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07-29-2018, 01:59 PM
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#1 | ||||
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Junior Member
 Join Date: Feb 2018
Posts: 18
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up shift light on all the time even when idie
96 saturn sl any help would be kind
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07-29-2018, 02:51 PM
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#2 | ||||
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Super Member
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Re: up shift light on all the time even when idie
Has it always been on or is this a recent failure? A little history will help here.
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07-29-2018, 07:15 PM
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#3 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
dont know buyed it with blown motor and trans just got the motor back and the trans
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07-29-2018, 07:17 PM
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#4 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
buy it 4 months a go
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07-29-2018, 07:36 PM
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#5 | ||||
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Super Member
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Re: up shift light on all the time even when idie
It is highly possible you have a later model cluster in there. The 96 is slightly different that the 97-99 which do swap with no issues.
Is your upshift light on the right side or left side of the cluster as you look at it when in the drivers seat? Once the vintage of the cluster is determined you will be able to go from there and find the problem. Manual or automatic transmission? Last edited by OldNuc; 07-29-2018 at 07:49 PM..
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07-29-2018, 07:43 PM
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#6 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
left side
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07-29-2018, 07:50 PM
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#7 | ||||
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Super Member
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Re: up shift light on all the time even when idie
OK that should be correct for 96.
Do you have a manual or auto trans?
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07-29-2018, 08:08 PM
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#8 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
manual
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07-29-2018, 09:02 PM
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#9 | ||||
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Super Member
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Re: up shift light on all the time even when idie
OK, Let me take a look at the wiring diagrams and see what the problem could be.
Do you know where the PCM is mounted? It is on the left side of the car under the dash up against the left side up high. If you can look up under there you can see it. There should be a paper tag on the side you can see and it will say MANUAL or AUTOMATIC. You can usually get a decent pix of this with a cell phone. This is something else to check .
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07-29-2018, 09:26 PM
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#10 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
says MANUAL
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07-29-2018, 09:45 PM
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#11 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
service number 21023008
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07-29-2018, 10:42 PM
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#12 | ||||
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Super Member
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Re: up shift light on all the time even when idie
Did that tag also have MANUAL printed on it?
The upshift lamp is driven directly from the PCM. Have you had all codes read yet and is either the service wrench or SES light on? Do they come on when the key is initially turned to ON but not crank? At this point there is a check for a grounded wire to the PCM or a defective PCM or Cluster.
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07-29-2018, 10:54 PM
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#13 | ||||
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Super Member
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Re: up shift light on all the time even when idie
That is the correct PCM for your car.
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07-29-2018, 11:02 PM
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#14 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
p1650
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07-29-2018, 11:08 PM
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#15 | ||||
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Junior Member
Join Date: Feb 2018
Posts: 18
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Re: up shift light on all the time even when idie
all new bulbs on it
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07-30-2018, 08:28 AM
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Super Member
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Re: up shift light on all the time even when idie
P1650 is directly related to that light being on.
Do you have a DVM that is capable of checking for grounds? As you have the code it is highly likely that the problem is in the wiring between the cluster and the PCM only and the PCM is fine and not at fault.
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07-30-2018, 11:54 AM
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#17 | ||||
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Senior Member
Join Date: Mar 2001
Location: St. Louis, Mo.
Posts: 1,193
1995 SL1
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Re: up shift light on all the time even when idie
OP didn't say if there was a check engine light on or not but might lend a clue if it is.
Could this be a map sensor issue? maybe unplugged. Highmile 95 SL1 663k and counting
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07-30-2018, 01:09 PM
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#18 | ||||
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Super Member
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Re: up shift light on all the time even when idie
There is no SES light as the tell-tail code, P1650, does not turn on any lights.
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07-30-2018, 01:35 PM
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Super Member
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Re: up shift light on all the time even when idie
bgg12, does check the engine light turn on and off when ignition is turned on?
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07-30-2018, 01:51 PM
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#20 | ||||
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Super Member
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Re: up shift light on all the time even when idie
The SES light does not turn off until the engine is running and the key has returned to the after crank position.
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