Topics

1

General Buick Tech / factory tach/boost unit

« on: September 27 2019, 11:33:05 PM »

Hi all


My factory tach has gone haywired... and probably needs to get re calibrated.


question... if the factory tach is bad, does that also impact the factory boost gauge.  I am trying to figure out if the factory boost gauge is still working properly or not... or I may have a vacuum leak somewhere.  With just a light throttle, 2 or 3 bars light up on the boost gauge... but nothing moves on the aftermarket gauge.


I remember with a vacuum leak, the factory boost gauge would light up pretty quick with any sort of throttle response... but I can't remember if the needle also moved on the aftermarket boost gauge.




thanks... dave

2

Canada / anybody in the GTA/Ontario with a GN rad to sell

« on: July 19 2019, 09:40:47 PM »

Hi All


I am asking for a friend... does anyone in the GTA or southern Ontario with a GN rad for sale


let me know... dave

3

General Buick Tech / starter does not turn over

« on: October 10 2018, 10:26:56 PM »

hi all


Battery died a week ago... so I took it out to charge.  anyways, I put it back in the car tonite and no start.  The starter does not turn over.  I even tried to jumping the battery with my truck but nothing.


I don't have manuals.  Is there a starter fuse or main fuse?  Is there anything that would cause the start turn over or start.  I never had any problems with the starter. I've been driving the car all summer.  I don't know if I might have done something when I pulled & put the battery back in the car


I did one more experiment since its dark out.  I turned on the car lights on, and tried to start the car.  The headlights dims very very slightly.  Don't know if there some power going to the start.


any other suggestions or recommendation ... before I start crawling under my car this weekend


thanks in advance.

4

General Auto Tech / water based fog machine - can I use to troubleshoot vacuum leaks

« on: October 29 2013, 11:14:22 PM »

Hi all

Can I use and is it safe to use a water base fog machine to troubleshoot vacuum leaks?

There's a "halloween" fog machine on sale at Walmart.

dave

5

General Buick Tech / issues setting IAC & TPS?

« on: August 20 2013, 09:52:09 PM »

Hi all

I've been trying to set my TPS & IAC since Saturday... using Steve's instructions.

I set the TPS, key on... engine off to .42, once I start the engine... it immediately jumps to .46.  whatever I set it at, it always jumps 4 point.  Is jumping 4 point normal?

As for the IAC, I set it to 20 with engine on in park...  I take it for a quick drive, come back and the IAC shows 0.  It stays at 0... no matter how much I turn the idle screw.... but in the mean time, TPS gets all wacky... and I have to reset everything again.  Should IAC go to 0, after I've set it to 20?

Could the be something wrong or worn with the IAC or TPS?


TIA.... dave


PS: I finally figured my off-idle stumble.  I changed my cam sensor

6

General Buick Tech / fuel pressure spike off idle

« on: May 06 2013, 05:10:03 PM »

Hi all
 
I am trying to figure out why I have a stumble/hesitation when I move from a stop position.  I finally got a fuel pressure gauge... and I notice that my fuel pressure spikes from 35PSI to 40 PSI as soons as I press the gas... and then it goes back to 35PSI.  it stays at a constant 35PSI... when I am cruising. 
 
It appears that I am flooding the engine for a second or two...and it causes that stumble/hesitation.
 
 
Does anyone know why I am getting this fuel pressure spike?  What can I do to fix.
 
 
I checked  and my fuel pressure 43PSI  with vacuum off.  I have an early turbotweak chip... and I don't think it is adjustable.  It's also the 2nd fuel pump that I have in the car.
 
 
any help is greatly appreciated.
 
dave