2007-2010 Porsche Cayenne Base Hesitation
09-11-2018, 09:08 PM
#1
2007-2010 Porsche Cayenne Base Hesitation
Hi Guys, I am a proud owner of a 2010 Porsche Cayenne Base model and I have been having a intermittent Engine hesitation issue. the following is a detailed issue of whats been happening, any suggestions that would help resolve this is appreciated.
About a month ago I was coming back from Roosevelt lake ,AZ which is about 3 hours from Tucson, it was a hot day 113deg, I was already in town and the gas gauge read about 1/8 of a tank and I was starting to move from a light when all of the sudden it felt like the engine stalled and came back on for a second then it did it again and my CEL came on.
I thought maybe my gauge was off and i was running out of fuel so i found the nearest gas station and filled up, I drove home and connected my car to my Icarsoft Computer and it was showing error P2293 Rail Pressure Control, I cleared the error and decided I would drive the car and see if it would happened again,
Two months and hundreds of miles of mixed city and highway driving went by without a hitch.
Last week I had to go to LA so I packed up the car (4 passengers and luggage) and headed out. About two hours in on I8 right before Yuma it was 114 degrees outside and I was cruising at about 85 MPH, the gas gauge read about 5/8 of a tank all oil and coolant temps were normal when all of the sudden the hesitation came back, it would run normal then hiccup then run normal, ect.. and the CEL came back on, this went on for about 20 minutes but I was still able to maintain 80-85 MPH.
After 20 minutes of this we decided to pull into a gas station and fill the tank with gas to see if anything would change and wouldn't you know that after filling up and setting off again over the mountain pass towards San Diego the car ran without a hitch we averaged 77 MPH all the way to LA, but we would stop to fill up whenever the gauge read 5/8. after a couple of hours the CEL turned off on its own.
On our way back to Tucson we decided to fill up in San Diego and not fill up until it started to act up, and to my surprise the car once more ran flawlessly. we didn't fill up until the gas low warning chime came on in Marana, AZ.
The highest temperature this day was 104 deg. We filled the tank and made it home without incident.
The next day I connected my car to my Icarsoft computer and it was showing the following error codes: P2293 Rail Pressure control, P0300 Random/multiple cylinder misfire detected, P0301 cylinder 1 misfire detected, P0303 cylinder 3 misfire detected.
Could this be ambient temperature related?
Vapor lock at high ambient temps?
If it was the fuel pumps you think it would have failed again on the way back, right?
This has to be happening to other people with 2007-2010 Cayenne Base models. Any input will help.Thanks in Advance.
Sincerely;
Paul
About a month ago I was coming back from Roosevelt lake ,AZ which is about 3 hours from Tucson, it was a hot day 113deg, I was already in town and the gas gauge read about 1/8 of a tank and I was starting to move from a light when all of the sudden it felt like the engine stalled and came back on for a second then it did it again and my CEL came on.
I thought maybe my gauge was off and i was running out of fuel so i found the nearest gas station and filled up, I drove home and connected my car to my Icarsoft Computer and it was showing error P2293 Rail Pressure Control, I cleared the error and decided I would drive the car and see if it would happened again,
Two months and hundreds of miles of mixed city and highway driving went by without a hitch.
Last week I had to go to LA so I packed up the car (4 passengers and luggage) and headed out. About two hours in on I8 right before Yuma it was 114 degrees outside and I was cruising at about 85 MPH, the gas gauge read about 5/8 of a tank all oil and coolant temps were normal when all of the sudden the hesitation came back, it would run normal then hiccup then run normal, ect.. and the CEL came back on, this went on for about 20 minutes but I was still able to maintain 80-85 MPH.
After 20 minutes of this we decided to pull into a gas station and fill the tank with gas to see if anything would change and wouldn't you know that after filling up and setting off again over the mountain pass towards San Diego the car ran without a hitch we averaged 77 MPH all the way to LA, but we would stop to fill up whenever the gauge read 5/8. after a couple of hours the CEL turned off on its own.
On our way back to Tucson we decided to fill up in San Diego and not fill up until it started to act up, and to my surprise the car once more ran flawlessly. we didn't fill up until the gas low warning chime came on in Marana, AZ.
The highest temperature this day was 104 deg. We filled the tank and made it home without incident.
The next day I connected my car to my Icarsoft computer and it was showing the following error codes: P2293 Rail Pressure control, P0300 Random/multiple cylinder misfire detected, P0301 cylinder 1 misfire detected, P0303 cylinder 3 misfire detected.
Could this be ambient temperature related?
Vapor lock at high ambient temps?
If it was the fuel pumps you think it would have failed again on the way back, right?
This has to be happening to other people with 2007-2010 Cayenne Base models. Any input will help.Thanks in Advance.
Sincerely;
Paul
Last edited by pxwguad1; 09-12-2018 at 12:34 PM.
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MathIsFun (07-13-2020)
09-11-2018, 10:54 PM
#2
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Hi Paul,
Welcome to the forum. I saw this was a moderated post - so I approved it.
One suggestion - edit it - and add some paragraph breaks. The text is just too dense for my old eyes to keep track of. A few paragraph breaks would be quite helpful.
Best,
Welcome to the forum. I saw this was a moderated post - so I approved it.
One suggestion - edit it - and add some paragraph breaks. The text is just too dense for my old eyes to keep track of. A few paragraph breaks would be quite helpful.
Best,
09-12-2018, 05:31 AM
#3
Fixed the issue when you fill up? The only thing you change is removing and replacing the fuel cap - i’d start with a new one and go from there. They are notorious for causing problems.
09-12-2018, 09:03 AM
#4
RL Community Team
Rennlist Member
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I don't recall if your year and model has the dual pumps because the tank is split over the center tunnel, but getting below that 5/8 level and the one pump starting to fail is a common symptom, whereas staying above that level uses the other pump which is why you never have a problem when the tank is 3/4 or higher .
Now with the DFI motors, there are the low pressure fuel pump(s) and then the high pressure fuel pump that injects the fuel into the combustion chamber. It's also possible that at high temperatures, the JP fuel pump is having an issue. I believe there were issues with the HPFP early on and either a recall or a TSB on them. Has yours ever been replaced?
Now with the DFI motors, there are the low pressure fuel pump(s) and then the high pressure fuel pump that injects the fuel into the combustion chamber. It's also possible that at high temperatures, the JP fuel pump is having an issue. I believe there were issues with the HPFP early on and either a recall or a TSB on them. Has yours ever been replaced?
09-12-2018, 12:38 PM
#5
I don't recall if your year and model has the dual pumps because the tank is split over the center tunnel, but getting below that 5/8 level and the one pump starting to fail is a common symptom, whereas staying above that level uses the other pump which is why you never have a problem when the tank is 3/4 or higher .
Now with the DFI motors, there are the low pressure fuel pump(s) and then the high pressure fuel pump that injects the fuel into the combustion chamber. It's also possible that at high temperatures, the JP fuel pump is having an issue. I believe there were issues with the HPFP early on and either a recall or a TSB on them. Has yours ever been replaced?
Now with the DFI motors, there are the low pressure fuel pump(s) and then the high pressure fuel pump that injects the fuel into the combustion chamber. It's also possible that at high temperatures, the JP fuel pump is having an issue. I believe there were issues with the HPFP early on and either a recall or a TSB on them. Has yours ever been replaced?
Thanks!
09-12-2018, 12:39 PM
#6
09-12-2018, 01:13 PM
#7
RL Community Team
Rennlist Member
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Trending Topics
09-13-2018, 11:00 AM
#8
Petza914,
The funny thing is that I have been driving the car for a couple of months in mixed driving and the tank has been below the half mark for most of the time.
What gives?
Paul
The funny thing is that I have been driving the car for a couple of months in mixed driving and the tank has been below the half mark for most of the time.
What gives?
Paul
09-13-2018, 11:08 AM
#9
RL Community Team
Rennlist Member
Rennlist Member
In my Cayenne, I installed a p3 Vent gauge that plugs into the OBD2 port and installs in the bottom of the drivers side left vent. It lets me cycle through and look at coolant temp, AFR, boost/vacuum, voltage, throttle pedal sensor position, and a bunch of other stuff. Also has modes to calculate a 0-60 and 0-100 speed runs (need to try those now that I think about it
In their next software release, they're also supposed to add oil pressure and temperature.screen is black in the photo and under the vent vanes close to the ignition, built into the vent. http://www.p3cars.com/porsche/
