Question about 1991 Ford F250

1 Answer

Check engine light. 91 ford F250 5.8

How do I get the trouble codes without a scanner?
I heard there is a way to" jump a circuit" to make the check engine light
flash the codes. How do I do that?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 20 Answers

Yes you can use a piece of wire on the Diagnostic Link Connector and the Self Test Input connector.
The DLC may or maynot be labeled, but it is the top right position you connect to the STI to get the codes. Can be read with the Check Engine Light. I would suggest getting a service manual from a parts store to help with this diagnostic, it has the codes list.

Posted on Feb 24, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Which connector do I jump on STI & STO to find trouble codes?


How to Pull Codes from an EEC-IV - Ford Truck Enthusiasts Forums

www.ford-trucks.com > ... > 1987 - 1996 F150 & Larger F-Series Trucks
Apr 16, 2003 - On the 41st or 81st Engine Temperature cycle, the DTC will be ... 7.3L Diesel only: Jumper STI to SIG RTN at the DLC and STI connectors. ... (See Code Output Format in this section.) ... The DTCs are transmitted on the Self-Test Output (STO) circuit found in the Data Link Connector (DLC). ..... Forum Jump. No STO signal, from EEC'IV
Jul 20, 2012
Hey guys...am I right??? PCM (power control module)
Feb 19, 2011
VIP Test Connector
Nov 8, 2004
More results from www.ford-trucks.com

Pre-1996 Ford truck trouble codes can be accessed without an ...

www.democraticunderground.com/?...

Democratic U

Dec 21, 2015 | Cars & Trucks

1 Answer

Check engine light


For $60.00-- go to Auto Zone & buy a code reader

You will be using it twice a year, for the rest of your life

Then use Google to look up the codes

Type: OBD & the code

Sep 12, 2013 | 1998 Ford Explorer

1 Answer

2009 chevy impala check engine light, engine power reduced and sometimes if I continue down the road after that message, the car shuts down and says staring disabled. Ive read throttle position sensor and...


Only way to be sure what is wrong is to have the computer scanned with a code reader or scanner to retrieve the trouble codes. They will direct you or a technician to the proper sensor, control, or circuit that is malfunctioning. Many national parts stores provide code reading for free.

Oct 25, 2012 | Chevrolet Impala Cars & Trucks

1 Answer

How do you read the trouble codes on a 91 honda


Under the passenger side kick pannel, there is a pair of wires with a blue connector at the end. You might be able to find it without remove the panel, but you will most likely have to take it off (just pull it straight out). Once you find it, take a paper clip or some other piece of wire and short the connection (put one end into each hole of the connector). Put the key in the ignition and turn two clicks. The check engine light will begin to blink out the code; long blink=10, short blink=1. Just add up the numbers to get your code. Examples
2 long, 2 short = 10+10+1+1 = Error code 22
4 long, 1 short = 10+10+10+10+1 = Error code 41

If your car is running fine and your check engine light is on, you will most likely get code 41, which is the heater circuit in your O2 sensor. You will have to replace the sensor to fix it, but your car will still run okay without doing so. You can usually do this yourself with a simple socket set and renting an O2 sensor socket from your local auto parts store.

May 12, 2010 | 1991 Honda Accord

1 Answer

WHY IS THE SERVICE ENGINE LIGHT ON IN MY SATURN??


The Check Engine light will light when the ECU stores a trouble code.
Counting the Flashes
To retrieve trouble codes, turn the ignition key to the "on" position with the engine OFF.
The Check engine light will flash many short blinks. The total number of blinks equals the code number. For example, flash,pause, flash,flash = code 12.If more than one code is stored, the Check engine light will flash the codes in sequence (lowest to highest) with a pause between each code. The codes will repeat until the key is turned to the OFF position.

11 Transaxle codes present 12 Diagnostic check only 13 Oxygen sensor circuit 14 Coolant sensor/high temperature 15 Coolant sensor/low temperature 17 PCM fault - pull-up resistor 19 6X signal fault (92-95 models) 21 Throttle position sensor-voltage high 22 Throttle position sensor-voltage low 23 IAT circuit low 24 VSS circuit-no signal 25 IAT circuit-Temp out of high range 26 Quad driver output fault 32 EGR system fault 33 MAP sensor - voltage out of range high 34 MAP sensor - voltage out of range low 35 IAC - rpm out of range 41 Ignition control circuit-open or shorted 42 Bypass circuit - shorted or open 41/42 IC control circuit grounded/bypass open 43 Knock sensor circuit shorted or open 44 O2 sensor indicates lean condition 45 O2 sensor indicates rich condition 46 Power steeringpressure circit(91 models)open or shorted 49 High idle indicates vacuum leak 51 PCM memory error 53 System voltage error 55 A/D error 58 trans fluid temperature too high 59 Trans fluid temperature too low 66/67 A/C pressure sensor 81 ABS message fault 82 PCM internal communication fault

Mar 10, 2010 | 1992 Saturn SL2

2 Answers

How do i retreive the trouble code associated with the check engine light . I understand this may be obtained without the use of a service scaning device. Ihave a1997 ford explorer. the check engine light...


Your vehicle is OBD2 compliant and you will need a scanner to access the code. Some auto parts stores will access the code for you free of charge.

Oct 18, 2009 | 1997 Ford Explorer AWD

1 Answer

Will start but rpm gauge jumps up and down then it dies


The problem you describe has NUMEROUS causes. Most common of these is a COIL is going bad. The RPM gauge gets its signal from the ignition coil/crank sensor circuit (could be either one OR could be the wiring between the engine control module (ECM) and the engine components. Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there.

Apr 21, 2009 | 2001 Kia Optima

1 Answer

Check engine light.


unless you know the nuts and bolts of your truck, you are better off taking it to a garage, go through the yellow pages and get prices, I charge $20 to get the codes and turn off the light, others may charge more depending on the equipment they have.
I don't suggest jumping at the data link, if you are wrong your ecu is now toast, and that will cost you a lot more than a scanner hook up
What year is your truck, the pre-OBDII ford do not have the capability of storing a lot of the codes nor will they show live data that well.
What are the symptoms you are having?

Feb 21, 2009 | 1991 Ford F250

1 Answer

High Idle


get a code reader like the Actron CP9015 Code Scanner, for 20 dollars and follow the directions. count the flashes and post the code if you need further help

Nov 17, 2008 | 1991 Ford F150

2 Answers

91 Lincoln Town Car A/C


CANT HELP W/ AC BUT THE TROUBLE CODES CAN BE READ THROUGH THE CHECK ENGINE LIGHT IF YOU JUMP THE DIAGNOSTIC TERMINAL W/ THE GROUND. YOUR CHECK ENGINE LIGHT SHOULD FLASH IN SETS(3 FLASHES THEN 2 FLASHES) WHICH IS YOUR CODE. THE FIRST CODE IS USUALLY A DIAGNOSTIC STARTED CODE FOLLOWED BY THE ACTUAL PROBLEM CODE. KEEP IN MIND THE SENSOR THAT IS TRIPPING IS NOT ALWAYS THE PROBLEM. MANY TIMES THE SENSOR IS JUST DOING ITS JOB OF TELLING YOU THERE IS A PROBLEM RELATED TO THE OPERATION OF THAT SENSOR.(IAC VALVE JUST LETS YOU KNOW THERE IS NOT ENOUGH AIR)

Sep 02, 2008 | 1991 Lincoln Town Car

Not finding what you are looking for?
1991 Ford F250 Logo

796 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

70387 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Ron Lankford

Level 3 Expert

5386 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...