Re: 1983 Cressida Hesitation

Ray -

I posted this to the thread, but am sending the text directly to to to
ensure you see it. Thnks.

Ray -

Thx for your insight. Below are my responses to your comments.


The hesitation occurs in park and in gear. The motor will not hold any
rpm above, or slightly above, idle. I inspected the duct work between
the AFM and throttle body, and see/hear no leaks. Also, the vac gauge
is rock steady at 22" at idle. I don't think my problem is a vac leak,
or I'd see some movement on the vac gauge, or a lower reading at idle.
I will check the vac gauge, when opening the throttle. The engine does
not rev, so this test probably won't help. I will test the EGR w/ my
Mighty Vac. Thx for that idea. I think it is a good idea (better MPG's)

to replace the O2 sensor given that it is the original part that is 23
years old w/ 154k miles. My replacement parts are all aftermarket. I
don't think the problem is ignition related replace parts (cap, rotor,
wires & plugs). My feeling is that it is
air/fuel delivery related, or an exhaust restriction. If the EGR checks

out OK, I will disconnect the exhaust pipe at the exhaust manifold to
confirm/rule out an exhaust restriction. Maybe my aftermkt fuel filter
I installed
is bad, but highly unlikely. I will also hook up my fuel pressure
gauge. My elec fuel pump is noisy. Is this normal for this car, or
maybe an indicator that it's going bad??? I'd also like to test the AFM

voltage as you recommend. I just bought a Chilton's book for this car
on eBay. I hope this procedure is in the book. I'll also add some
injector cleaner to the gas tank.


- Glenn