Disconnected BCS...Slight Increase in Boost....Now what?

Topic: Disconnected BCS...Slight Increase in Boost....Now what? (Read 11123 times) previous topic - next topic

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #30 – June 18, 2007, 08:06:47 PM

Quote from: DMC24guy;155304

That doesn't mean the EGR is clogged. I replaced the Lower Part of the Valve a couple months back, and when I did, I made sure to clean the heck out of it.

I see you dont want help. I mean im sitting here TELLING you whats wrong it may not be the valve itself it may be the tube ETC but the idle should change when you manually open it.At very least the inop EGR system is knocking 2-3mpg off if it isnt your cruise RPM detonation (when the EGR works) the computer adds timing/pulls fuel to compensate for the diluted a/f mixture wich you have a LACK of.

Good luck.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #31 – June 18, 2007, 08:43:55 PM

Stop arguing AND put the freaking premium in it...Don't think I ever put anything else in any of the 14 I've had... The autos should make 8-9 psi...

Also weak fuel pump comes to mind, especially when it starts to loose RPMs/bog while building boost... Fuel pressure should be verified under boost to be sure...

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #32 – June 18, 2007, 10:48:34 PM

I put in 91...seemed to help. Car ran better, and didn't hear any pinging. My next planned Modifications to the car were going to be one of those high pressure Walbro Fuel pumps and a Gillis Boost Control Valve.

QUESTION:

Does the Pipe running from the EGR valve to Exhaust Manifold clog easily?

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #33 – June 18, 2007, 10:50:34 PM

real question: is it that hard to pull off? :hick:

seriously if it aint too bad then yank it and check it out. cant know for sure without actually looking at it.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #34 – June 18, 2007, 10:54:34 PM

I'll be doing that soon. What I want to know is if that metal tube that runs from the EGR to the Exhaust Manifold clogs easily, and if so, how does one clean it?

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #35 – June 18, 2007, 10:57:12 PM

Quote from: DMC24guy;155366

I'll be doing that soon. What I want to know is if that metal tube that runs from the EGR to the Exhaust Manifold clogs easily, and if so, how does one clean it?

Not unless the car is running PIG rich for a LONG time. The port in the intake is more likely to clog than the tube itself.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #36 – June 18, 2007, 11:38:09 PM

it! I don't know what to do anymore. From everything I've gathered, it appears as if I need to make the following Modifications to the car:

1) New High Pressure Fuel Pump (Possibly to solve Power Loss Problem)
2) New Catalytic Converter (Current one rattles and could be plugged, also allowing for power loss)
3) New EGR Valve
4) 2...perhaps 3 cans of SeaFoam to the Engine.
5) New Turbo unit due to possible Turbine play/ hitting the Housing.

I'm scared.....

(Almost every time after I've gotten gas for the car, there will be a strong odor of Gasoline inside the Cabin...it usually wears off after about a minute or so of driving. Never knew would could be causing that.)

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #37 – June 19, 2007, 07:37:25 AM

well yes the cat could be plugged, but the rattling is just the heat sheild. cut/yank/whatever that sucker off if it bothers you. you can remove the pipe with the cat in it yourself, and bring it to a shop, and they can tell you whether or not its plugged.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #38 – June 19, 2007, 12:16:45 PM

Time to buy a new car...

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #39 – June 19, 2007, 12:28:11 PM

I don't know if you meant to sound serious or sarcastic in your reply, but in all honesty, I should have expected these problems...considering the car had 230k miles on it when I purchased it.

Although looking back at the past 5 months, I've had no real "Mechanical" problems to speak of. The car hasn't died on me (yet), a feat which none of my other 3 T-bird's could lay claim to. And I've had this car just about as long as the other 3.

With that said, the "Pattern" which I've fallen into over the past two years is that I tend to keep these cars for no more than 6 months and then end up selling them for reasons unknown until usually about 1 month before the sell occurs.

So, with those calculations, I shouldn't have this car for much longer. Maybe a month more at the most. And what do you know? All my reasons for selling it have already popped up.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #40 – June 19, 2007, 12:44:09 PM

I had the same problem with my TC. I changed the plugs and the problem went away. The old plugs looked good but they weren't gapped properly. I think they were set to 042-045. I couldn't read the correct range on the fan shroud but the last number was 036. I set the new ones to 035.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #41 – June 19, 2007, 05:31:26 PM

TC plugs gap .032-.036...

Under boost, the stock ignition system is marginal at the larger gaps...

Update! 6/29

Reply #42 – June 29, 2007, 11:11:04 PM

Well, I installed a new Walbro 190LPH Fuel Pump today. The lack of boost still exists. Gauge reads out to about 6psi but it just won't go any higher. I didn't feel any hesitation this time around, it's just like the Turbo Reached it's limit or something.

I checked the hoses connected to it and the Intercooler and non had cracks or splits.

So now I'm thinking.....

Replace the Turbo or the Cat.... Probably the Cat first...seeing as there is somewhat of a price difference between the two items.

A few More Misc Notes worth Mentioning:
Took off the EGR and it was clean. Took off the IAC and it too was clean. No carbon. I did however hook up a Voltmeter to the IAC Solenoid to check the Ohm reading. According to the read out, I was only getting 1ohm....???

Reset the Idle and adjusted the TPS to .91v, no dead spots were detected during test. Drove around and weird surging idle problem still existed.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #43 – June 30, 2007, 09:24:00 AM

Here's a little trick. Lower the downpipe from the turbine elbow and go for a spin. If boost returns you have a block in your exhaust flow.

Disconnected BCS...Slight Increase in Boost....Now what?

Reply #44 – June 30, 2007, 09:40:10 AM

Do as ether947said and drop the down pipe. The cat on my T/c was plugged up so bad that it wouldn't make any boost. So give it a try.
I took me 3mos to figure it out. I was how could it be the exhaust it is only one year old. It was plugged any way. I dropped the down pipe and everything was back to normal.