Just installed cold air intake and now car dies.

[projo198]

New member here, sorry to start out with a problem but I have discovered that when I am searching for Z-related issued I usually get linked to this forum!

Last night I installed my cold air intake pipes and cone filter. The car ran fine afterwards, but as of this morning it dies unless it is in gear or I keep on the gas. It also hesitates on the highway, kind of like it is constantly push starting itself when coasting.

Here are a few things I can think of.

1) Because the factory vacuum lines were too short I replaced them with new longer ones, however I noticed the original smaller lines on both sides that run to the top of the motor had small wire-brush looking inserts inside that I assume are debris filters. I was worried about these getting sucked up into the engine so I did not put them in the new hoses.

2) These same 2 hoses are really loose on the new intake pipes. They were not last night, but this morning I easily slipped both off with my fingers.

3) The right intake pipe needs to be shifted a bit, after running today it is a little askew of the throttle body inside the top coupler. Not much but not flush either.


I am stuck at work but am going to try and address these. Are there any other things I need to check or are routine when doing a cold air intake? The MAF is in place and connected and I found no gaps in the couplers.

Thanks.

[NolimitZ32]

Not really understanding what you did there so post some pics.

[projo198]

Wouldn't be sure what to take pics of I just did a cold air intake install and replaced the vacuum hoses because they were too short.

Anyway I think I got it fixed; I began to adjust the idle and when I manipulated the IACV connection it sounded better, so I cleaned the connection, finished adjusting the idle and so far so good. Guessing while jostling the harnass around doing the install it had come lose or otherwise created bad contacts.

Hoping this was the only problem but will update if not.

Thanks.

[projo198]

Am now thinking it is too much airflow over the pop charger causing bad readings on the MAF sensor. I am going to replace the small shield that was attached to the original airbox tonight and might do the flower pot mod to see if this helps.

[Ace2cool]

That was going to be my suggestion.

[projo198]

Well I taped up the front of the filter and it ran home great, so tonight I did the flower pot thing and it turned out great. Gues I got this, thanks!