Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: May 2000
Location: Louisville
Posts: 292
Garage
Hesitation, intermittant start, etc.

My car is an '87 944S with hesitation, and sometimes when I crank it, it starts and dies immediately. If I keep trying to start it it after 3-5 times it will eventually stay running. It is usually hard to start when the engine is cold and the car has been sitting in the hot sun. I've replaced the cap and rotor, fuel filter, fuel pressure regulator and associated vacuum lines, checked fuel pressure, cleaned the electrical connections to the AFM and adjusted the wiper track inside the AFM to run on a fresh track. I also cleaned the connections to an electrical connector beneath the drivers side head light. The car always hot starts well. Sometimes when I'm driving the tachometer will drop to zero and the engine feels like it dies then it comes alive again immediately. This happens so fast that if you blink you'll miss it. Sometimes the engine does this when I'm at a stoplight and it will usually die but it always re-starts. Also the idle is high. It idles warm or cold at 1100 rpm and sticker in the engine compartment says it should idle at 840 +or- 40. What could this be? The temp sensors maybe? anyone know where they are located? Thanks for any help on this.
__________________
2000 Boxster S
'73.5 911T
'87 944S
'78 928 w/ 13K miles (5 speed)
'75 914 2.0
Old 07-17-2004, 07:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Check the hall sensor on the end of the cam housing. Also check the ignition module.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 07-17-2004, 08:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: May 2000
Location: Louisville
Posts: 292
Garage
Where is the ignition module and how do I check the hall sensor? Thanks
__________________
2000 Boxster S
'73.5 911T
'87 944S
'78 928 w/ 13K miles (5 speed)
'75 914 2.0
Old 07-17-2004, 08:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Ignition module is the small plastic thing attached to the coil. Should be close to the coil under the hood.

Need to check the factory manuals for testing these.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 07-17-2004, 06:51 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: May 2000
Location: Louisville
Posts: 292
Garage
Ok I'll check them out. Anyone have the factory manuals that they can check the specs on these two things and post them here?
__________________
2000 Boxster S
'73.5 911T
'87 944S
'78 928 w/ 13K miles (5 speed)
'75 914 2.0
Old 07-19-2004, 09:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jul 2003
Location: Denver, Colorado
Posts: 76
Did you find the hesitation problem yet?

My 86 na is doing the same thing you described. Everything completely dies and then comes right back.

I replaced my alternator because of bad bearings and the problem seemed to go away for about a month. Then today it took several tries to get it started. I then drove around to make sure it was going to run. After about a mile, the hesitation happened again.

The car had been setting for a few days. It also had a fresh tank of gas.

Could I be lucky enough to just have a bad tank of gas?
__________________
86 NA
Old 11-11-2004, 05:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
Registered User
 
Join Date: Jul 2003
Location: Denver, Colorado
Posts: 76
Checked some more posts on this subject. DME relay came up a lot.

Went out and cranked it. Nothing. Pulled DME relay. Whacked it a few times. Put it back in. Fired right off.

I think I'll go get a new relay
__________________
86 NA
Old 11-11-2004, 07:50 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: May 2000
Location: Louisville
Posts: 292
Garage
Yes, my problem turned out to be very simple- the ignition wire between the coil and cap.
__________________
2000 Boxster S
'73.5 911T
'87 944S
'78 928 w/ 13K miles (5 speed)
'75 914 2.0
Old 11-12-2004, 02:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:58 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.