My Box wont start correct?

[P-51 Mustang]

I have a 2001 2.7 boxster with 70k miles on it and whenever I go to crank it it will turnover but not start up... However if I push the throttle down slowly and hold it down for 10 seconds then release slowly and repeat this 3 times it fires right up. What would cause this, I have had a lot of problems with the car specifically related to the throttle body and the MAF could this be the issue? Thanks!!!

[silver arrow]

I would check the residual pressure in the fuel system. Once you get it started is it fine for the rest of the day until the car sits for a few hours again? If so, the fuel pump maybe toast.

[juniinc]

I don't see how pumping your gas pedal would help start the car when 01 2.7 fuel system is controlled electronically,,,

Since she is packing 70.000 miles , fuel filter should've been replaced- clogged filter is a possibility, spark plugs should been replaced- bad plug can cause this , also clogged injectors? while U are holding your throttle for 30 seconds,its actually building more fuel pressure? a faulty fuel pump on this model is very rare.

First thing I would do is mix a can of Techron injector cleaner w/ full tank of Chevron Super,,,

Edited May 27, 2008 by juniinc

[P-51 Mustang]

I have already replaced the fuel pump and the fuel filter thinking the same thing. I read somewhere that holding the throttle down resets the throttle position indicator and yes the car runs fine after it is started up but no matter how long it runs for once you shut it off it will not crank again. The car has run fine in the past but I usually run premium shell gas but recently I put regular in it, could this be the problem?? Thanks!

[uabchris]

I am having the same problem except only after I gas up...yes, I know it sounds crazy, but after I hold the pedal to the floor it starts after 5-10 seconds. I did get a P0446 Evap canister CEL about a month ago but it has not been back. I even tried removing the gas cap by itself but the problem can only be replicated after gassing up. Must be a pressure issue??? I have replaced all the general tune up components and performed all cleaning with no luck. Seems to be common as the Boxsters approach 100K.

Still searching...

Chris

[CJ_Boxster]

I don't see how pumping your gas pedal would help start the car when 01 2.7 fuel system is controlled electronically,,,

Since she is packing 70.000 miles , fuel filter should've been replaced- clogged filter is a possibility, spark plugs should been replaced- bad plug can cause this , also clogged injectors? while U are holding your throttle for 30 seconds,its actually building more fuel pressure? a faulty fuel pump on this model is very rare.

First thing I would do is mix a can of Techron injector cleaner w/ full tank of Chevron Super,,,

You probably answered his question without realizing it... Could be that his Throttle Plate Actuator on the throttle body is probably acting up... He should check his car for any new P-codes.