Printable Version of Topic

Posted by: bd1308 Aug 12 2005, 12:32 PM

helping someone else....

L-Jet injectors don't fire

points set correctly.

what would cause something like this to happen?

fuel pressure is there so evidentally it's not an issue of the power to the computer.

i'm trying to save another 914.

tell me what to check on.....i know 0 about L-jet...

Posted by: Mueller Aug 12 2005, 12:54 PM

L-jet injectors fire when key on, air flapper open, and coil collapses

first thing to check is the dual relay near the battery and the resistor pack........

Posted by: bd1308 Aug 12 2005, 01:02 PM

forgive me being stupid, but what am i looking for when i test this dual relay?

Posted by: Mueller Aug 12 2005, 01:05 PM

QUOTE (bd1308 @ Aug 12 2005, 12:02 PM)

forgive me being stupid, but what am i looking for when i test this dual relay?

electricity, namely 12vdc !!!!!

do a google search on L-Jet...there are some good websites that'll tell you what every single terminal does on the relay and the wiring harness.......

Posted by: bd1308 Aug 12 2005, 01:10 PM

okay....will do.

i'm helping the VW guy put another 914 on the road.

Posted by: jimkelly Aug 12 2005, 01:17 PM

http://members.rennlist.com/914_wiring_harnesses/

Posted by: type47 Aug 12 2005, 01:24 PM

the resistor pack is easy to troubleshoot. just look for continuity for the 4 resistors, one for each injector: no broken/open wires. if you have a "Lash", the old clymer book (an old 914 manual, like the haynes), there is a nice pix of the dual relay. maybe you could test it to see if it works properly.

Posted by: ejm Aug 12 2005, 05:35 PM

QUOTE

forgive me being stupid, but what am i looking for when i test this dual relay?

Quoting myself from a post over at the bird:

QUOTE

First check for battery voltage (12V+) at 88z (power from battery) then voltage at 86c (power from coil terminal 15) with the key on and make sure that terminal 85 goes to a good ground. 88a - power out to air flow meter contact - 12V with the key on 86b - power in from air flow meter contact - 12V when cranking (with no big vacuum leaks) or moving the airflow flap by hand 88d - power out to the fuel pump - 12V when cranking or moving the airflow flap by hand 88c - power out to the aux air regulator - 12V when cranking or moving the airflow flap by hand 88b - power out to ECU and resistor pack - 12V with key on 86a - power in from starter terminal 50 - 12V when cranking 86 - power out from 86a to cold start valve and ECU - 12V when cranking

Posted by: scotty b Aug 14 2005, 05:28 PM

QUOTE (bd1308 @ Aug 12 2005, 11:10 AM)

okay....will do. i'm helping the VW guy put another 914 on the road.

So now the half assed VW mechanic who has previously given you bad info is relying on YOU to help him get a 914 running????? God help us all if it has an oil leak..........................

Posted by: redshift Aug 14 2005, 05:47 PM

Posted by: bd1308 Aug 14 2005, 06:46 PM

QUOTE (scotty b @ Aug 14 2005, 05:28 PM)

QUOTE (bd1308 @ Aug 12 2005, 11:10 AM) okay....will do. i'm helping the VW guy put another 914 on the road. So now the half assed VW mechanic who has previously given you bad info is relying on YOU to help him get a 914 running????? God help us all if it has an oil leak..........................

i cant take this car apart every three days.

the oil leaks are very small now.

i'll live.

come on man...

Posted by: Bleyseng Aug 14 2005, 07:40 PM

QUOTE (bd1308 @ Aug 14 2005, 05:46 PM)

QUOTE (scotty b @ Aug 14 2005, 05:28 PM) QUOTE (bd1308 @ Aug 12 2005, 11:10 AM) okay....will do. i'm helping the VW guy put another 914 on the road. So now the half assed VW mechanic who has previously given you bad info is relying on YOU to help him get a 914 running????? God help us all if it has an oil leak.......................... i cant take this car apart every three days. ...

Why not? thats what most of us spend time doing......

Posted by: Joe Ricard Aug 14 2005, 07:43 PM

QUOTE (bd1308 @ Aug 12 2005, 11:10 AM)

okay....will do. i'm helping the VW guy put another 914 on the road.

Who's gonna help you with yours?

Posted by: bd1308 Aug 14 2005, 07:55 PM

mine's on the road....

Posted by: Bleyseng Aug 14 2005, 08:16 PM

ahhhh....for how long is the question.

Posted by: bd1308 Aug 14 2005, 09:28 PM

as long as i can keep it on the road safely.

Posted by: rhodyguy Aug 14 2005, 11:56 PM

"hey britt, i've got an l-jet problem!", "give me 15 minutes and i'll see what the guys at the club site have to say".

k

Posted by: bd1308 Aug 15 2005, 05:06 AM

i dont know everything!