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Old 07-23-2005, 18:01   #1 (permalink)
toytrd89
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89 mustang hesitation

I have a 89 GT with a 93 cobra motor which was recently rebuilt to a 308
with forged internals. The heads were redone with 202 in. and 195 ex. It
has a 70mm throttle body and egr spacer, gt 40 intake, 24lb injectors, nos
fogger system"not used at the moment", msd billet dist, 6AL, and HVC
blaster coil. When I am at a cruising speed and the engine RPM's are about
2200 it sounds like its missing, but everything in the Ignition system is
new, and I have around 42lbs of fuel pressure. Whats up? Does anybody have
some insight.

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Old 07-24-2005, 18:01   #2 (permalink)
Rod
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Re: 89 mustang hesitation

Could be the start of your fuel pump going bad. If it happens at low fuel
levels then that would also point to the pump.

Cheers, Rod
"toytrd89" <tacomatrdbkk@yahoo.com> wrote in message
news:d5fcd6f87a0f5e63d78f0ff237a8c45c@localhost.talkaboutautos.com...
> I have a 89 GT with a 93 cobra motor which was recently rebuilt to a 308
> with forged internals. The heads were redone with 202 in. and 195 ex. It
> has a 70mm throttle body and egr spacer, gt 40 intake, 24lb injectors, nos
> fogger system"not used at the moment", msd billet dist, 6AL, and HVC
> blaster coil. When I am at a cruising speed and the engine RPM's are about
> 2200 it sounds like its missing, but everything in the Ignition system is
> new, and I have around 42lbs of fuel pressure. Whats up? Does anybody have
> some insight.
>



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Old 07-24-2005, 20:01   #3 (permalink)
Backyard Mechanic
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Re: 89 mustang hesitation

"toytrd89" <tacomatrdbkk@yahoo.com> wrote in
news:d5fcd6f87a0f5e63d78f0ff237a8c45c@localhost.talkaboutautos.com:

> I have a 89 GT with a 93 cobra motor which was recently rebuilt to a
> 308 with forged internals. The heads were redone with 202 in. and 195
> ex. It has a 70mm throttle body and egr spacer, gt 40 intake, 24lb
> injectors, nos fogger system"not used at the moment", msd billet dist,
> 6AL, and HVC blaster coil. When I am at a cruising speed and the
> engine RPM's are about 2200 it sounds like its missing, but everything
> in the Ignition system is new, and I have around 42lbs of fuel
> pressure. Whats up? Does anybody have some insight.
>


What Spark Plugs? Why am I thinking Bosch double plats!

Buy the same exact plugs that came with the 93 Cobra new....
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Old 07-26-2005, 19:01   #4 (permalink)
toytrd89
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Re: 89 mustang hesitation

The plugs are Denso uridum "no Bosch in my car".

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Old 07-26-2005, 19:01   #5 (permalink)
toytrd89
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Re: 89 mustang hesitation

My car has two fuel pumps, one in take and a Vortec T-Rex pusher pump for
the nitro. Both new, Thanks for trying to help!

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