Question about 1991 Ford Ranger Supercab

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Check engine light on a 1991 ford ranger

On my 1991 for ranger, the check engine light comes on after about 10 minutes of driving. When I shut the truck off and turn it back on, the light will come on about 5 minutes later. Could it be a thermostat problem because my temp. gauge reads low.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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PyroPCMan
  • 405 Answers

SOURCE: 1991 Ford Ranger manual transmission remove

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  1. Disconnect the negative battery cable.
  2. Remove the gearshift lever assembly from the control housing.
  3. Cover the opening in the control housing with a cloth to prevent dirt from falling into the unit.
  4. Raise the vehicle and support it safely.
  5. On 2WD vehicles, matchmark the driveshaft to the rear axle flange. Position a drain pan under the tailend of the transmission. Remove the driveshaft-to-rear axle flange fasteners and pull the driveshaft rearward to disconnect it from the transmission.
  6. Disconnect the clutch hydraulic line a the clutch housing. Plug the lines.
  7. Disconnect the speedometer from the transfer case/extension housing.
  8. Disconnect the starter motor, back-up lamp and, if equipped, neutral sensing switch harness connector.
  9. Place a wood block on a service jack and position the jack under the engine oil pan.
  10. On 4WD vehicles, remove the transfer case from the vehicle.
  11. Remove the starter motor.
  12. Position a transmission jack, under the transmission.
  13. Remove the transmission-to-engine retaining bolts and washers.
  14. Remove the nuts and bolts attaching the transmission mount and damper to the crossmember.
  15. Remove the nuts and bolts attaching the crossmember to the frame side rails and remove the crossmember.
  16. Lower the engine jack slightly to angle the transmission assembly. Work the clutch housing off the locating dowels and slide the clutch housing and the transmission rearward until the input shaft clears the clutch disc.
  17. Lower the transmission jack and remove the transmission from the vehicle.
To install:
  1. Check that the mating surfaces of the clutch housing, engine rear and dowel holes are free of burrs, dirt and paint.
  2. Place the transmission on the transmission jack. Position the transmission under the vehicle, then raise it into position. Align the input shaft splines with the clutch disc splines and work the transmission forward into the locating dowels.
  3. Install the transmission-to-engine retaining bolts and washers. Tighten the retaining bolts to specifications. Remove the transmission jack.
  4. Install the starter motor. Tighten the attaching nuts.
  5. Raise the engine and install the rear crossmember, insulator and damper and attaching nuts and bolts. Tighten and torque the bolts to specification.
  6. On 4WD vehicles, install the transfer case.
  7. On 2WD vehicles, insert the driveshaft into the transmission extension housing and install the center bearing attaching nuts, washers and lockwashers. Connect the driveshaft to the rear axle drive flange.
  8. Connect the starter motor, back-up lamp and, if equipped, neutral sensing switch connectors.
  9. Connect the hydraulic clutch line and bleed the system.
  10. Install the speedometer cable.
  11. Check and adjust the fluid level.
  12. Lower the vehicle.
  13. Install the gearshift lever assembly. Install the boot cover and bolts.
  14. Reconnect the negative battery cable.
  15. Check for proper shifting and operation of the transmission.
The above was pulled frrom:
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800391da

hope this helps

Posted on Jul 02, 2008

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SOURCE: 2004 ford ranger. temperature gauge

is the coolant flowing thru the radiator check bottom hose should be same temp as top hose if not could be clouged radiator or week water pump

Posted on Jul 27, 2008

keemo68
  • 1263 Answers

SOURCE: 96 Ford truck engine lIght will not go away.

this is the problem with code readers they bwill tell you the code and sometimes even have a reset feature. However they do not tell you the parameters and don't have an drivability feature so you can not test the ecm and all the sensors or modules while engine is running. diagnostic scan tools are very expensive and hard to use unless you have been trained to do so and PEP BOYs is not what I call real reliable mechanics to begin with. Now I concure with toddG on his reasoning in what might be the potential fault. if your vehicle is running rich or lean your O2 sensor will pick this up on the exaust side, however it is not the sole sensor responsible for the ecm adjusting the fuel air mixture.. you stated that you have switched out several o2 sensors and the fuel pressure regulator, but there is also you mass air flow sensor, your TPS sensor, as well as your map sensor these are worth checking out and just because a faulty sensor is the problem doesn't mean you will get a code each time. the system is built with redundancy in order to keep the vehicle running. in order to get the best possible diagnois take it to a shop where they have a full diagnostic scanner this will have not only OBD1 and OBD2 but cam protocol as well. while the tech is scanning the vehicle he will be able to see how the engine is performing under realtime conditions. please rate this as well as change the rating for toddg because he did offer a valid suggestion

Posted on Oct 02, 2008

  • 899 Answers

SOURCE: 1991 ford ranger not getting any spark

probably the coil , but have your alternator checked first

Posted on Oct 07, 2008

motor1258
  • 6674 Answers

SOURCE: Heater is blowing luke warm heat

Double checking, does fun shut off when switched to heat instead of defrost?

Posted on Jan 24, 2009

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