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Rocker adjustment....

Reply #45 –
The TPS is set to high. Bring it down to .60 MAX
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

Rocker adjustment....

Reply #46 –
.60? Really? I've never heard that before. Why so low on the TPS?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #47 –
Anywhere between .6 and 1.1v is within parameters.  The setting it to .999999 stuff is .  The TPS triggers WOT mode at the base voltage PLUS 2.71v.  Every startup  the PCM takes note of the TPS voltage with the throttle closed.  Every time.  Why?  Because it WILL change slightly from one startup to the next. 

I shoot for .85v myself.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Rocker adjustment....

Reply #48 –
I will readjust mine then. As far as the rest, on the way to work the car died about 4 times when coming to a stop. Also died a couple of times right after I started it. Maybe the timing is toom high? I may need to drop it to 16 degrees and go from there. The idle was at 900 yesterday evening when I did the base idle rest, but, I didn't drive it afterward. Gotta say, I'm sick and bloody tired of trying to iron this  out.....but I shall keep at it until it is as good as it can get until I can one day afford to have a dyno tune. Funds are back to zero.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #49 –
TPS is fine. These things aren't "adjustable". The EEC will learn where it's at, as long as it is not severely out of range - I believe it will throw a code it that is the case.

As long as it's in range, and its voltage goes up/down smoothly as you move the throttle, the TPS is good and working.

Not sure what Tom is going on about with 0.60V.
1988 Thunderbird Sport

Rocker adjustment....

Reply #50 –
I have never run mine over 14 degrees of timing with the spout connector out. The EEC will bring more timing in as need from there.  38-40 psig of fuel pressure with the vacuum disconnected is the standard.  The gap you have on your plugs is typical for these cars.

If you changed cams did you degree it when you installed it?

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Rocker adjustment....

Reply #51 –
Always use the lowest possible setting because THE ECM uses 2,71 plus Base for WOT. Increasing the number allows it to be to HIGH. Been there done it. Trust me So @ .6 + 2.7i you get WOT @ 3.31  If you set for 1,0 you get WOT@ 3.71 Big difference my friend. That is why the Midnighter eats those 302 guys for lunch. have a great evening guys
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

Rocker adjustment....

Reply #52 –
I dropped the TPS to .90. I was about to raise the fuel pressure to .40, and it was already there. I'm questioning my fuel pump, and a POSSIBLE vacuum leak. Got some carb cleaner to spray as a leak finder. Just not tonight. Car still has a HARD time staying on when I come to a stop or almost a stop. Idle is now 800. Not the 900 I did yesterday. Maybe I need to start the idle reset again this week. Yesterday, at idle, in the driveway (I hadn't driven) it was doing pretty sweet. Now, holy . I will run codes again when I get the time. Working for a living SUCKS.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #53 –
Quote from: vinnietbird;439820
I dropped the TPS to .90. I was about to raise the fuel pressure to .40, and it was already there. I'm questioning my fuel pump, and a POSSIBLE vacuum leak. Got some carb cleaner to spray as a leak finder. Just not tonight. Car still has a HARD time staying on when I come to a stop or almost a stop. Idle is now 800. Not the 900 I did yesterday. Maybe I need to start the idle reset again this week. Yesterday, at idle, in the driveway (I hadn't driven) it was doing pretty sweet. Now, holy . I will run codes again when I get the time. Working for a living SUCKS.

There are two possibilities for the idle surge:

1. Vacuum leak, most likely. Check everything. If you can't find an external vacuum leak it is possible that the lower part of the intake gasket is not sealing well and there is an air leak between the intake ports and the lifter valley. What intake gasket did you use and did it line up with the heads ok?

2. Your cam is beyond what the EEC can compensate for. I know people have issues running a E303 or Trick Flow stage 1 cam without an EEC tune. The cam I'm running is mild enough that the EEC can compensate and it drives like a stock cam (albeit with more top end pull) without a tune. I doubt you specifically need a tune but it is possible.

If you had 36psi fuel pressure with the vacuum line off yesterday and 40psi today with no other changes then you could have a fuel pump issue. If it's possible I would tape a fuel pressure gauge to the window and drive the car around to see what the fuel pressure is under different conditions. How old is the pump you are running, what lph is it, and what brand? Anything over 155lph is going to be just fine.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Rocker adjustment....

Reply #54 –
The fuel pump is a few months old. Doesn't mean it can't be going bad though. I was thinking about that. I also agree with the possible vacuum leak. Not sure how to diagnose that other than from the outside. As far as the cam being too big, I hope not. When Ed made it, he knew my complete information from computer, MAF size, ....everything. I can't get the gauge to the window. I will check the pressure again in the morning and after work. It may be the cause of my slight surging as well. I will YANK that lower intake to swap gaskets if I have to. It has felPro gaskets. They lined up well.

Also, I did go from 12 to 18 degrees. maybe I need to drop it down a wee bit and try that as well. Maybe too much timing. Because it did stay running prior to the timing bump and rocker adjusting.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #55 –
I know I can move the timing on my car from 14* to 18* base with virtually no change in idle speed. What brand is your fuel pump? It's not a cheap eBay no name pump is it?
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Rocker adjustment....

Reply #56 –
The pump is a Walbro 255 lph unit I bought new. I will say, the hole on the bottom was smaller than my other pump, but, as I stated....it could still be going bad. I may get another pump and see if there's any difference at all. I have my old pump that is a no name brand, but, it may help rule out an issue. And since I have the panel in the trunk, it's a ten minute job.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #57 –
Vin, I remember you posting a thread concerning harness differences....

http://www.foxtbirdcougarforums.com/showthread.php?37353-O2-sensor-harness&highlight=02+harness

What ECU do you have?
What ECU harness?
What O2 Harness?

Please provide the years on the harnesses as well.  Also; if you've run codes recently, what were/are they if any?  The stock CougarBird 86-88 SD harness is pretty unique in that the oil level sender is not inclusive in it.  I'm trying to figure out if the way they ground are different as well.  I know there is a difference between the Mustang auto vs 5 speed, but the CougarBird harness might be different in that regard as well.  There are differences with regard to the years as well WRT Mustang processors/O2 harnesses.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Rocker adjustment....

Reply #58 –
The Harness is from my car, 1988 Sport. Mass Air upgrade, A9P computer. O2 harness and the rest is also from the Sport. None of this started until the heads and cam were swapped.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Rocker adjustment....

Reply #59 –
Do you have the VSS wires connected to the VSS on your ECC harness? I believe they are pins 3 & 6.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp