Crank Position Sensor?? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-19-2007, 06:32 PM   #11
Member
Posts like a V-Tak
 
Join Date: Aug 2007
Posts: 82
Thanks: 0
Thanked 0 Times in 0 Posts
fbody69 is on a distinguished road
Default

You can check for spark the old fashioned way you are used to.
From your original post I didn't think your main problem was the crank sensor. You probably had an intermittently bad crank sensor and another problem too. Since you had crank sensor codes you are better off with the new one. If you have spark, I would look at the fuel regulator next. Check the vacuum line running to it for cracks and also try to smell and look for gas.
fbody69 is offline   Reply With Quote
Old 12-27-2007, 02:24 PM   #12
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2005
Location: Littleton, CO
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
ColoBonne is on a distinguished road
Default

I'm getting more frustrated by the moment.
Replaced the fuel pressure regulator, still wont start. Here'* where i'm not sure what could be the problem. While I was replacing the regulator and relieved the fuel line pressure, fuel came out of the relief valve with a pretty good spray. But once I replaced it and the car still wouldn't start, I pressed on the relief valve again to see if there was fuel there, and fuel came out, but it was more like water coming out of a hose, no spray like there was some pressure behind it.
Can the fuel pump go out like this? Still pumping gas but not with enough pressure? Is the fuel filter a possibility?
Now if it would only stop snowing here so I could work on the car
ColoBonne is offline   Reply With Quote
Old 12-27-2007, 06:33 PM   #13
Member
Posts like a V-Tak
 
Join Date: Aug 2007
Posts: 82
Thanks: 0
Thanked 0 Times in 0 Posts
fbody69 is on a distinguished road
Default

Check to see if the plugs are wet. Did you test for spark? If you did have a bad regulator the plugs could be soaked to the point it will not start.
fbody69 is offline   Reply With Quote
Old 01-28-2009, 12:38 PM   #14
Member
Posts like a V-Tak
 
Join Date: Dec 2004
Location: Alabama
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
silver_SE is on a distinguished road
Default

I'm feeling your pain bro... My bonnie'* been acting up like this also. You can get a pressure gauge from Autozone for a $150 deposit (refunded when you bring it back). Then, you can check the pressure at the port. It should be 53-59 psi (as per Alldatadiy.com). I'm thinking the pressure regulator or the fuel pump.

One other sugggestion. A buddy of mine said that fuel pumps typically die via a "dead spot". So, they will usually seize up in this "dead spot". He said a mechanic check a fuel pump on his truck by turning on the ignition, listening to see if the pump was running, it wasn't running, then he banged his hand on the fuel pump area and you could hear the pump spin up. I'm gonna' try this tonight (and also check the fuel pressure).

I've replace the plug wires, replaced the fuel filter, replaced a MAF sensor (got a check engine light code on that one). So, now I'm down to the regulator or the fuel pump. I had replaced the fuel guage portion of the pump about one year ago. Wish I had just replaced the pump now... Oh well. Good luck!

Shawn
Priceville, AL (no snow here thank goodness)
silver_SE is offline   Reply With Quote
Old 01-28-2009, 12:57 PM   #15
Member
Posts like a V-Tak
 
Join Date: Dec 2004
Location: Alabama
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
silver_SE is on a distinguished road
Default

Autozone fuel pump $272 (1yr warranty)
Dealer part $568
GMPartsDirect $295 + */h
Advance Auto Bosch fuel pump $355 (limited lifetime warranty)

My buddy was told by his mechanic that GM fuel pumps (at least these) don't like ethanol. So, if I have to replace the fuel pump, I'm probably gonna buy the Bosch item.

Good Luck.
silver_SE is offline   Reply With Quote
Old 01-28-2009, 01:32 PM   #16
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Check the prices at Auto Parts Fast at RockAuto
Danthurs is offline   Reply With Quote
Old 01-28-2009, 11:41 PM   #17
Member
Posts like a V-Tak
 
Join Date: Dec 2004
Location: Alabama
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
silver_SE is on a distinguished road
Default

Update as of tonight.

I installed a new fuel pressure regulator. Before I took the old one out, I took some readings. I was getting around 46psi for ignition on. I could hear the fuel pump spin up and then turn off (normal). When I start the car, I would get around 52psi. The weird thing was, if I did the ignition on and got the 46psi, if i continued to monitor the pressure after i turned the ignition off it would creep up to 50psi?

Anyway, installed a new regualtor. BTW the brand of regulator sold at Autozone ( Gp-Sorensen #800-302) does not fit a 2002 bonneville. I even check the vendor'* catalog online. Autozone looked it up correctly, it just won't fit. I got a regulator at Advanced Auto that did fit (i think it was a BWD).

So, after install, i took some more readings. I was getting lower pressures at ignition on (around 35psi?). Alldatadiy says that it may take a few cycles to get to the max pressure. I'll check it again tomorrow. The pressure reading while running is very different than what i saw with the old regulator. The pressure oscillates from 48-52psi. So, I'm hoping that the old regulator wasn't working properly. I'll let you know.

I did get a surging with the old regulator. During this surging, I listened to the fuel pump and it would also oscillate (the pump whine sound would vary in pitch). So, either the regulator was causing the pump to change speed to compensate or the pump is truly going out. But,the pump never did stop running.

I'll post more later.
silver_SE is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Crank Position Sensor 93 SSE 4 ME 1987-1991 8 08-29-2006 12:46 PM
Crank Position Sensor zr1 nsx ssei 2000-2005 2 08-07-2006 12:15 PM
HELP Changing Crank Position Sensor FieroGT42 1987-1991 12 11-12-2005 11:25 AM
Location of Crank Position Sensor MattG554 1987-1991 12 08-02-2005 03:12 AM
Crank Position Sensor and Balancer Removal BPella 2000-2005 2 07-10-2004 10:47 PM


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 07:50 AM.


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.