No Cruise Control After Changing TPS
05-05-2005, 01:22 PM
#11
Senior Member
Certified Car Nut
I think the TPS could be suspect as well. If it worked before you changed it, and now it doesnt, then that definetly puts a flag up. Do you have access to a multimeter?
05-05-2005, 01:28 PM
#12
DINOSAURUS BOOSTUS
Expert Gearhead
I'm sure 10 people are having this same thought....I just wrote it first.
What'* that spaghetti mess of wiring you got happening by the cruise control? Can you please tie them up and keep them from getting burned on the exhaust shield.
What'* that spaghetti mess of wiring you got happening by the cruise control? Can you please tie them up and keep them from getting burned on the exhaust shield.
05-05-2005, 01:28 PM
#13
Guest
Posts: n/a
Ok this is another one...
Bill, Bill and Bill... And Newbie...
I'm not sure about the 92-93 Bonnies...
But the 94-95 bonnies monitor almost everything the CC does... Its possible that the TPS( New ) may nees to be checked to make sure its not defective....
Would you by chance know of anyone near you that possibly has a scantool that will read a 94-95 with OBD1 using the OBD2 connector? If the tool will read 94-95 GM it should be able to read the 16 Pin 94-95 Bonnie... The failure can be anything from the Vacume line( broken or collapsed ), to the CC Module, to the stalk switch, to the brake switch...
Another question...
Does the car shift good and on time? Not early leaving you with a little clunk... And whilr crusing on the interstate if you were to floor it does you car go back to D or 2nd gear, If it does than the PCM has a kickdown signal, and the TPS is what gives the load signal to the PCM...
I have also in the past seen where a faulty PCM was also to blame for a non functioning Cruise Control...
So lets try and knock the problems out one by one...
Also if there is a Cruise malfunction code stored in the PCM it will not set off the SES light... Good Luck and let us know what you find..
Also was the replacement TPS a Wells unit?
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Bill, Bill and Bill... And Newbie...
I'm not sure about the 92-93 Bonnies...
But the 94-95 bonnies monitor almost everything the CC does... Its possible that the TPS( New ) may nees to be checked to make sure its not defective....
Would you by chance know of anyone near you that possibly has a scantool that will read a 94-95 with OBD1 using the OBD2 connector? If the tool will read 94-95 GM it should be able to read the 16 Pin 94-95 Bonnie... The failure can be anything from the Vacume line( broken or collapsed ), to the CC Module, to the stalk switch, to the brake switch...
Another question...
Does the car shift good and on time? Not early leaving you with a little clunk... And whilr crusing on the interstate if you were to floor it does you car go back to D or 2nd gear, If it does than the PCM has a kickdown signal, and the TPS is what gives the load signal to the PCM...
I have also in the past seen where a faulty PCM was also to blame for a non functioning Cruise Control...
So lets try and knock the problems out one by one...
Also if there is a Cruise malfunction code stored in the PCM it will not set off the SES light... Good Luck and let us know what you find..
Also was the replacement TPS a Wells unit?
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05-05-2005, 01:39 PM
#14
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Let me try to take these one at a time.
Yes I have a multimeter, so point me where to measure.
The spaghetti mess is for an aftermarket autostarter that I installed last year. The pink is going to the battery, the purple to a hood switch and the yellow is unneeded for the Bonnie. I had them tucked under , but they got out a few months back when I changed the heater core. I will tie them back again.
The New TPS seems to be working correctly in that it solved the problem that lead me to change it (no response to accelerator and car just shutting off). Also, the shifting seems to be much smoother and at proper points. I do have a good passing gear when I floor it now.
Dunno if it is Wells or not. I got it at Autozone.
Sorry, this was over my head.
Thanks
Yes I have a multimeter, so point me where to measure.
The spaghetti mess is for an aftermarket autostarter that I installed last year. The pink is going to the battery, the purple to a hood switch and the yellow is unneeded for the Bonnie. I had them tucked under , but they got out a few months back when I changed the heater core. I will tie them back again.
The New TPS seems to be working correctly in that it solved the problem that lead me to change it (no response to accelerator and car just shutting off). Also, the shifting seems to be much smoother and at proper points. I do have a good passing gear when I floor it now.
Dunno if it is Wells or not. I got it at Autozone.
Would you by chance know of anyone near you that possibly has a scantool that will read a 94-95 with OBD1 using the OBD2 connector? If the tool will read 94-95 GM it should be able to read the 16 Pin 94-95 Bonnie...
Thanks
05-05-2005, 02:31 PM
#15
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Expert Gearhead
Xaa what he meant about people by you having a scantool...
Where are you located, please put it in your profile. That way other members near you can offer tools, time etc to help out if inclined.
The scantool hooks up to the connector in your d/* kickpanel under the dash. It links to the car computer to tell you what is happening, what malfunctions have occurred. Many members have scantools, others have friends with scan tools...and yet some others go to Advance or Autozone for a free scan.
Where are you located, please put it in your profile. That way other members near you can offer tools, time etc to help out if inclined.
The scantool hooks up to the connector in your d/* kickpanel under the dash. It links to the car computer to tell you what is happening, what malfunctions have occurred. Many members have scantools, others have friends with scan tools...and yet some others go to Advance or Autozone for a free scan.
05-05-2005, 02:50 PM
#16
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Got it. I'm in Charlotte, NC (added to my profile now).
Initially with the TPS I went to Autozone for a scan. Their scan tool (I called it a handheld computer), would connect to my car but not initialize. The guy said because it was pre-96, dunno if that'* true or not. Then he gave me a number of a guy with a more expensive unit (it was a Snap on). he came out and checked the codes to determine I needed to change the TPS. The only code there was "Throttle Position Low" so I changed the TPS.
That guy charged me $40 for a scan. If I'm reading this correctly now, prhaps I need another scan to uncover what might be going on with the cruise?
Anyway, you guys rock, I won't be a newbie forever.
Initially with the TPS I went to Autozone for a scan. Their scan tool (I called it a handheld computer), would connect to my car but not initialize. The guy said because it was pre-96, dunno if that'* true or not. Then he gave me a number of a guy with a more expensive unit (it was a Snap on). he came out and checked the codes to determine I needed to change the TPS. The only code there was "Throttle Position Low" so I changed the TPS.
That guy charged me $40 for a scan. If I'm reading this correctly now, prhaps I need another scan to uncover what might be going on with the cruise?
Anyway, you guys rock, I won't be a newbie forever.
05-05-2005, 07:08 PM
#19
Senior Member
Certified Car Nut
Try this.
http://www.geocities.com/carnutguy/c...hancement.html
See what kind of voltage you get from the TPS.
http://www.geocities.com/carnutguy/c...hancement.html
See what kind of voltage you get from the TPS.
05-05-2005, 08:49 PM
#20
Junior Member
Posts like a Ricer Type-R
Hmmmm....check something first. Make sure you got the throttle shaft pin on the correct side of the TPS actuator arm. It'* possible to get it swapped. Just make sure the TPS actuator arm moves when you manually advance the throttle plate. The pin on the throttle plate shaft should ride on the FLAT side of the TPS actuator arm.