hind -sight seems 20/20?
Well, now the car has about 8 parts that did not need to be changed!
sorry , really , that i helped you.
also, i never question your ability to understand !, only my ability to articulate it (btw, the vacuum leaks were REAL!)
lessened learned, never help profs.
and always change out the ECU first.
dangme.
PS. I never said the pump was bad, i said, if the pressure varies, there is a problem. only THAT. !
The 8v has Barometric fuel pressure controls, that is , only altitude changes fuel pressure, totally unlike any 16v, MPI , Air density car.
TBI is unique. totally.
more answers, and comments.
A/T questions.
the A/T clutch has a stall speed. (3 speed answer, 4 is more complex)
and if the engine don't idle correctly it transgress in to that clutch stall threshold deeply. causing you to have to hold the brake aggressively at extreme idle. (effect 1)
The A/T sifting is controlled by (driver demand >throttle, Vacuum(load, hills) and , veh speed (gov) and the shift lever)
The engine with a huge vacuum air leak, as your's had, causes the Vacuum to DROP, this tells the A/T that load is heavy (falsely !) and causes unwanted down shifting and or, late or delayed up-shifting.
The ECU also decides when to activate the TCC , lockup. that too can fail if the ECU was drilled through willy nilly.
but for most of us, a new ecu is $500 from Cardone (a top re- builder in USA) or a used one for less and a big time praying, as we wait for mail.
but i must admit the moment i saw drilled holes, in my ECU main board. , a spare 2nd ECU would be ordered. (and ECU caps are changed at drop of hat on all)
All cars need parts, they don't need (as it may seem?), here is a popular list.
a tune up. (buy parts or waste fuel, i'ts everyone's choice)
parts that seem intermittent, some intermittent are very hard., buy a scope and see it mess up, or buy a new part. life's a beach ! as is reality.
I dont wish intermittent on ANYONE. (some are horrid to find, case in point flaky CKP/s)
EGR parts, shops must change it on suspect, for 2 reasons, illegal to run car with out (or testing with out) and labor to clean is more that part value. (way over) The EPA does not allow any mech, to ignore discovered, bad, smog related parts (huge fines!) Read up ?
but hard failures are easy. we find them and correct them as found, if you think that vacuum leaks are good, then try running like that..
Ok, that covers , cars and costs. and odd symptoms.
Be happy this old car is simple, try a 2013 car.... and the silly "your tires are low BS" detectors...
Cheers
PS.
Most cars, the ECU can go quite nuts if you have a SET of failures, that is why we condemn the ECU last. (Garbage in , nets garbage out)
last last.
the ECU case is body ground and the ECU has filters that use body ground to protect all the inputs from damage.
no body ground , less protection.! (it has 2 types of protection, 1 will be dead)
YMMV
Well, now the car has about 8 parts that did not need to be changed!
sorry , really , that i helped you.
also, i never question your ability to understand !, only my ability to articulate it (btw, the vacuum leaks were REAL!)
lessened learned, never help profs.
and always change out the ECU first.
dangme.
PS. I never said the pump was bad, i said, if the pressure varies, there is a problem. only THAT. !
The 8v has Barometric fuel pressure controls, that is , only altitude changes fuel pressure, totally unlike any 16v, MPI , Air density car.
TBI is unique. totally.
more answers, and comments.
A/T questions.
the A/T clutch has a stall speed. (3 speed answer, 4 is more complex)
and if the engine don't idle correctly it transgress in to that clutch stall threshold deeply. causing you to have to hold the brake aggressively at extreme idle. (effect 1)
The A/T sifting is controlled by (driver demand >throttle, Vacuum(load, hills) and , veh speed (gov) and the shift lever)
The engine with a huge vacuum air leak, as your's had, causes the Vacuum to DROP, this tells the A/T that load is heavy (falsely !) and causes unwanted down shifting and or, late or delayed up-shifting.
The ECU also decides when to activate the TCC , lockup. that too can fail if the ECU was drilled through willy nilly.
but for most of us, a new ecu is $500 from Cardone (a top re- builder in USA) or a used one for less and a big time praying, as we wait for mail.
but i must admit the moment i saw drilled holes, in my ECU main board. , a spare 2nd ECU would be ordered. (and ECU caps are changed at drop of hat on all)
All cars need parts, they don't need (as it may seem?), here is a popular list.
a tune up. (buy parts or waste fuel, i'ts everyone's choice)
parts that seem intermittent, some intermittent are very hard., buy a scope and see it mess up, or buy a new part. life's a beach ! as is reality.
I dont wish intermittent on ANYONE. (some are horrid to find, case in point flaky CKP/s)
EGR parts, shops must change it on suspect, for 2 reasons, illegal to run car with out (or testing with out) and labor to clean is more that part value. (way over) The EPA does not allow any mech, to ignore discovered, bad, smog related parts (huge fines!) Read up ?
but hard failures are easy. we find them and correct them as found, if you think that vacuum leaks are good, then try running like that..
Ok, that covers , cars and costs. and odd symptoms.
Be happy this old car is simple, try a 2013 car.... and the silly "your tires are low BS" detectors...
Cheers
PS.
Most cars, the ECU can go quite nuts if you have a SET of failures, that is why we condemn the ECU last. (Garbage in , nets garbage out)
last last.
the ECU case is body ground and the ECU has filters that use body ground to protect all the inputs from damage.
no body ground , less protection.! (it has 2 types of protection, 1 will be dead)
YMMV
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