1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

My car won't run right. Please help me.

Thread Tools
 
Search this Thread
 
Old Dec 26, 2008 | 11:15 PM
  #1  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
My car won't run right. Please help me.

[13B]

Well I took EVERYTHING off AGAIN, and put it all back together AGAIN relating to the intake manifold and the car still will not run right. I'm getting so depressed because of it.

It starts up easily enough, but as soon as it comes on, it goes to 5500rpm and stays there with no indication of it settling down. What could cause this?!?!

There is still a decent amount of sea-foam in it, because it is still smoking really bad. Could this cause a high idle like that? I did absolutely nothing to the upper intake when I took it off, so every adjustment should be exactly the same as it was before I began. The car ran PERFECT before I took the intake off to clean the aux ports

I'm 95% sure that all of the electrical and vacuum connections are hooked up correctly and everything is bolted down tight and snug.

This is killing me because the car is over at somebody else's house because I didn't have a garage to work in and somebody has already scratched the car and broken my antenna off.

I need help.
Reply
Old Dec 27, 2008 | 12:01 AM
  #2  
speedracer_not's Avatar
Senior Member
 
Joined: Dec 2004
Posts: 506
Likes: 2
From: alabamer
stuck open throttle?
Reply
Old Dec 27, 2008 | 06:43 AM
  #3  
74RX4's Avatar
Round and Round
Tenured Member 15 Years
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,516
Likes: 3
From: SW Florida
^Seems too high to be just a vacuum leak. Check the linkages on front and back. Make sure the OMP rod is free. Make sure the dashpot bracket did not get bent and that the dashpot is working properly. Check the cables too. Make sure nothing is jammed and the cables have a tiny bit of slack.
You can disconnect the air funnel at the throttle body and look at the top throttle plate. There should be a very tiny gap between the plate and the throat of the TB at idle. If the gap is more than paper thickness something is holding it open too far.
Reply
Old Dec 27, 2008 | 09:52 AM
  #4  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
Originally Posted by 74RX4
^Seems too high to be just a vacuum leak. Check the linkages on front and back. Make sure the OMP rod is free. Make sure the dashpot bracket did not get bent and that the dashpot is working properly. Check the cables too. Make sure nothing is jammed and the cables have a tiny bit of slack.
You can disconnect the air funnel at the throttle body and look at the top throttle plate. There should be a very tiny gap between the plate and the throat of the TB at idle. If the gap is more than paper thickness something is holding it open too far.
Excuse my ignorance, but what is the dashpot?
Reply
Old Dec 27, 2008 | 10:19 AM
  #5  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
I was just reading through some other threads and I think I know what I've done wrong. I was attempting to undue the cruise control cable and I believe I was unscrewing that nut that adjusts the cable, which would keep the throttle plates open. I'm hoping that's the problem.
Reply
Old Dec 27, 2008 | 11:01 AM
  #6  
RXnos1200's Avatar
1200 gone......but......
Tenured Member 05 Years
iTrader: (24)
 
Joined: Oct 2006
Posts: 902
Likes: 0
From: so cal
that's the first place to start. undo the throttle and cc cables then start the car.
Reply
Old Dec 27, 2008 | 11:05 AM
  #7  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
Originally Posted by RXnos1200
that's the first place to start. undo the throttle and cc cables then start the car.
How do I undue the CC cable? I couldn't figure out how
Reply
Old Dec 27, 2008 | 11:16 AM
  #8  
RXnos1200's Avatar
1200 gone......but......
Tenured Member 05 Years
iTrader: (24)
 
Joined: Oct 2006
Posts: 902
Likes: 0
From: so cal
looking from the driver's side into the engine bay; you can see the throttle cable bracket with 2 12 mm nuts. just loosen the one closest to you and pull the cable out of the bracket and let it float there. that should give it enough slack. go to the other side of the engine bay and do the same for the cc cable.
Reply
Old Dec 27, 2008 | 12:31 PM
  #9  
74RX4's Avatar
Round and Round
Tenured Member 15 Years
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,516
Likes: 3
From: SW Florida
Originally Posted by Starfox07
Excuse my ignorance, but what is the dashpot?
Right here\/
Reply
Old Dec 27, 2008 | 12:51 PM
  #10  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
Went to test some things, heres what happened.

Took off both throttle and c/c cables, and it dropped the idle to 3,000rpm. Then I messed around with some of the linkages, and got it to drop more. But under 3,000rpm it runs like complete ****. Makes very strange noises, like chirping, then cuts out.

Took off the radiator cap and the coolant is sort of milky caramel color. Oil dipstick looks fine. Still smoking the exhaust, but now it sort of smells like coolant.

Do I have a blown motor? How the **** could this have happened by just removing and putting the intake manifold back on? I didn't drop anything into the ports. Can these motors hydrolock? Maybe there was too much sea foam in there. Either way, I thought an apex seal would go long before a coolant seal.

It infuriates me because the car ran perfect before I tried to fix the aux ports.


I can't afford a new engine.


edit: I also took the air funnel off, and the lower two (outer) plates were wide open. Would that matter at idle?

Last edited by Starfox07; Dec 27, 2008 at 12:54 PM.
Reply
Old Dec 27, 2008 | 01:32 PM
  #11  
RXnos1200's Avatar
1200 gone......but......
Tenured Member 05 Years
iTrader: (24)
 
Joined: Oct 2006
Posts: 902
Likes: 0
From: so cal
sounds like you have a big vaccum leak.
Reply
Old Dec 27, 2008 | 05:06 PM
  #12  
Starfox07's Avatar
Thread Starter
Environmentally-Hostile
Tenured Member 15 Years
 
Joined: Sep 2005
Posts: 1,662
Likes: 3
From: Ennis/Arlington Texas
bump?
Reply
Old Dec 27, 2008 | 06:17 PM
  #13  
scott_06's Avatar
Full Member
 
Joined: Jan 2008
Posts: 99
Likes: 0
From: Beavercreek Ohio
Dumb question, but did you replaced all gaskets wit new ones? Like the intake manifold gasket? Did they set right? You could spray water around the intake manifold, and if the motor bogs down you found a leak. Also, did you mess wit any idle or air/fule mixture screws? The idle screw is on top of the manifold and theres the mixture screw where the stock are box is on the passanger side, (dont mess with if if you have not tuched it.) May be the idel screw needs adjusted if theres no vacume leaks or gasket problems.
Reply
Old Dec 27, 2008 | 08:32 PM
  #14  
blackdeath647's Avatar
weak minds wear the crown
Tenured Member 10 Years
iTrader: (2)
 
Joined: Oct 2006
Posts: 2,105
Likes: 1
From: Hudson, NC
^^ don't spray water on there please. use carb cleaner or wd-40.
Reply
Old Dec 27, 2008 | 10:33 PM
  #15  
74RX4's Avatar
Round and Round
Tenured Member 15 Years
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,516
Likes: 3
From: SW Florida
Originally Posted by Starfox07

edit: I also took the air funnel off, and the lower two (outer) plates were wide open. Would that matter at idle?
Yes it would. They should look like those in the picture I posted earlier in the thread. They should be completely closed. Only the top one should be slightly open at rest or idle. You have something messed up in your linkage. I'll take a look at the TB's I have tomorrow and see if I can figure what you may have done.

I don't think your motor is blown. To test for bad coolant seals remove the cap from the overflow bottle. Hold the cap so the end of the tube is under the water. Start the engine and watch for constant stream of bubbles from the tube. Hopefully you will find none. If you get a constant stream the coolant seals are beginning to go.
Reply
Old Dec 28, 2008 | 12:29 PM
  #16  
RXnos1200's Avatar
1200 gone......but......
Tenured Member 05 Years
iTrader: (24)
 
Joined: Oct 2006
Posts: 902
Likes: 0
From: so cal
"Yes it would. They should look like those in the picture I posted earlier in the thread. They should be completely closed."

The 2 on the bottom looks wide open to me. At least the 2 butterflies look open.

Going to look in the garage to see if I can find my other SE TB.

Now I'm curious.


Found my TB and the 2 bottom butterflies are open like the pic, but the top flap and the 2 bottom flaps behind the butterflies are closed.

Last edited by RXnos1200; Dec 28, 2008 at 12:54 PM.
Reply
Old Dec 28, 2008 | 03:08 PM
  #17  
74RX4's Avatar
Round and Round
Tenured Member 15 Years
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,516
Likes: 3
From: SW Florida
The ones in the front (Secondary double throttle plates) are wide open, but the ones behind them (Main secondary throttle plates) are closed. The main secondary plates are connected to the primary thottle plate by the linkage. The double throttle plates are normally open unless the engine is cold. Then they close and do not allow full power until the car warms up. I should have supplied more details in my post. Sorry.
Reply
Old Dec 28, 2008 | 03:11 PM
  #18  
74RX4's Avatar
Round and Round
Tenured Member 15 Years
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,516
Likes: 3
From: SW Florida
I should add that the front plates are not connected to the linkage, but are controlled by vacuum.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
alphawolff
1st Generation Specific (1979-1985)
17
Nov 17, 2015 05:57 PM
highspeedrider
Introduce yourself
6
Aug 19, 2015 03:44 AM




All times are GMT -5. The time now is 02:46 PM.