engine hesitates
Senior User
Joined: Jul 2006
Posts: 177
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I had the same problem with my t-bird, i already had installed new plugs but not the wires and sure enough the wires were causing hesitation install good wires and ull be fine, also u might wanna lube your throttle cable could be getting stuck
Freshman User
Joined: Apr 2006
Posts: 28
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From: Tulsa, OK
its just a gas treatment you can get at probably any auto parts store. it comes in a red can and is about 2 bucks.
http://www.berrymanproducts.com/Default.aspx?tabid=140
http://www.berrymanproducts.com/Default.aspx?tabid=140
Last edited by 89straightsix; Aug 15, 2007 at 11:41 PM.
Senior User
Joined: Oct 2004
Posts: 289
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Have you checked the ignition timing to make sure it is not retarded? I like to run with the timing advanced a couple of degrees ahead of factory specs for fuel economy and good throttle response. If your engine has a vacuum advance on the distributor I would check it out also. You can hook manifold vacuum directly to it to test it.
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Freshman User
Joined: Jan 2007
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It's fuel injected.
Doesn't the computer time the engine?
I tried moving the timing but it made no difference.
Any other ideas?
Doesn't the computer time the engine?
I tried moving the timing but it made no difference.
Any other ideas?
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Joe Kucinski
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Joined: Jul 2006
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People have had problems with stumbling, hesitation, etc due to the EGR valves on the EFI engines. You may want to investigate creating a "restrictor plate" for it to better control the amount of flow it meters. This has been known to make a vast difference in the EFI's driveability. Do a search on the forums for "EGR restrictor plate".
Good luck, keep us posted.
Good luck, keep us posted.
Elder User
Joined: Feb 2002
Posts: 504
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From: Saddle Brook United State
Take a look at the Idle air control valve on the top of the throttle body, make sure it is working and isn't all gummed up or stuck open and the change the throttle body gasket (tech bulletin on that one). EFI timing is controled by the computer, all you can do is set the initial (base) timing--normal is 10 degrees advanced.
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Freshman User
Joined: Jan 2007
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I did change the throttle body gasket.The old one did have a vacum leak because it was all twisted for some reason.I changed it because I replaced the stock throttle body with a larger 5 litre one.Which by the way to all you nay sayers it does definately give you better performance.Even with the hesitation I noticed the difference.
However I used the same idle control from the original throttle body.
I will check that out tomorrow and let you know how it worked out.
Thanks for the help.
However I used the same idle control from the original throttle body.
I will check that out tomorrow and let you know how it worked out.
Thanks for the help.
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