RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > The RadioReference Tavern > Automotive

Automotive Your car leaking? Want to discuss your cherry GTO? Discuss all engine powered four-wheeled contraptions here.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 08-03-2009, 3:53 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default Help Diagnose Car Problem

please see this link and give me your thoughts

1989 Pontiac Grand Prix Engine not running
Reply With Quote
Sponsored links
        
  #2 (permalink)  
Old 08-03-2009, 4:06 PM
gewecke's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2006
Location: Northwest Illinois
Posts: 5,702
Wink

Even though fuel pressure is up,and sensors are good your fuel filter could be plugged.Some gm cars have two filters,one in the tank as well as up front. Just guessing,but if it dogs out on acceleration then that's a clue. A hayne's book is worth it's weight in gold too!
N9ZAS.
Reply With Quote
  #3 (permalink)  
Old 08-03-2009, 4:19 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default

put new filter on when I did the fuel pump..thinking this was my problem at first..have a haynes manual but not much help..
Reply With Quote
  #4 (permalink)  
Old 08-03-2009, 7:06 PM
gewecke's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2006
Location: Northwest Illinois
Posts: 5,702
Wink

Maybe these guys can help?
N9ZAS.
www.jonko.com/autorepair
Reply With Quote
  #5 (permalink)  
Old 08-03-2009, 7:51 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default

that is a pay to website..looking for free advice
Reply With Quote
Sponsored links
        
  #6 (permalink)  
Old 08-04-2009, 12:39 PM
Caddop22's Avatar
Member
   
Join Date: May 2006
Location: Huntsville, Al.
Posts: 235
Default

Have checked the crankshaft sensor? I have heard this causing this type issue as well.
__________________
Ken
Pro-95 Pro-97 BC278CLT BC210XLT BC350A

Airborne
Reply With Quote
  #7 (permalink)  
Old 08-04-2009, 2:42 PM
Member
  Premium Subscriber
Premium Subscriber
 
Join Date: Apr 2008
Location: Tennessee
Posts: 245
Default Try This

AutoZone.com | Troubleshooting

I second the recommendation of Haynes manuals. I own several for different vehicles/machines.
__________________
APTN
Reply With Quote
  #8 (permalink)  
Old 08-04-2009, 5:16 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default

Quote:
Originally Posted by Caddop22 View Post
Have checked the crankshaft sensor? I have heard this causing this type issue as well.
that is about the only thing I have not checked...it is getting spark so I am assumming the CPS is good but I will check it
Reply With Quote
  #9 (permalink)  
Old 08-06-2009, 5:12 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default

checked the crank sensor today.It is good reading .3-.6 volts steady as engine is cranking
Reply With Quote
Sponsored links
  #10 (permalink)  
Old 08-06-2009, 9:43 PM
JWJ's Avatar
JWJ JWJ is offline
Member
  Premium Subscriber
Premium Subscriber
 
Join Date: May 2005
Location: Montgomery, AL
Posts: 3
Default

Not sure of cars history, and how often you drive it. As a long shot; Is it possible catalytic converter or exhaust is stopped up?
Reply With Quote
  #11 (permalink)  
Old 08-07-2009, 2:31 AM
Member
   
Join Date: Nov 2005
Posts: 91
Default

I took the EGR valve off and cleaned it to no avail..thought about the converter but have not checked it yet.
I'll take a look
Reply With Quote
  #12 (permalink)  
Old 08-07-2009, 12:12 PM
shaft's Avatar
Member
  Premium Subscriber
Premium Subscriber
Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2004
Location: Wentzville, Mo
Posts: 528
Default

Not sure about your car, but take a look at the mass air flow sensor. It might be between the air intake filter and the motor. I had one that had similar issues as yours, and turned out to have just a bit of dust on it. I took it off, cleaned it with electronics cleaner, left it off over night and installed it back. I havent had an issue in the last 10 mos since then.
Reply With Quote
  #13 (permalink)  
Old 08-11-2009, 12:14 AM
Member
   
Join Date: Nov 2005
Posts: 91
Default

checked the cat conv. getting good flow..
any thoughts..I'am still thinking timing jumped
Reply With Quote
  #14 (permalink)  
Old 08-12-2009, 9:38 PM
Raven95150's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jul 2006
Location: Nowthen, MN
Posts: 895
Default

Those "car pros" sure don't seem to know much.

That 2.8 has distributorless ignition, so a timing light won't do you much good because you cant adjust the timing anyway. Sounds to me like the timing chain jumped, especially since you say it died while you were accelerating. The only way to know for sure is to pull the timing cover off and take a look. If it did jump, you will want to put in a new timing chain because the old one will probably just jump again.
__________________
KD0AXS
Metro Skywarn #7344

Uniden BCD396T, BC250D, BC350A
RS PRO-84
Yaesu FT-2800M, VX-170
Reply With Quote
  #15 (permalink)  
Old 08-17-2009, 8:40 PM
OldsDoug's Avatar
Member
   
Join Date: Nov 2004
Posts: 121
Default Gp

I went through a similar problem with my '88 Firenza last winter... it's a different engine (2-liter OHC 4 with a throttle body), but this might help... I threw all kinds of parts at it... fuel pump, relays, sensors, computer, pickup coil, ign module... the car would start, run for 10 mins and quit.

It turned out to be the fuel injector itself... the little electric squirter on the throttle body. When it would warm up, it would start acting up... I finally found it by switching it out with a junkyard one after changing out all the other stuff mentioned above.

I'm sure your car isn't throttle-body, but am throwing this out in case it gives you or someone an idea. Good luck... my car never set a code and I had nothing to go on. I didn't read all the stuff here and in the other forum, but I take it you checked the spark?

(Someone mentioned timing chain, that could be a possibility too.) And the pros aren't necessarily pros - one local ****hot guy here kept insisting that my problem was the crankshaft position sensor... the Firenza doesn't have one! (I see somebody mentioned that as well, that could be it... I do know that that is a typical problem on the Buick V6 (3800).

Again, good luck!

D
__________________
"We're on our way, Rampart!"
Reply With Quote
Sponsored links
        
  #16 (permalink)  
Old 11-16-2009, 5:18 PM
Member
   
Join Date: Nov 2005
Posts: 91
Default

it was a bad fuel injector
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 8:04 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2011 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions