89 62, 260k miles, stock everything, all smog equipment still there (yay, Cali) head was pulled 15k miles ago and completely redone. Everything else checked out ok so I stopped with just the head. Ran great after the work.
Started to get a random hesitation. Which got progressively worse, to the point that she has been parked for a bit. I’ve been through most of it, found lots of issues that needed to be corrected... but none have been the issue.
So far,
Plugs, wires, cap, coil and distributer (cap was not vented, guts didn’t look good. Swapped with known good dist, vented as per the fsm... timing is on point)
Egr tested and functional.
Fuel pump, filter, regulator and pulsation dampener are brand new. Lines are clear, didn’t check actual pressure but failing to reconnect the return told me it’s definitely working!
All vacuum lines have been checked, and/or replaced.
Cats seem ok via the tap on it and listen for loose material test.
Tps is also brand new and correctly adjusted
Tb is clean
Intake hose has seen better days, but isn’t drawing in air.
I know I’m missing some stuff, but here is the kicker. Runs great cold, drive around for 5 minutes and out of the blue just runs like crap. Sounds like it running on 3 cylinders. No power, shaking like a tweaker.
Pulling a code 51, which led me to replace the tps again. Code won’t go away. What bothers me, is when I pull the code... I get 5 flashes, pause, 1 flash, pause. Then it just flashes fast continuously. Doesn’t repeat the code.
Any ideas? Pulling out what little hair I have left on this one. And of course it’s due for smog test in a couple weeks.
Started to get a random hesitation. Which got progressively worse, to the point that she has been parked for a bit. I’ve been through most of it, found lots of issues that needed to be corrected... but none have been the issue.
So far,
Plugs, wires, cap, coil and distributer (cap was not vented, guts didn’t look good. Swapped with known good dist, vented as per the fsm... timing is on point)
Egr tested and functional.
Fuel pump, filter, regulator and pulsation dampener are brand new. Lines are clear, didn’t check actual pressure but failing to reconnect the return told me it’s definitely working!
All vacuum lines have been checked, and/or replaced.
Cats seem ok via the tap on it and listen for loose material test.
Tps is also brand new and correctly adjusted
Tb is clean
Intake hose has seen better days, but isn’t drawing in air.
I know I’m missing some stuff, but here is the kicker. Runs great cold, drive around for 5 minutes and out of the blue just runs like crap. Sounds like it running on 3 cylinders. No power, shaking like a tweaker.
Pulling a code 51, which led me to replace the tps again. Code won’t go away. What bothers me, is when I pull the code... I get 5 flashes, pause, 1 flash, pause. Then it just flashes fast continuously. Doesn’t repeat the code.
Any ideas? Pulling out what little hair I have left on this one. And of course it’s due for smog test in a couple weeks.