time to trouble shoot this beast
#1
661 5 digits from hell
Thread Starter
time to trouble shoot this beast
heres my problem
the car runs very rough stumbles at idle and all the way to 3800rpms and cleans up above that but not perfect.
Its basically so bad that its not driveable.
i have no clue what is wrong and need help
things i have already done:
1.)ok i tested compression and i was at 100psi on all three sides on both rotors.
2.)checked for spark by pulling wire off of the coil and found that all coils have even spark and are all firing.
3.)opened ecu and all solder points look to be very good its numbersare n326 18 881b
ok i went to take out the ecu and it was just sitting there not bolted down at all could that be part of my problems?
4.)looked over engine for loose wiring and the was none.
the car runs very rough stumbles at idle and all the way to 3800rpms and cleans up above that but not perfect.
Its basically so bad that its not driveable.
i have no clue what is wrong and need help
things i have already done:
1.)ok i tested compression and i was at 100psi on all three sides on both rotors.
2.)checked for spark by pulling wire off of the coil and found that all coils have even spark and are all firing.
3.)opened ecu and all solder points look to be very good its numbersare n326 18 881b
ok i went to take out the ecu and it was just sitting there not bolted down at all could that be part of my problems?
4.)looked over engine for loose wiring and the was none.
#3
661 5 digits from hell
Thread Starter
yes i did and i tryed to see if it wasnt getting enough fuel buy adding some by spraying some into the manifold but it just got worse and died
so the way i see it it is getting to much fuel
my seconday injectors are orange square and fat
could i have a bad fuel pump?
so the way i see it it is getting to much fuel
my seconday injectors are orange square and fat
could i have a bad fuel pump?
Trending Topics
#8
661 5 digits from hell
Thread Starter
here is a sound clip of it idleing http://www.savefile.com/files/8103801
and one of me doing a run http://www.savefile.com/files/7806484
and one of me doing a run http://www.savefile.com/files/7806484
#9
The Silver Bullet
Join Date: Mar 2004
Location: Kansas City/Springfield, MO
Posts: 864
Likes: 0
Received 0 Likes
on
0 Posts
very interesting. what year is it? if its 86 like your name suggests, then you can't pull engine codes
what kind of gas are you using?
how is your water temp sensor behind the waterpump?
what kind of gas are you using?
how is your water temp sensor behind the waterpump?
#10
661 5 digits from hell
Thread Starter
its an 88
and i dont know
all running was done on a warm motor
and i put 89 in it chevron
edit:
forgot to add i dont get a cel and it does work
and i dont know
all running was done on a warm motor
and i put 89 in it chevron
edit:
forgot to add i dont get a cel and it does work
Last edited by fast86rx-7; 03-05-06 at 01:02 AM.
#12
Originally Posted by Alex6969
very interesting. what year is it? if its 86 like your name suggests, then you can't pull engine codes
http://fc3spro.com/TECH/HOWTO/ERRORC...KI/zerror.html
And if anyone's interested, I have a prebuilt ECU code tester that I'm selling for $15 shipped - plugs right in, gives you the ECU error LEDs & the O2 test LED.
-=Russ=-
#16
The Cause of Death
^That could be your cuplrit.
And 87 is just fine for an N/A. I run it in mine every time I fill up.
Higher octane just burns a little slower, so it's real good/necessary for forced induction motors. Reduces the chance of detonation.
Hope your car gets running.
James
And 87 is just fine for an N/A. I run it in mine every time I fill up.
Higher octane just burns a little slower, so it's real good/necessary for forced induction motors. Reduces the chance of detonation.
Hope your car gets running.
James
#17
661 5 digits from hell
Thread Starter
update
its baack up and running i replaced all the vacuum lines and coolant hoses while i had the uim off i back flushed the injectors "fluid came out brown for a few seconds "
now when it is idleing itis just as bad but the instant you give it throttle it runs like a dream
and it also some what cruises as long as there is a load on the engine. if there isnt any load on the engine it begins to surge
im still getting a few codes when the engine is off but ignition is in run i get a tps code but when the engine is running i get a o2 code
so to me it sounds like i need to adjust the tps or replace and replace the o2 sensor
its baack up and running i replaced all the vacuum lines and coolant hoses while i had the uim off i back flushed the injectors "fluid came out brown for a few seconds "
now when it is idleing itis just as bad but the instant you give it throttle it runs like a dream
and it also some what cruises as long as there is a load on the engine. if there isnt any load on the engine it begins to surge
im still getting a few codes when the engine is off but ignition is in run i get a tps code but when the engine is running i get a o2 code
so to me it sounds like i need to adjust the tps or replace and replace the o2 sensor
Thread
Thread Starter
Forum
Replies
Last Post