Buick LeSabre 1990 questions - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-09-2014, 07:29 PM   #51
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should be like 30-45.

obd1 cars are very difficult to trouble shoot, even more so over the internet. its hard to say whats going on not there listening to it myself. most of the time though heat related stalls are icm or crank sensor. it would be nice to verify fuel pressure is good too though sometimes low fuel pressure can make it act weird too
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Old 02-10-2014, 03:39 PM   #52
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Okay.

Today i started to change gauge lights etc.


How about, there have low fuel without bulb at all and security and antilock with bulb but no lights (maybe worn bulbs)

Is they on my car or does gauge have extra lights but no quipment to my car?


There was many empty bulb spots on information center right and left but there was only black spots when i flashed flashlight on so they arent on my model that i know.



Under the dash on co driver side was green box which was size of cicarette pack and seems like there is speaker inside. Theft alarm?

A/c "smell" sensors are normal different and smaller.
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Old 02-10-2014, 04:40 PM   #53
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could be some sort of chime module for the car, and people take out bulbs instead of fixing problems sometimes
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Old 02-13-2014, 10:03 AM   #54
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If your '90 LeSabre is similar to my '87 (body style is the same, and I assume the gauges are, although there were several available gauge clusters), the Low Fuel light should have a bulb - as the tank runs low, the light gradually lights up (sometimes very dim when it'* just on the edge of Empty, gets brighter as the level drops).

Security and Low Washer Fluid for me were empty - no bulb sockets at all. I don't have the security system, not sure if the Low Washer Fluid level was an option or was not available for '87 but was used on other years.

Make sure you change them all while you're in there... Since it'* such a pain the butt. I changed several burned out bulbs, and less than 3 days later one of the new bulbs burned out (behind the right hand side of the tach)... I was not in the mood to pull the entire dash apart to change it again!

As far as the green box with the speaker-like opening, I concur with Justin, it'* most likely the chime module. In my car, it'* mounted behind the wide strip of plastic on the dash that the vents are installed in. But it'* definitely possible in your car it is in a different place. GM often mounted these boxes under the dash in the area of the fuse panel or brake pedal. There are two different chime modules that I am familiar with on GMs, one actually uses a speaker, is the larger of the two, and is connected with the seat belt system and receives a signal from the Vehicle Speed Sensor in the transmission. The other uses a piezo device (which will look shiny, or shiny and rusty, if you look through the speaker holes).

HINT: If you ever want to/need to replace the piezo type, you can use ANY piezo chime module from ANY GM, it'* all the same part, maybe a different sound, from the 70s-90s as far as I know. I have used a chime module from a '91 *-10 Blazer in an '85 C-20 pickup and an '88 Olds Cutlass Ciera. And that same module would work in my '87 LeSabre, if I had pulled it before the Cutlass went to the scrapyard.
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Old 02-16-2014, 12:07 PM   #55
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Yea thanks


Its chime module, when panels were off i heard very very quiet ding ding here. So its bad somekind or just speaker.


Low fuel light worked when i but bulb on it but it didnt go off at all when car runs.

So it lights all the time even tank is not empty.



New icm and coil is coming. Icm is same number that original but coil was different number. There was no coil in that number what was in icm and i dont founded fast look nothing numbers to coil.
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Old 02-21-2014, 04:48 PM   #56
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New icm and coil. About 5 times shut down in warm and then drive. No stalling yet.


In warm engine it still misfires at idle. Platinum plugs fix that?
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Old 02-22-2014, 09:21 AM   #57
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if you just got standard plugs or old plugs, the platinums would be better but if its a bad miss its likely something else. the times i have tried standard plugs it felt like it had a very light miss.
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Old 02-22-2014, 04:44 PM   #58
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Well.. misfire is not that bad like carb and faulty timing etc
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Old 02-23-2014, 09:51 AM   #59
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i have had cheap plugs or cheap wires i thought would be fine make it run like that
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