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correct. if i go half way it takes off till it hits 3600-4000 rpm and falls back to 3000. it does this twice and then falls all the way down till 2200.
if I stay on the pedal, after 20 sec it takes off to 5g.
not sure, never tried. if it does, what will that mean?
I wont be able to try it until ground dries up more.
a lot of times a restricted cat convertor will cause this exact problem
by leaving out the O2 it allows the exhaust to escape enough to give its power back
if the cat is restricted it will bog down
we have to eliminate that first
if the power comes back replace the cat convertor will correct this problem
okay, i believe it is the cat now. I just need to know if this test works to diagnose the cat issue. Vacuum gauge test on the vacuum system. put a gauge on it and vacuum never exceeded past the idle vacuum.
I notice where the o2 is and I just cant get to it due to i dont have the specialty tool to pull engine forward, but i just got an idea on how to do it.
Please let me know about vacuum.
Okay, i broke exhaust loose. Got three full rotations on bolts. Started car and ot ran worse. By worse it had a slight rough idel.
Yes and inefficient fuel burn smell
are there any new codes?any codes at all now in the computer ?
It just has p0446. I erased, restart , ran 1min. Turned off and restart. Ran again 1min. Turned off and cgecked codes. No codes.
can you check what the fuel pressure is key on engine off ?
It be tomorrow. Starts great thou, no waiting or long crank.
P0300, p0446, and p1381. I had a thought and took car out on a drive with exhaust leak. After 10min i got these codes. Have to wait till tomorrow to test fuel pressure, starts great thou. With driving it, no way can i get on the highway yet a busy street with how its acting. Will put exhaust back together tomorrow.
I need ideas to fix this problem, so i'll continue to wait.
I thought i sent this last night. i guess i didnt.
these are the codes I have with exhaust at manifold loosen, P0300, p0446, and p1381.
these are what I had before, P0300, P0401, and P0446.
I am going to re-tighten the exhaust and hopefully that gets the car back derivable. before loosening exhaust I had no rapid acceleration, but if I drive easy it does fine. Now it wont even accelerate when driven easily.
when I get that done I'll go looking for a fuel pressure tester.
will too much pressure cause my no rapid acceleration?
car starts and idled great
okay, will do
okay first thing, here is the old codes and old fuel pump psi.
okay, about 48psi. right when turn ignition on it went to 53 then fell down to 48. running hang out about 50psi.
p0131, p0171, p0300, p0401.
reconnected exhaust and codes are p0134, p0300, p0401, and p1381.
psi 35 with ignition on and 45 when running. hi rpm is 50psi
so need a new pump, or could it be fuel filter
it is strange that it starts better and idles better with this fuel pump then the last one.
well car has a new Fuel pressure regulator. but yes I have a pump. I guess i'll break down and replace the year old fuel filter. fuel filter is after pump.
well, out of funds now till friday. then we'll see
I might be hosed on the fuel pump too. bought it off ebay and did read a fine print of "Certified Technician"
okay, got new pump. no codes. but running and idle still bad
yes to the skipping and sluggishness. it did shoot out p0134 and I erased it and has not come back. I found out what the evap issue was and when I installed new pump i made sure it didn't happen again. i am going to check fuel pressure. lastly the exhaust smells rich now.
okay, can you send me the wire diagram for that o2? Also, will have to see what happens when driving further distance. will let you know.
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