Question about 1988 Oldsmobile Regency

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How to read engine light codes on a 1988 Oldsmobile Regency without using a OBD Scanner?

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An auto repair manual such as haynes or cylmer will show you how to jump the terminals and count the flashes and the code explanation

Posted on Oct 07, 2009

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3 Answers

What is a scan tool


A scan tool allows for the OBD II (On Board Diagnostics) codes to be read from the engine computer in a car. These are common electronic diagnostics tools used by automotive technicians. They are usually used when a check engine light comes on to determine the error codes associated with the check engine light.


They almost always connect via a standard plug on the divers side under the dash.


Most automotive parts supplier will check a car with complementary service to determine the codes stored in a customers automobile.

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How to resetcneck engine light


Depending on your model you will either need OBD 1 or obd2 scanner to clear engine code

Nov 20, 2015 | 1988 Oldsmobile Regency

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How do i read the check engine codes on a 95 cutlass supreme


If it is OBD-1 you can use a paper clip to jumper two terminals in the test plug under the dash, and then watch the check engine light flash. If it is OBD-2 you need a code reader or scanner.
Most auto parts stores will read OBD-2 systems for free in hopes of selling you some parts.

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Where is the starter on my 1988 oldsmobile 98 regency


it is located in front of engine down toward the bottom of engine

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The code readers lights up but it will not read the codes


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My 91 oldsmobile 98 runs rough in idle but when driving run smooth.


Rough idle is a very common problem on 4 cylinders, but I believe the 98 Regency has a 6 cylinder in it, right?

Sometimes the coil packs get iffy, and sometimes the EGR Valve gets a leak in it causing a rough idle.

When the accelerator pedal is depressed, it can change things so that the engine seems to run smoothly.

However, I would look for codes to see if anything intermittent is occurring in the engine that may need attention.

The OBD-I scanner can help to diagnose the problem, if anything is out of specifications on the engine in question.

The owner will have to find a technician that has such a scanner.

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I have a 96 mazda b4000 and the check engine light is on how can you clear the code without using a scanner?


In obd-II vehicles, you can clear the code by having 40 or more cycles of start and run conditions followed by turning off the ignition completely without having an engine anomoly or issue.

It's easier to use the clear codes button on the obd-II scanner.

Nowadays, you can buy an OBD-II scanner for less than $100 at Walmart. I just got one.

Good luck on this.

Jun 27, 2010 | 1996 Nissan Pickup

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