Sluggish Acceleration when Cold

[CJ_Boxster]

Originally Posted by Lil bastard

I think it's time to replace the MAF. Aside from the Hot Film type Mass Air Flow Sensor, this part has the Intake Air Temperature sensor integrated into it.

You cannot fix this Intake Air Temperature sensor by cleaning the MAF. If it is wrong, all you can do is replace it.

You can test the Intake Air Temp sensor, which is really just a 'thermister' - it changes it's resistance to a constant electrical current based on temperature.

Remove the MAF and connect an Ohmmeter to pins 1 & 3. You should be seeing 2.3-2.7 kΩ @ 20°C (68°F). Any other value and the MAF must be replaced.

BTW, a high Intake Air Temp would cause the DME to lean out the fuel supply, not enrich it because Hot air is less dense than cool air. Seeing less air mass, the DME would reduce (not increase) the amount of fuel supplied.

Well that makes sense. Im just glad the torq is back cause Chevron across the street is at 3.99 for super and with the MAF plugged in, the boxster was just ********************t*ng gas like a greengo after eating his first enchilada. Thanks for the data for the Ohm meter, I've wanted to check it but didnt know what values i should be looking for. Ill have to get some batteries for the Ohm meter before i can do that.

[Brucelee]

Originally Posted by CJ_Boxster

Well that makes sense. Im just glad the torq is back cause Chevron across the street is at 3.99 for super and with the MAF plugged in, the boxster was just ********************t*ng gas like a greengo after eating his first enchilada. Thanks for the data for the Ohm meter, I've wanted to check it but didnt know what values i should be looking for. Ill have to get some batteries for the Ohm meter before i can do that.

I always throw a bottle of techron on my car for issues like this. Seems to do the trick.

How are the plugs, old?

[CJ_Boxster]

well the plugs were replaced by me about 1 year in a half ago & 33k miles ago.

Whats the service interval for replacing sparkplugs?

[Brucelee]

Originally Posted by CJ_Boxster

well the plugs were replaced by me about 1 year in a half ago & 33k miles ago.

Whats the service interval for replacing sparkplugs?

Check your manual. It used to be 30K but I don't know about your specific vehicle.

[CJ_Boxster]

Yeah, Ill have to check. but i probably dont need to check cause im sure they are ready for a changin... I do have this tool that hooks up to a air compressor and is filled with a fine sand, I stick the sparkplug into this hole and pull the trigger and it sandblasts the sparkplug back to new looking condition.... I might use that since it's worked on my other TT cars it the past.

[Dr. Kill]

Originally Posted by CJ_Boxster

Yeah, Ill have to check. but i probably dont need to check cause im sure they are ready for a changin... I do have this tool that hooks up to a air compressor and is filled with a fine sand, I stick the sparkplug into this hole and pull the trigger and it sandblasts the sparkplug back to new looking condition.... I might use that since it's worked on my other TT cars it the past.

That's interesting. How much does a tool like that cost, and how many spark plugs do you have to restore to break even?

[CJ_Boxster]

Originally Posted by Dr. Kill

That's interesting. How much does a tool like that cost, and how many spark plugs do you have to restore to break even?

Heres one for 16 bucks http://www.importermall.com/Tool_Wholesaler/_Air-Spark-Plug-Cleaner_Sand-Blaster_Air-Tools_S11-air-spc.htm

Looks like the same one on eBay for 22 bucks 9 for shipping http://cgi.ebay.com/NEW-SPARK-PLUG-SANDBLASTER-automotive-tools-spark-plugs_W0QQitemZ4451842199QQihZ017QQcategoryZ43570Q QcmdZViewItemQQ_trksidZp1742.m153.l1262

so looks like it would pay for itself on its first use.

Mine essentially looks the same except mine is made by either Mac Tools or Craftsmen and look alittle more robust/professional grade... Also mine has a different air hose fitting than the ones shown in the ads i posted.