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
 
Join Date: Nov 2020
Posts: 2
Porsche Crest 1987, 944s running lean.

What's up, I have an 87 944s and I'm having a couple of issues. When I bought the car I didn't know it had several different injectors in it... it actually had one injector for a turbo model and one for a 928. The wrong injectors caused a misfire, So I've now replaced them with remanufactured genuine Porsche injectors. However, the car is now running lean. I've put sea-foam through it once to try and clean all of the old gunk out. after I did that I inspected the injector wires and I've replaced them all. the car runs and drives with no problem but it is definitely running lean. I replaced the coil, and the cap and rotor and the wires. The only three things I can think of that would cause the car to run lean are, a.) timing, b.) o2 sensor, and c.) the DME?

Old 11-06-2020, 08:14 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
Join Date: Jul 2004
Location: Upstate New York
Posts: 2,482
What is your fuel pressure reading?

If good, then your coolant temp sensor might be bad. Maybe a bad ECU.
__________________
Good luck, George Beuselinck
www.944ecology.com
Porsche Deconstructor (tm)
We buy 944s and sell 944 parts (845-379-1944)
We rebuild torque tubes and instrument clusters for 944/968/928
Old 11-06-2020, 10:52 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Kessel run in 12 parsecs!
 
Fast Freddy 944's Avatar
 
Join Date: Dec 2015
Location: DFW Texas
Posts: 1,917
Garage
Have a porsche dealer check it out, the can do a diagnostic on it and see whats up..
__________________
Keep cool man..
Old 11-06-2020, 07:09 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
In the Fires of Hell.....
 
kdjones2000's Avatar
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 3,327
Garage
Vacuum leak?
__________________
NASA/PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details
Old 11-06-2020, 07:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
Join Date: Mar 2008
Location: Nashville, TN
Posts: 3,826
how are you so sure it is running lean?
do you have a wideband O2 hooked up, or is it failing smog?

Old 11-07-2020, 04:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 

Tags
lean fuel , spark plugs , timing belt


All times are GMT -8. The time now is 09:02 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 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.