Question about 1991 Oldsmobile 88

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As you drive it just stops and then will not start but 3 or4 hr latter it will

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Replace crank sensor. If it stops pour or spray water on it and see if it will crank then you know what to do. The sensor is at the crankshaft pulley towards the front of car.

Posted on Jul 02, 2009

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How do i complete the drive cycle in a 2004 Lincoln LS


A complete driving cycle should perform diagnostics on all systems. A complete driving cycle can be done in under fifteen minutes.
To perform an OBDII Driving cycle do the following:
  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
  2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
  3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
  7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

Jan 12, 2016 | 2004 Lincoln LS V8

1 Answer

Ever 3 or4 miles i get a clunky grinding sound in my rearend of my truck


Check for:

* Loose, damaged or worn universal joint on the driveshaft

* An issue with the differential such as worn gears and/or fluid loss

* Check both axle bearings for wear or damage (If you have a bad axle bearing, you will usually hear it when you turn)

* Worn or damaged rear suspension component like a sway bar or stabilizer rod (if equipped)

Oct 05, 2015 | Cars & Trucks

1 Answer

I hear a humming sound in my gearbox but it stop when the car is runnung free


what gear box, there are 3 or4.
3/4/5speed and transfer case.?
what tranny what box.
does it make noise parked.?
or only moving>
stated all modes of travel , with and with out noise.
neutral is one.
does running free mean coasting.
on mine i have 5 forward gears, reverse,neutral 2wd./4H and 4L.
lots of modes.

Feb 23, 2013 | 1996 Suzuki Vitara

1 Answer

Strong Vibration 1.8lt A-4 2004 multitronic


you have 1 or 2 bad ignition coils very common on this engine

Aug 18, 2009 | 2004 Audi A4

2 Answers

Car starts run's 3 seconds shuts down


Your car is equipped with a system called PASSKEY standard on all GM cars and light trucks, try the following procedure to reset the system, the battery being dead will trigger the system.

PASSKEY LOCKOUT RESET GM CARS 1999 UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the passlock system to recognize your key.

Mar 30, 2009 | 1999 Pontiac Sunfire

1 Answer

Hyundai accent 05, goes to 5000rmp at speed 20km/hr


You need to have to transmission filter changed. Dirty filter and not letting it shift. Can you start the motor and let it run about 10-minutes befroe driving. It could be that the fluid is cold and thick, not wanting to shift????? Try that.

Jan 15, 2009 | 2005 Hyundai Accent

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