Runs/Drives, But no power, 5 mph max

[dave_r]

I unplugged the mass airflow sensor, it ran normally. I think I put the wrong one in 6 months ago.

I need to get a 996.606.124.00, right now it has 986.606.125.01

I might also be this

https://www.ebay.com/itm/Porsche-986-Boxster-996-911-00-04-Accelerator-Gas-Pedal-Cruise-Control-Man/152622830858?hash=item238907950a:g:EAkAAMXQVT9S7dn W

below is a quote:


If you are replacing your sensor, it is extremely important that you get the proper one for your car. There are two basic types, one for the cars that use a traditional throttle cable (up to 1999), and one for cars with an E-gas electronic throttle (2000 and later). In addition, the later-style E-gas sensor has been updated at least twice as of this moment. Porsche updated the sensors in the Boxster in mid-2000 and also released a new version of the DME software that is a required update if you are going to use this new and improved sensor (see Porsche Tech Bulletin Boxster 1a/00 2445). Here is a chart that shows the differences between all of the sensors:

If you own a 2000 Boxster or 2000 Boxster S, then you need to make sure that you have the proper sensor installed. Much confusion lies in the fact that most people don't know if their car has been updated by Porsche or not. If the old sensor that you removed is 996.606.124.00, then you need to replace it with the same part number (or have Porsche update your DME software to accommodate the newer style sensor: see Technical Service Bulletin 1/00 2445 Air Flow Sensor -- dated 4-18-00). If the old sensor you're removing ends in 125.00 or 125.01, then replace it with 986.606.125.01 (the latest version available).

[piper6909]

Originally Posted by dave_r

I unplugged the mass airflow sensor, it ran normally. I think I put the wrong one in 6 months ago.

I need to get a 996.606.124.00, right now it has 986.606.125.01

I might also be this

https://www.ebay.com/itm/Porsche-986-Boxster-996-911-00-04-Accelerator-Gas-Pedal-Cruise-Control-Man/152622830858?hash=item238907950a:g:EAkAAMXQVT9S7dn W

below is a quote:


If you are replacing your sensor, it is extremely important that you get the proper one for your car. There are two basic types, one for the cars that use a traditional throttle cable (up to 1999), and one for cars with an E-gas electronic throttle (2000 and later). In addition, the later-style E-gas sensor has been updated at least twice as of this moment. Porsche updated the sensors in the Boxster in mid-2000 and also released a new version of the DME software that is a required update if you are going to use this new and improved sensor (see Porsche Tech Bulletin Boxster 1a/00 2445). Here is a chart that shows the differences between all of the sensors:

If you own a 2000 Boxster or 2000 Boxster S, then you need to make sure that you have the proper sensor installed. Much confusion lies in the fact that most people don't know if their car has been updated by Porsche or not. If the old sensor that you removed is 996.606.124.00, then you need to replace it with the same part number (or have Porsche update your DME software to accommodate the newer style sensor: see Technical Service Bulletin 1/00 2445 Air Flow Sensor -- dated 4-18-00). If the old sensor you're removing ends in 125.00 or 125.01, then replace it with 986.606.125.01 (the latest version available).

Thanks for posting the solution.

Just out of curiosity, did it run poorly immediately after you installed the wrong MAF 6 months ago, or did it creep up later?

[dave_r]

Originally Posted by piper6909

Thanks for posting the solution.

Just out of curiosity, did it run poorly immediately after you installed the wrong MAF 6 months ago, or did it creep up later?

It ran much better actually. I think it was the consistent battery disconnecting that triggered something. I still don't have the new one, it's taking forever, shipping issue.

I still won't know until I try the new one. If that doesn't do it, it's going to a Porsche specialist.

By the way, I re-cleaned my alarm module under the seat with 97% first aid alcohol, soaked it for 20 minutes this time and scrubbed it with a toothbrush, battery drain issue went away. I took the board out of the case when I did all that, should have taken a picture.

[dave_r]

I think the IMS bearing went, the engine is done, what do you all think? I told a Porsche Specialist the symptoms, he said drain the oil, check it.

[maytag]

Originally Posted by dave_r

I think the IMS bearing went, the engine is done, what do you all think? I told a Porsche Specialist the symptoms, he said drain the oil, check it.

I've neither read nor seen anything in your thread that would make me think the IMS has failed.

How and why did you come to such a conclusion?

Sent from my SM-G970U using Tapatalk

[blue62]

Dave_R
On 5-10-2019 you stated that you unplugged the MAF and the car ran fine.
What I see from your posts is that you have.
1. a problem with the module under the seat. Which you believe is connected to your battery drain problem.
Which you may or may not have fixed.!!!!!!
You need to do some proper testing of the electrical system to prove fixed or not fixed.

2. As to your car possibly being in limp mode. (or what ever the problem may be) you need to do a proper step by step diagnosis. Which starts with the simplest things first. Like what codes if any are you getting.
The more things you replace (like the throttle body). or "fix" without knowing with reasonable certainty that they are the problem. The greater chance you have of compounding the problem or creating issues that didn't exist in the first place.

If you do not know how to do a proper diagnosis of the problem I would say hire someone or a shop that does.

you could spend a ton of money replacing parts and chasing ideas that you think are the problem. Potentially way more the a reputable shop would cost you.

If when you unplugged the MAF the car ran fine. (as you stated on 5-10-2019)
I doubt very much that you have an engine that is toast. It could be a very simple issue.

[dave_r]

Originally Posted by maytag

I've neither read nor seen anything in your thread that would make me think the IMS has failed.

How and why did you come to such a conclusion?

All of the metal in the oil filter, the oil had tons of metal in it. I guess the cam timing is off when it the IMS goes, causing limp mode. Makes sense to me, I think it's dead. The odd thing is the normal revving when I unplugged the mass airflow sensor.

It did make a funky noise once while in limp mode.

All of the metal in the oil is why I think it's the IMS. It was worse in person. There were some serious chunks.