Hard Starting - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-03-2005, 04:56 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Thanks: 0
Thanked 0 Times in 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default Hard Starting

I was hoping I could get some advice regarding my problem.

Problem
The car cranks over for approximately 20 seconds before it even seems like it may attempt to start.

Symptoms:
-Whenever the bonne is cold (summer time) it won't start the first time I try. Even if I crank it over for approximately 30 seconds.
-Second try, if it starts, (which is usually the case) it'* within 10 seconds and idles smooth.
-Third try, if it starts, it will start within 5 seconds and sputter slightly
-If it hasn't started yet, on the 4th try it will start within 2 seconds and sputter a lot before coming to a smooth idle.
-As the outside temperature gets colder (eg. 5 degrees C) it starts first try within 5 seconds.
-It seems to start better in cold temperatures.
-This has been ongoing for approximately 4 months and the level of fuel in the tank seems to have no effect.

Items replaced on the car by me just before this started happening:

Installed Rebuilt Starter, replaced Fuel Pump & Sock, Replaced Fuel Filter,


Items replaced with the last 8 months:

Plugs, wires, ignition coil, power pack, pcv valve, air filter.


Note that when the car is up to operating temperature, it starts everytime within a couple of seconds

I would appreciate any feedback since I'm concerned it may leave me stranded when I need her the most, especially with winter coming.

Thanks in advance
Frank
Maymybonnieliveforevr is offline   Reply With Quote
Old 11-03-2005, 07:40 PM   #2
Senior Member
Posts like a Camaro
 
Join Date: Jan 2003
Location: Jenison, MI (Near Grand Rapids)
Posts: 1,070
Thanks: 0
Thanked 0 Times in 0 Posts
theJMFC is on a distinguished road
Default

Have you checked the fuel pressure at the fuel rail? You did just replace the pump and filter, but the regulator could be bad.

If that checks out, maybe the ignition?
theJMFC is offline   Reply With Quote
Old 11-06-2005, 05:22 PM   #3
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Thanks: 0
Thanked 0 Times in 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

No I haven't checked out the pressure on the fuel rail yet since I don't have the proper gauge set up. I'll have to try to locate one first.

Thanks for the advise theJMFC
Maymybonnieliveforevr is offline   Reply With Quote
Old 11-06-2005, 08:38 PM   #4
Member
Posts like a V-Tak
 
Join Date: Sep 2004
Location: Hilton, NY
Posts: 71
Thanks: 0
Thanked 0 Times in 0 Posts
jrw1234 is on a distinguished road
Default

Its possible that you have a bad injector, or fuel pressure regulator. I'm seen bad temp sensors cause the car to start hard when its cold. I would check your fuel pressure before you start your car, and let it sit over night with the fuel pressure guage on the rail and see if you loose fuel pressure. Very common to see a bad injector leak down over time, meaning it won't hold fuel pressure.


Jay
jrw1234 is offline   Reply With Quote
Old 11-06-2005, 08:48 PM   #5
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Thanks: 0
Thanked 0 Times in 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

Quote:
Originally Posted by jrw1234
Its possible that you have a bad injector, or fuel pressure regulator. I'm seen bad temp sensors cause the car to start hard when its cold. I would check your fuel pressure before you start your car, and let it sit over night with the fuel pressure guage on the rail and see if you loose fuel pressure. Very common to see a bad injector leak down over time, meaning it won't hold fuel pressure.


Jay
What I find odd is that it starts better the colder the ouside temperature is. Also when the car is up to operating temperature it starts great.

Frank
Maymybonnieliveforevr is offline   Reply With Quote
Old 11-07-2005, 01:03 AM   #6
Senior Member
Posts like a Supercharger
 
Join Date: Apr 2005
Location: Naperville, IL
Posts: 176
Thanks: 0
Thanked 0 Times in 0 Posts
RareGMFan is on a distinguished road
Default

My Turbo Grand Prix started doing the EXACT same thing a few weeks after I got the fuel pump replaced (wasn't starting at all prior to that). It ran perfectly for weeks, then started having your same symptoms. Very hard to start in the morning, starts on a dime when it'* warmed up. And now that it'* getting cold out, I noticed it'* starting on the first try. I had the fuel pump, sending unit, and filter changed, along with the fuel tank and injectors cleaned. I still need to check the pressure, but I'm very suspicious of the regulator at this point. It'* the only fuel related thing that wasn't touched. Not that any of the brand new parts couldn't be faulty. But I planned on replacing the FPR anyway, so we'll see if that doesn't cure it. By the way......is the crank position sensor a possibility as well?
RareGMFan is offline   Reply With Quote
Old 11-07-2005, 01:05 AM   #7
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,857
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

Quote:
Originally Posted by RareGMFan
By the way......is the crank position sensor a possibility as well?
very unlikely, as these normally act up when hot.
rjolly87 is offline   Reply With Quote
Old 11-08-2005, 11:51 AM   #8
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Thanks: 0
Thanked 0 Times in 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

I'm curious to see if the FPR makes a difference for you RareGMFan, as for the crank sensor it was replaced approximately 10,000 KLM ago.

What motor is in your Grand Prix RareGMFan?


Thanks for all the responses.
Maymybonnieliveforevr is offline   Reply With Quote
Old 11-28-2005, 05:25 PM   #9
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Thanks: 0
Thanked 0 Times in 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

Just wondering if RareGMFan, solve the same problem he or she was having with there car. My car starts up first try in the morning when it'* the coldest. I should be ok during the winter months but I wish I could fix it before the summer when the problem is worst.


Any idea'*
Maymybonnieliveforevr is offline   Reply With Quote
Old 12-02-2005, 12:20 PM   #10
Senior Member
Certified GM nut
 
Join Date: Feb 2004
Location: CT
Posts: 2,099
Thanks: 0
Thanked 1 Time in 1 Post
SSEBONNE4EVA is on a distinguished road
Default start

Yes check the fuel pressure.
Also check the
TPS voltage at idle (engine off). C motor should be 4.2 - 4.6 volts. remove and clean the MAF and IAC sensors.
I believe during cold starting in open loop the ecu uses the crank & TPS signal.
You should also check your egr and look for vac leaks.
Thats just my 2 cents worth.
SSEBONNE4EVA is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4T65E hard shifting when driven hard pontiacandryan 1992-1999 14 06-29-2009 05:25 PM
Hard Starting When Hot Harborcity 1992-1999 15 03-26-2004 12:03 PM
hard starting delta 1989 just FYI bonnie90se Oldsmobile 2 10-15-2003 08:09 AM
Hard starting Tonyrodz 1992-1999 25 03-03-2003 10:14 PM
Starting hard 2000 Silver SSEI 1992-1999 4 02-15-2003 10:40 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:57 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.