micahtatar

hi everyone i live in narrows virigina i have a porsche 928 1983 i sold it to a guy who let it sit for almost 5 years i sold it cause i did not have the money at the time to buy a fuel pump all it needed well i bought it back bought the fuel pump and now it fires up and then dies fuel is getting to fuel rails and injectors spark everything tho seems like they jumped where the fuel pump relay is on 19 spot and ran a toggel switch now the battery is shot but i jump it and try to start and like i said will start every time just wont stay running also i think someone has messed with the screw infrom of spiderwell for air to fuel ratio i am in need of so much help ive spent so much and to no avial im running out of money i have abour 400 dollars left if that ill hafta look please can anyone help me oh also seems as when i hit the gas pedel it dies instant wont stay running more than turn key wrooom putt putt putt dead every time

micahtatar

i also have put in new fuel pump new sparkplugs i noticed that there where the Mass air flow module is and goes down into the whole theres no boot there does there hafta be a boot like where the round metel part goes into the other metel hole that sounds stupid not sure if u will know what i mean but where the part goes into not the mass air flow but the whole unit the air box and all that goes down into engine like a circle spot and fits in there is there not some rubber should be around that or just when u tighen down the air box and all its in there and dont need to be super sealed i know air is a big thing with the cars so im ot sure

M. Requin

First, assume the lotus position... now, breathe. And then, grasshopper, wait for the wisdom that will flow to you from this board.

micahtatar

well my mom just died and gf left me and i missed the porsche i cant wait to just take a long drive and maybe be happy again or atleast have some happyness

Mrmerlin

First my condolences for the loss of your mom.
you will find a new gf,

did you clean out the fuel tank?
did you replace the 3 running relays?

micahtatar

no sir i have not i dont know if i can remove gas tank the relays if theres a cheep place to buy them i will buy those

danglerb

83 starts and dies, US or Euro 83?

Sorry to hear about your mom, gf that leaves at a time like that good riddance.

Take your time on the 928, without huge luck and/or money it will take some time and money before its safe to drive. Wash it, sit in it and enjoy the leather smell, but take your time before trying to drive it. First thing I would attend to are the high pressure rubber fuel lines, then proceed with a general cleanup.

Post your location and see if someone is local that can take you for a ride to cheer up and have a look at your car.

micahtatar

its US version it might come down to i hafta sell i sure hope not

Dave928S

^^^ good advice !

jpitman2

Screw at front of spider is usually idle speed , not mixture. Sounds like its starting on the cold start injector. If the main injectors are not providing enough fuel, the temp sensor telling the ecu how much fuel to send may have failed, or it maybe the thermotime switch has failed - this provides rich mixture for a short time on start up. Do some research on how to identify the relevant temp sensor (one is for gauge, one is for ECU), check its resistance (3k ohms cold, 2-300 hot) - if it looks wrong, try starting with the connector removed. if it stays running , it will gradually go rich as it warms and die after some minutes - normal for a disconnected temp sensor - replace it.
jp 83 Euro S AT 55k

Randy V

Are you sure you want to add an old 928 to the list of crappy things life has thrown at you lately?

A used, neglected 928 is rarely a source of happiness in the short term.

Just want to share a glimpse of realism with you in order to head off a potential big disappointment.

Good luck.

Alan

What Randy said first...?

Always fix what you know to be needed first... So get a new battery - start there, if the battery is fried you may be wasting your time with everything else.

Alan

Fogey1

Welcome aboard micahatar.

Here are a bunch of links about L-jet cars with problems. Some reading may help you in your work and also help you in your search for resources/info.

https://rennlist.com/forums/928-foru...t-on-cold.html
1983 Porsche 928s - Bad start on cold

https://rennlist.com/forums/928-foru...-jetronic.html
Asking for help..no start 1982 L-Jetronic

https://rennlist.com/forums/928-foru...-no-start.html
Phooey! No start

https://rennlist.com/forums/928-foru...ont-start.html
83 928S Won't Start - 2002-2009

https://rennlist.com/forums/928-foru...-question.html
Another No Start Question
Start 8/10 still going 5/12

https://rennlist.com/forums/928-foru...-no-start.html
Recently purchased 1984 928s auto. Will not start, I drained the tank replaced the fuel pump, cleaned the grounds and checked relays. It has fuel pressure at the rail and 12v at the injectors, my issue i have 12v at the 10 and 29 pins with ignition off but drops to .17v with key on. I have good ground continuity at 5,16,17and 35 pins. Will start with fuel poured in flapper. Any suggestions?

https://rennlist.com/forums/928-foru...-no-start.html
https://rennlist.com/forums/9525668-post2.html
No-start is a common thread here and elsewhere: I know as I'm having problems with my own '82. And so I offer these threads while you wait for responses.
http://forums.pelicanparts.com/porsc...ump-short.html

https://rennlist.com/forums/928-foru...non-start.html
Porsche 928 Non Start

https://rennlist.com/forums/928-foru...rebuilder.html
L jet AFM rebuilder

https://rennlist.com/forums/928-foru...ork-video.html
wanna see an Aux Air Valve at work? (video)

https://rennlist.com/forums/928-foru...em-lemons.html
84 US L jet idle-running problem (lemons)???

https://rennlist.com/forums/928-foru...-no-start.html
83 928 stalled and no start

https://rennlist.com/forums/928-foru...r-pin-out.html
L-Jetronic Connector Pin-out

https://rennlist.com/forums/928-foru...s-in-need.html
84 auto L-jet brain...anyone have one? norcal lemons in need

WALLY'S ANNUAL ELECTRICAL PM thread
Wally's annual PM is reprinted at this link:
"From a link in the newbie faqs....Wally's yearly electrical PM should be in EVERY shark owners files...."
https://rennlist.com/forums/4283785-post5.html

Groundpoints
http://members.rennlist.com/fabric/groundpoints2.jpg

https://www.928gt.com/default5.htm

http://www.928intl.com/repair.htm

https://rennlist.com/forums/928-foru...ting-done.html
Car Won't start. Plenty of searching ans troubleshooting done

j.kenzie@sbcglobal.net

Fogey,
Great post. I hope he has time and inclination to read through them.
Dave