up shift light on all the time even when idie

bgg12 · 07-29-2018, 01:59 PM

96 saturn sl any help would be kind

OldNuc · 07-29-2018, 02:51 PM

Has it always been on or is this a recent failure? A little history will help here.

bgg12 · 07-29-2018, 07:15 PM

dont know buyed it with blown motor and trans just got the motor back and the trans

bgg12 · 07-29-2018, 07:17 PM

buy it 4 months a go

OldNuc · 07-29-2018, 07:36 PM

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?

bgg12 · 07-29-2018, 07:43 PM

left side

OldNuc · 07-29-2018, 07:50 PM

OK that should be correct for 96.

Do you have a manual or auto trans?

bgg12 · 07-29-2018, 08:08 PM

manual

OldNuc · 07-29-2018, 09:02 PM

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 .

bgg12 · 07-29-2018, 09:26 PM

says MANUAL

bgg12 · 07-29-2018, 09:45 PM

service number 21023008

OldNuc · 07-29-2018, 10:42 PM

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.

OldNuc · 07-29-2018, 10:54 PM

That is the correct PCM for your car.

bgg12 · 07-29-2018, 11:02 PM

p1650

bgg12 · 07-29-2018, 11:08 PM

all new bulbs on it

OldNuc · 07-30-2018, 08:28 AM

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.

Highmile · 07-30-2018, 11:54 AM

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

OldNuc · 07-30-2018, 01:09 PM

There is no SES light as the tell-tail code, P1650, does not turn on any lights.

fdryer · 07-30-2018, 01:35 PM

bgg12, does check the engine light turn on and off when ignition is turned on?

OldNuc · 07-30-2018, 01:51 PM

The SES light does not turn off until the engine is running and the key has returned to the after crank position.

07-29-2018, 01:59 PM	#1
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	up shift light on all the time even when idie 96 saturn sl any help would be kind

07-29-2018, 02:51 PM	#2
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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.

07-29-2018, 07:15 PM	#3
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	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

07-29-2018, 07:17 PM	#4
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie buy it 4 months a go

07-29-2018, 07:36 PM	#5
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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.

07-29-2018, 07:43 PM	#6
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie left side

07-29-2018, 07:50 PM	#7
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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?

07-29-2018, 08:08 PM	#8
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie manual

07-29-2018, 09:02 PM	#9
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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 .

07-29-2018, 09:26 PM	#10
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie says MANUAL

07-29-2018, 09:45 PM	#11
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie service number 21023008

07-29-2018, 10:42 PM	#12
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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.

07-29-2018, 10:54 PM	#13
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	Re: up shift light on all the time even when idie That is the correct PCM for your car.

07-29-2018, 11:02 PM	#14
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie p1650

07-29-2018, 11:08 PM	#15
bgg12 Junior Member Join Date: Feb 2018 Posts: 18	Re: up shift light on all the time even when idie all new bulbs on it

07-30-2018, 08:28 AM	#16
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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.

07-30-2018, 11:54 AM	#17
Highmile Senior Member Join Date: Mar 2001 Location: St. Louis, Mo. Posts: 1,273 1995 SL1	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

07-30-2018, 01:09 PM	#18
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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.

07-30-2018, 01:35 PM	#19
fdryer Super Member Join Date: Jan 2006 Location: NYC Posts: 44,528 fdryer's Photos 2003 L-Series 3.0L Sedan	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?

07-30-2018, 01:51 PM	#20
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,693 OldNuc's Photos 1998 SC2	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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