Hesitation with cold motor
#1
Hesitation with cold motor
Can someone tell me why my 2005 997 hesitates during take off while the engine is cold. Keeps doing that until engine oil warms up yo around 200. Changed the spark plugs since car has 63K miles. Need to clean body throttle? Please help.
#2
I had a similar issue. I changed the plugs and a faulty coil, it solved the problem. if you changed the plugs I would check the ignition coils next.
Last edited by krysFly; 09-12-2012 at 07:08 PM.
#7
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#9
Is this a serious question? j/k When you say hesitates, do you mean a significant off idle stumble when cold, or just a noticeable power difference under acceleration? Are you overloading the engine when cold? Cars are engineered to run properly at operating temperature. No cold engine runs as well as when the engine is operating in the designed temperature range. Lots of factors could be related to poor performance. Stop guessing and take it to someone who can determine an issue if there is one.
#10
No. This is not normal. My cars always run the same whether cold or warmed up. The difference is I never push the car too hard until it's properly warmed up.
Last edited by denversteve; 09-15-2012 at 01:05 PM.
#11
Would suggest you clean the throttle body and MAF sensor if it has never been done. CRC makes a seperate spray on solution for both. Auto Zone has 'em. Just did mine after noticing build up inside throttle body. If it's there it's on your MAF.
#12
Thanks danversteve and dadio. I never push my car when cold. That is a given. Also, cleaning the MAF was my next item to check. It seems that it is a very common item to do. Is cleaning the body throttle also very common? What should be the frequency on both MAF and body throttle?
#13
Thanks danversteve and dadio. I never push my car when cold. That is a given. Also, cleaning the MAF was my next item to check. It seems that it is a very common item to do. Is cleaning the body throttle also very common? What should be the frequency on both MAF and body throttle?
#14
I've never had to do it after three Porsches. Before taking anything off and cleaning it without a known need, I would run a bottle of SeaFoam through the system and see if that helps. It usually cleans things needed cleaning pretty well.
#15
Agree with this no-touch approach. But since I don't think it will be heeded, my only suggestion is make sure you explore and clean during the week so you can run to the dealer and get new parts when you break something. Seriously, physically messing with the MAF is a disaster waiting to happen. OP really needs to better define what seems to be the issue when cold, anything from noises to power irregularities. I'm assuming everything runs normal when warm. That in itself has me thinking there probably isn't an issue. With that, I think I'm done.