post #1 of Old 07-21-2012, 11:55 PM Thread Starter
torchd
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1998 ZJ 
 
Join Date: Jan 2010
Location: Chicago
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Installed My Header, WJ Intake and "703" Injectors...

But now my cruise control for some odd reason will not work. I put it all back together the same way that the TB cables came off.

And now I found out that only my air will blow out the defrost only.


But now that I did my intake, header and injectors, the Jeep feels totally different. Idle is soooo much smoother, I can now accelerate on the hwy with out having to down shift. Off the line the Jeep is a lot peppier. The Jeep really feels good right at the 2K RPM mark.


Now I cannot wait to re-do my entire exhaust. Gonna be 2.5" from the header collector all the way out back.. Going with a MagnaFlow metallic spun cat, as for a muffler still havent figured one out just yet.


1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
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post #2 of Old 07-22-2012, 07:48 AM
stormer1092
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1994 ZJ 
 
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Location: Ishpeming
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check your vaccum lines for the cruise control problem.
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post #3 of Old 07-22-2012, 08:02 AM Thread Starter
torchd
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Quote:
Originally Posted by stormer1092 View Post
check your vaccum lines for the cruise control problem.
Yeah I checked all the vacuum lines yesterday, everything looks in tact. Which vacuum lines does the cruise control use?

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
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post #4 of Old 07-22-2012, 08:04 AM
ZeeJay1997
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post #5 of Old 07-22-2012, 08:10 AM Thread Starter
torchd
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Quote:
Originally Posted by ZeeJay1997 View Post
Do your blower vents work okay?
You know what, haven't tried them. Let me go outside and check. BRB....

No they don't work. Everyhting is going out through the top like it is on defrost.. Great, now what?

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
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post #6 of Old 07-22-2012, 08:33 AM
kachink
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Location: Lake Forest
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Everything blowing out the defrost is the classic symptom of a vacuum leak.
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post #7 of Old 07-22-2012, 08:40 AM
stormer1092
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Quote:
Originally Posted by kachink View Post
Everything blowing out the defrost is the classic symptom of a vacuum leak.
x2
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post #8 of Old 07-22-2012, 08:49 AM Thread Starter
torchd
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Quote:
Originally Posted by kachink View Post
Everything blowing out the defrost is the classic symptom of a vacuum leak.
But where? All my lines look to be in good shape.. I will go and take some pics

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
torchd is offline  
post #9 of Old 07-22-2012, 08:54 AM
SKorch630
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1997 ZJ 
 
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Location: 60134
Posts: 363
Tennis ball check. I've got a write up for it around here somewhere. Perfect little tool for a vacuum leak
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post #10 of Old 07-22-2012, 08:58 AM Thread Starter
torchd
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Location: Chicago
Posts: 2,593
First Pic - Vacuum line for cruise control



Second Pic - Vacuum line for HVAC



Third Pic - Same vaccum line for HVAC where I had to re-locate it on the side of the intake

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
torchd is offline  
post #11 of Old 07-22-2012, 09:58 AM
ZeeJay1997
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Is the check valve installed backwards?... by the brake booster?
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post #12 of Old 07-22-2012, 10:03 AM Thread Starter
torchd
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1998 ZJ 
 
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Location: Chicago
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Quote:
Originally Posted by ZeeJay1997 View Post
Is the check valve installed backwards?... by the brake booster?
I'm not sure.. I can take it off and re-install it the other way.. I did have it off completely do lengthen it..


On a side note..

Well I took my battery and battery try out, traced the vaccum line that goes to the black vacuum box and everything was fine there.

I connected everything back up, grabbed my break cleaner and started spraying the vacuum lines with no changes in the idle of the motor.


Where is my vaccum leak? Maybe an intake leak? My jeep idles perfectly though so I am confused

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
torchd is offline  
post #13 of Old 07-22-2012, 10:07 AM
ZeeJay1997
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If the check valve is backwards, the vacuum is blocked.
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post #14 of Old 07-22-2012, 10:09 AM Thread Starter
torchd
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1998 ZJ 
 
Join Date: Jan 2010
Location: Chicago
Posts: 2,593
I flipped the check valve around and nothing changed. I left it after I flipped it..

1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
torchd is offline  
post #15 of Old 07-22-2012, 10:13 AM
ZeeJay1997
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1997 ZJ 
 
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Posts: 8,550
Why is the vac line running behind the behind at the heater hose on the firewall. it looks mashed. nevermind, thats a piece of foam or rubber
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