Question about 1990 Oldsmobile Regency

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I have a 1986 olds 98 regency with charging problem the battery is new and alternator is new

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Posted on Jan 02, 2017

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SOURCE: 1988 Oldsmobile Regency 98 will idle but won't quits on the road

Mixture solenoid Quadrajet carburetor? I might start in that neighborhood if it has that carb. Quite cantankerous if not in freshly rebuilt and operating mode. Can cause more than mild symptoms. All your electrical connections and engine/body grounds in good shape? Trying to rule out ignition breakdown so you can focus on fuel delivery, which is my suspicion in this case. Let me know what you find. Thanks, TT

Posted on Jan 28, 2009

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SOURCE: 1991 oldsmobile 98 fuel filter replacement location?

my fuel filter is located right behind the pass side tire on the inner side of the frame.

Posted on Sep 22, 2009

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SOURCE: The battery in my 1994 olds 98 regency drains down

check for power drain in accessories such as under hood light/glove box light/trunk light sometimes these switches stick on and drain battery-but i would also recheck the battery again if one failed never know could be from same batch

Posted on Nov 11, 2009

ZJLimited
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SOURCE: firing order for 3.8, 1986 oldsmobile 98 regency?

1986 Oldsmobile 3.8 liter V-6

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Posted on Jun 02, 2010

dttech
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SOURCE: I have a 1990 Olds 98 with a charging problem. THe battery is good and the alt is new. It is not charging

You need to test your charging system circuits at the alternator. (see diagram and instructions)

BLK is the cable to the battery POSITIVE terminal - this is hot at all times.
PINK/BLACK comes from Fuse #5 (15 Amp) in the relay center under the right side of the instrument panel. This wire is hot (battery voltage) with the ignition switch in the RUN, BULB TEST, or START positions.
BROWN comes from your instrument panel and is protected by Fuse #16 (20 Amp) in the instrument panel left side fuse block. This wire will have slightly less than battery voltage with the ignition switch in the RUN, BULB TEST, or START positions.
If any of this is not as described, let me know what you have found and we can continue if needed.

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Posted on Oct 28, 2011

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1 Answer

Battery not charging..good alternator...internal regulated alternator


that year 1986 alternator voltage regulator either external or internal follow alternator battery feed wire if you see battery feed wire going to black box mounted on fire wall you have external voltage regulator.if voltage regulator okay problem could be alternator fuse or fuse link could be faulty battery cables if cables over 20 years old but make sure alternator drive belt tension correct.

Oct 27, 2013 | 1986 Chrysler LeBaron

1 Answer

Put in new alternator - battery still won't charge


Have you checked the alternator, I work at a auto parts store and see this all the time, check the inline fuel filter, also have your checked the coil, mine went out and that was the last thing I checked but am back on the road.

Jun 03, 2012 | 1986 Chevrolet Camaro

1 Answer

I have a 1990 Olds 98 with a charging problem. THe battery is good and the alt is new. It is not charging


You need to test your charging system circuits at the alternator. (see diagram and instructions)

BLK is the cable to the battery POSITIVE terminal - this is hot at all times.
PINK/BLACK comes from Fuse #5 (15 Amp) in the relay center under the right side of the instrument panel. This wire is hot (battery voltage) with the ignition switch in the RUN, BULB TEST, or START positions.
BROWN comes from your instrument panel and is protected by Fuse #16 (20 Amp) in the instrument panel left side fuse block. This wire will have slightly less than battery voltage with the ignition switch in the RUN, BULB TEST, or START positions.
If any of this is not as described, let me know what you have found and we can continue if needed.

10_28_2011_12_29_29_am.jpg

Oct 27, 2011 | 1990 Oldsmobile Regency

3 Answers

I have a 1990 oldsmobile 98 and every day i have to get a boost to start it. what's the problem


it is the automatic load leveler that pumps air into the back shocks to level the car so it rides better when there are lots of people or weight in it. it is in the frontof the car opposite the battery, just disconnect it. had the same problem on my 1990 olds 98.

Aug 21, 2010 | 1988 Oldsmobile Regency

1 Answer

Every now and again engine will rev up and coolent senser error code also high battery charging at 20v ghecked with tester not overchargeing on a olds 98 1991


OK I think you have two unrelated issues here. The first is the coolant sensor. Either the sensor is broken or, just as likely, there is a problem with the wires going to and from it, either broken or the insulation has broken causing a short. When the coolant sensor malfunctions it can send a signal to engine control unit (ECU) that the coolant, and therefore the engine, is cold. The ECU responds by injecting more fuel to compensate for a 'cold' engine and this causes the engine to race. Fix the coolant sensor/wiring and the engine racing will also be cured. The charging voltage from the alternator is too high in my experience. It should be only be about 14.5 volts even when the battery is low. Most alternators have an integrated brushes and electronic module that can be unbolted and exchanged for a new one. Failing that, an alternator can be bought at a reasonable price on exchange for your old one. Some damage to other electrical systems my result of high voltage supply, my car actually has an over voltage protection relay and fuse to protect the ABS braking system and other circuits. A friendly consultation with an auto electrician now might save money on other things in future

Jun 20, 2010 | 1991 Oldsmobile Ninety Eight Regency

1 Answer

The battery in my 1994 olds 98 regency drains down over night.The battery is new and the charging system has been checked and is ok. I bought a new battery in dec.but advanced auto parts test machine said...


check for power drain in accessories such as under hood light/glove box light/trunk light sometimes these switches stick on and drain battery-but i would also recheck the battery again if one failed never know could be from same batch

Nov 11, 2009 | Oldsmobile Ninety Cars & Trucks

1 Answer

Over charge of battery in a 1986 dodge ramcharger


had same problem it was fuseable links by battery old and brittle

Dec 03, 2008 | 1986 Dodge Ramcharger

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