Aston Martin DB7, DB9, DBS, Vantage V8, Vanquish, and Classic models

DB9 check engine light - engine system service - throttle actuator?

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Old Feb 17, 2023 | 01:51 AM
  #31  
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Actually, I was wrong about the mirrored parts. the casing is mirrored, but the internal parts are not.

I found that the throttle pots are a really poor design with just tiny hair like wires joining the internal circuit board to the connector pins. Only one end of the wires appears to be attached, with it seemingly relying on a spring action to contact the other side. Either that, or all of one end had come unstuck (didn't appear to be soldered). I replaced my throttle pedal assembly from a later model which worked immediately. I didn't dare take it apart to see if it's such a poor design.
 
Old Mar 21, 2025 | 04:16 PM
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Originally Posted by littlescrote
Actually, I was wrong about the mirrored parts. the casing is mirrored, but the internal parts are not.

I found that the throttle pots are a really poor design with just tiny hair like wires joining the internal circuit board to the connector pins. Only one end of the wires appears to be attached, with it seemingly relying on a spring action to contact the other side. Either that, or all of one end had come unstuck (didn't appear to be soldered). I replaced my throttle pedal assembly from a later model which worked immediately. I didn't dare take it apart to see if it's such a poor design.

how were you able to get to the 2 top bolts on the pedal assembly? I’m going through this now. 2006 db9. Been sitting all winter. Go to start it after priming the oil and get these dreaded codes. And car is not running right. Ordered a used assembly from a late model rapide. But having a hell of a time reaching the top bolts
 
Old Mar 21, 2025 | 09:13 PM
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What year of Rapide did you source? Later Rapide is a different pedal due to Bosch electronics for engine management.
 
Old Mar 22, 2025 | 07:53 AM
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Originally Posted by j doubleu
what year of rapide did you source? Later rapide is a different pedal due to bosch electronics for engine management.

2014
 
Old Mar 22, 2025 | 08:13 AM
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Co






Codes I’m getting in a simple scanner
 
Old Mar 24, 2025 | 02:54 AM
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Originally Posted by trainwreck
how were you able to get to the 2 top bolts on the pedal assembly? I’m going through this now. 2006 db9. Been sitting all winter. Go to start it after priming the oil and get these dreaded codes. And car is not running right. Ordered a used assembly from a late model rapide. But having a hell of a time reaching the top bolts
I don't recall it being in any way difficult, apart from needing to perhaps lie upside down in the footwell.
 
Old Mar 29, 2025 | 03:09 PM
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So just an update. Like to come back and post progress for anyone else having this issue. Yeah laying on your back pretty much upside down is the way to get at those bolts. They’re 8mm. The 2 connectors come off easy after it’s loose. But this fixed my issue. No more check engine light and the car is firing on all 12! I used a pedal from a 2014 rapide. Accelerator Gas Pedal Assembly 8d33-9n734-ac Oem Aston Martin Rapide 2014 Was the eBay listing. Part numbers are different. The base is slightly thicker on the rapide assembly. But it still fit. There are some differences in the assembly like the location of the spring. I should’ve took pictures prior to installing.
 
Old Aug 14, 2025 | 12:14 AM
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Originally Posted by trainwreck
So just an update. Like to come back and post progress for anyone else having this issue. Yeah laying on your back pretty much upside down is the way to get at those bolts. They’re 8mm. The 2 connectors come off easy after it’s loose. But this fixed my issue. No more check engine light and the car is firing on all 12! I used a pedal from a 2014 rapide. Accelerator Gas Pedal Assembly 8d33-9n734-ac Oem Aston Martin Rapide 2014 Was the eBay listing. Part numbers are different. The base is slightly thicker on the rapide assembly. But it still fit. There are some differences in the assembly like the location of the spring. I should’ve took pictures prior to installing.
Pretty crazy.. I hopped on here tonight feeling like there'd be no chance that I'd find someone dealing with a problem similar to mine, but here it is!
Trainwreck (great handle BTW I went to my 09 DBS (6speed) tonight and did the old oil circulation move that I've done a thousand times in the past, only to end up exactly where you did. Tried to get the pedal down after reading up on the issue and just couldn't get in there at the top bolts. Was afraid to just get a socket on it, with a couple woblers, that If I were lucky to spin them out, I couldn't imagine how I'd get them back in.

Was considering removing the driver seat as I HATE crawling over my leather, so I guess that's going to be the approach. My scan tool isn't the best but tons of codes, sounding very similar to whats been posted here.
A nearly new, second hand pedal is all it took to correct this? I could only get 1 of the plugs to pop loose, so getting the pedal unbolted is the only option to get better access.
Can't the 2 sensors just be replaced? That has to be cheaper?.. Right?
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Old Aug 14, 2025 | 04:58 PM
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There was a safety recall for throttle pedals for a range of DB’s several years ago. If your car was in range and not done, the dealers are still required to replace the pedal assembly AFAIK. My DBS (240) was in the recall range, FYI.
 
Old Aug 14, 2025 | 10:37 PM
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Originally Posted by XJRS Owner
There was a safety recall for throttle pedals for a range of DB’s several years ago. If your car was in range and not done, the dealers are still required to replace the pedal assembly AFAIK. My DBS (240) was in the recall range, FYI.
Oh wow.. That would be fantastic. Thank you for letting me know! I have done some more research and it looks like all DBS from 08-12' were effected.
The car won't start, and the nearest dealer is about 75 miles from my location. So need to figure that out I guess. Thank you again for responding!
 

Last edited by speedracer800; Aug 15, 2025 at 08:00 AM.
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