensor, and I did it. New o2 sensor, but the same effect even if engine was warmed up well. GM ECU strategies differ Ford's. So the quation is, how to calibrate this engine for CO emmission?

 

Codes pulled. 12 and that is all, so there were no codes, but spark plugs are black, so the mixture is reach.

If I see my Ford's plugs so black I use to replace O2 sensor, and I did it. New o2 sensor, but the same effect even if engine was warmed up well. GM ECU strategies differ Ford's. So the quation is, how to calibrate this engine for CO emmission?