Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 12-18-2019, 08:27 AM   #3
Registered User
 
Join Date: Aug 2018
Location: Woodland Wa
Posts: 1,316
Quote:
Originally Posted by poortmanc View Post
Good Day all,

Since a few months my 1997 2.5l Boxster is having cold start issues which are slowly getting worse.

The engine stalls immediately on a cold start - or when I have attempted to start it several times, the idle starts hunting up and down until it slowly settles. Touching the gas pedal helps a bit as it warms up the engine quicker.

Things which are already done:
- Checked for codes - none found
- O2 sensors changed
- IMS changed
- Clutch changed
- Chain guides changed
- Camshaft deviation checked
- MAF changed
- Checked for vacuum leaks
- AOS changed
- Plugs + tubes changed

Once hot - car starts fine though performance doesn't seem optimal during driving.

https://youtu.be/aCvgvcqTgU8

I hope someone can help me out - getting quite tired of this. Please check the video for reference
1. How many miles on the car.????
2.hookup a scanner to the OBDII and look at coolant temp when dead cold,
before you try to start it.
What does it read????

A faulty Temp. sensor can show a false (warm) coolant temp when the engine is dead cold. The ECU thinks the engine is warm so it does not enrich the fuel (pulse injectors longer) for cold start.
Let us know what you find.
blue62 is online now   Reply With Quote
 

Tags
cold , hunting , idle , problem , start



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 06:19 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page