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Topic: Shuddering engine...UPDATE July,1 (Read 14865 times) previous topic - next topic

Shuddering engine...UPDATE July,1

Reply #75 –
Coil? I know its not even remotly close to the same car but my buddy had a 97 cobra that had a studder traced it down to being a coil pack. maybe?

Shuddering engine...UPDATE July,1

Reply #76 –
What does it mean that the wires look good? Visually, or with your ohm meter?  And make sure that 7 and 8 are an inch apart. (That last bit came from the field service engineer running the advanced driveability class I'm in this week)

Shuddering engine...UPDATE July,1

Reply #77 –
I have a brand new coil.

I think I may have it figured out.....stay tuned.
'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..

Shuddering engine...UPDATE July,1

Reply #78 –
Quote from: vinnietbird;392735
New problem. I don't know how to check the codes. My car isn't equipped with the small plug with the single wire. Only the larger plug.


look around it might be tucked under something,  is that your original harness?
[SIGPIC][/SIGPIC]

Shuddering engine...UPDATE July,1

Reply #79 –
Yes, original harness. No small plug anywhere. I can't even find a broken wire where it MIGHT have been.
'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..

Shuddering engine...UPDATE July,1

Reply #80 –
Quote from: TheFoeYouKnow;392738
What does it mean that the wires look good? Visually, or with your ohm meter?  And make sure that 7 and 8 are an inch apart. (That last bit came from the field service engineer running the advanced driveability class I'm in this week)

The wires looked good in appearance from end to end..... Upon further inspection, when twisted, one has a slice in the boot at the plug. Swapping wires. Stand by for an update.
'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..

Shuddering engine...UPDATE July,1

Reply #81 –
Quote from: TheFoeYouKnow;392681
It's probably easier to swap the wires, than to pull the plugs, vinnie.  Start easy, work up to the hard stuff like plug pulling, especially with P heads.  Save yourself some frustration.

 
+1

Shuddering engine...UPDATE July,1

Reply #82 –
Did you read post 63?
STI is a R/BK wire
If the STI is in the large connector you may have to back it out of the connector to hook it to your code reader.

Shuddering engine...UPDATE July,1

Reply #83 –
I'll check that shortly. New wires installed, no change.
'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..

Shuddering engine...UPDATE July,1

Reply #84 –
O.K !!! Got the codes......at least I think I did....the numbers (beeps) went as follows...

9, 5, 9, 5, 1, 9, 5, 9, 5

According to the book I have, 95 is the fuel pump secondary circuit open.....What the "bleep" is that?
'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..

Shuddering engine...UPDATE July,1

Reply #85 –
I think the "1' in the middle is the separator code.
'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..

Shuddering engine...UPDATE July,1

Reply #86 –
Quote from: vinnietbird;392763
I think the "1' in the middle is the separator code.
Correct. It seperates the on demand codes from the memory codes.

What I think you have, and someone will correct me if I am wrong, is you have upgraded to mass air and the stock 87 cable harness does not have the fuel pump monitor wire to EEC pin 8.
Since the pump runs you can ignore the code.

Now run the KOER test. When it finishes outputting codes, momentarily go to WOT and it should start running the cylinder balance tests.

Shuddering engine...UPDATE July,1

Reply #87 –
Give me a little more details on this "KOER" test please, and the cylinder balance test.
'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..

Shuddering engine...UPDATE July,1

Reply #88 –
oh yes, and my car is an '88, not an '87.
'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..

Shuddering engine...UPDATE July,1

Reply #89 –
Tomorrow, after work, I'll do the KOER test. I think I can do that. It has the instructions in the book. I'll update tomorrow after work.    !!!!!!!!!!!!!!!!!!!!
'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..