« previous next »
Pages: 1 [2] 3   Go Down

Author Topic: starts an dies  (Read 11829 times)

0 Members and 5 Guests are viewing this topic.

Offline shmed

  • Turbo Street Limited
  • ***
  • Posts: 171
  • PSI: 0
    • View Profile
Re: starts an dies
« Reply #15 on: October 10 2016, 04:07:18 PM »
when the maf is unplugged an it does run   fuel pressure is at 42 line off.
 when it is running   the idle is around 1800????
 regardless of throttle plate stop location

Logged

Offline shmed

  • Turbo Street Limited
  • ***
  • Posts: 171
  • PSI: 0
    • View Profile
Re: starts an dies
« Reply #16 on: October 10 2016, 04:08:03 PM »
glad its our thanksgiving  and I'm cooking an drinking an doing garage things lol   the guests just love it  lol

Logged

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1571
  • PSI: 6
    • View Profile
Re: starts an dies
« Reply #17 on: October 11 2016, 01:42:05 AM »
Quote from: shmed on October 10 2016, 04:04:51 PM
earl what is the  koef  test?    i did try key on engine off an af was at 4   then full  throttle still 4  is this what you mean?
      no translator  stock maf

You did it right.  If the MAF reading stays the same that means the ECM is communicating with the MAF.  If the number goes up as you push the throttle, that means the ECM is having to guess as the airflow and there's no communication.

That test can spin you out if you're running a Translator with a bad MAF. as it means the ECM is in contact with the Translator thinking it's talking to a MAF but there isn't any actual airflow data going to the translator.
Logged
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6517
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: starts an dies
« Reply #18 on: October 11 2016, 08:33:36 AM »
Glad to see Chuck is here.
You did check that the TPS is a reasonable voltage and not stuck?
Logged
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline larrym

  • Turbo Street Eliminator
  • ******
  • Posts: 1363
  • PSI: 1
    • View Profile
starts an dies
« Reply #19 on: October 11 2016, 02:16:09 PM »
I have had a similar symptom with a translator unplugged at the MAF check your wiring to the MAF


Sent from my iPhone using Tapatalk Pro
Logged
86 white T type with t tops and blackout trim. 60lb injectors Gen 2 with Extender Chip TR6 ignition 212/206 roller cam Turbonetics BB CPT 61 CAS V4 Intercooler Cobbled together Alky Injection 4 inch MAF pipe with integral sensor
2800 stall lots of fun with a little 6 banger!
Best ET 11.36

Online TexasT

  • Legend in my own mind
  • Turbo Street Outlaw
  • *******
  • Posts: 2171
  • PSI: 1
  • So, This black car is fast?
    • View Profile
Re: starts an dies
« Reply #20 on: October 11 2016, 03:06:20 PM »
Quote from: daveismissing on October 11 2016, 08:33:36 AM
Glad to see Chuck is here.
You did check that the TPS is a reasonable voltage and not stuck?

I'm sure he read about the circle jerk and wanted to see what it was all about. Haha
Logged
Rich

"Goals without actions are just dreams."

Offline shmed

  • Turbo Street Limited
  • ***
  • Posts: 171
  • PSI: 0
    • View Profile
Re: starts an dies
« Reply #21 on: October 11 2016, 06:00:16 PM »
ok  am i on to something here or still spinning my wheels...


after speaking   with my helper...  he tells me he had the iac out an  it was stuck  so he unstuck it???    but said it worked fine near the end of last season??


SO  i unplugged the iac  an it started up  like its supposed to just rpm was in the 1500   area ??


ideas thoughts??



Logged

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 9950
  • PSI: 34
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: starts an dies
« Reply #22 on: October 11 2016, 06:09:04 PM »
the IAC is a solenoid.  Trying to fix it probably broke the plunger connection some how??
Logged
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 5599
  • PSI: 3
  • RED-RETIRED EXTREMELY DANGEROUS
    • View Profile
Re: starts an dies
« Reply #23 on: October 11 2016, 06:14:18 PM »
Shmed, I think you can still buy the IAC from the dealer. Got a new one for my car a few years back.
Logged
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6517
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: starts an dies
« Reply #24 on: October 11 2016, 06:35:56 PM »
Its a bipolar stepper motor inside ,must turn a screw like part inside to move the visible part in and out a tiny bit. Dunno how one would even unstuck-it.
Logged
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6517
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: starts an dies
« Reply #25 on: October 11 2016, 08:26:53 PM »
Rockauto show them for $25-55 CDN. seem readily available
Logged
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1571
  • PSI: 6
    • View Profile
Re: starts an dies
« Reply #26 on: October 11 2016, 08:48:16 PM »
Quote from: daveismissing on October 11 2016, 06:35:56 PM
Its a bipolar stepper motor inside ,must turn a screw like part inside to move the visible part in and out a tiny bit. Dunno how one would even unstuck-it.

I was thinking the late 80's F-bodys had the threaded ones you could adjust but ours was fixed.

That being said, years ago I noticed one in the junkyard on a plain ole shitbot GM beater car and grabbed it.  It works fine on my GN to this day.
Logged
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline Just a Six?

  • OK Now who Farted??
  • Turbo Street Eliminator
  • ******
  • Posts: 1253
  • PSI: 2
    • View Profile
Re: starts an dies
« Reply #27 on: October 12 2016, 06:44:38 AM »
Blast off the carbon if dirty with some Brake Cleaner etc & try it again. Can`t hurt.
Logged
David
87 LTD. Purchased May 88
Doeskin leather, coach lites without Landau Roof, moon roof, carpeted trunk & No Factory Hood Ornament!
The sticker on AC shows a V-8 Carb car. Special order by Mr. Nick Hall VP of GM Canada
Runs 11.50 on 21 lbs with my old style 67 Q Trim & Alchy

Offline shmed

  • Turbo Street Limited
  • ***
  • Posts: 171
  • PSI: 0
    • View Profile
Re: starts an dies
« Reply #28 on: October 12 2016, 04:26:51 PM »
well replaced it with a new one  no change   starts then dies??


could this be a vacuum leak ??? 
Logged

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6517
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: starts an dies
« Reply #29 on: October 12 2016, 06:06:47 PM »
And still runs at 1500 if you unplug IAC?
Logged
-Drain plug by Earl Brown, custom oil pan by Rich's Auto
Pages: 1 [2] 3   Go Up
« previous next »
 
SimplePortal 2.3.7 © 2008-2024, SimplePortal