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After going back through every step and checking every hose, wire connection and sensor, the problem is finally solved!
After putting the car in the backyard for a while, apparently the pulsation damper was dying a slow but certain death. Each time I would mess around with it, the car was getting harder and harder to start. It finally failed completely that let me narrow it down…rather quickly.
Thanks for the help though!
Sorry for the delay, I kinda gave up for a bit ……
Jacob- I checked the IAC and Purge solenoid connections. They were correct, I couldn’t swap them if I tried becasue of the wire lengths.
69Diofan- I tested the fuel pressure and it was high, 71psi. I checked for pinched lines and didn’t anything so I replaced the fuel press reg. Pricey since it is now nla. The car is a manual so not really a way to check idle under load as you spoke of. It will drive though…as long as I don’t give it any gas.
Redfury- I disconnected the purge solenoid, IAC and the fast idle valve on the back of the intake. I also disconnected both sensors under the distributor. I didn’t see anything else to disconnect. Car started, idles a tad lower but smooth. Same thing, touch the gas and it bogs.
Not sure if this helps but…I noticed since the car has been sitting. It took quite a bit to start up. Almost like it lost fuel pressure. Maybe fuel pump beginning to fail?
Also also…I noticed if I disconncect the TPS, the idle does not lope. It should lope right?Thanks again for the help…..
-No codes coming up.
-Pcv valve would throw a code if it was bad. I’ll check it anyway, it can’t hurt at this point!
-I check the wiring harnesses, good idea.I’ll report back! Thanks!
Thanks for the response everyone…
I checked the ignition timing, it was off a tad but it is dead on now.
I also doublechecked the cranl/cam timing and it is still dead on.
I dropped the exhaust down and it made no effect. I took a look at the cat and it looked pretty good, no melting or clogged holes from what I could see.
I had no problems with the headgasket. Lined it up with the dowel pins, etc…
Did another compression test, 200+ across all cylinders.
I checked all the vacuum lines again…all good.The car idles great, no hesitation starting…no hunting…I could probably balance a quarter on end on the valve cover it’s so smooth.
What am I missing?
Yeah, you can buy just the TPS for a whole lot less($10-15) than the entire throttle body from honda. The only caveat is that you have to “clock” it. I’ve done it on a couple cars and see more and more often on other cars. You set it by measuring the voltage on the signal wire. Pretty easy actually…
I agree about the timing, I’ll pick up a light and check it. I’ll also check the cat as the car does have 180K miles on it! Thanks!