need help !!!

Topic: need help !!! (Read 2577 times) previous topic - next topic

Reply #15 – July 08, 2008, 08:44:22 PM

Cool, good luck to ya, and yes soapy water is the trick. When you test this theory make sure you spray around the intake manifiold gasket and throttle body gasket too. Oh yeah, when you have a chance (im assuming this car has a MAF sensor if this is the one with the H.O conversion)? If so, make sure no cracks devoped between the Mass air and the throttle body's rubber duct. Ive seen this be an issue too.

need help !!!

Reply #16 – July 08, 2008, 08:57:47 PM

Oh yeah, that fuel pressure thing, sure wish I could help you there but im not sure if it should drop off like that quick after the engine shuts off. You said that the car started to act up right after you installed the new walbro pump.. In my experience, I have had issues with fuel pressures before too. But what I have seen is the rubber line rupture that goes between the pump and the pickup line in the tank. This caused the car to surge, blow massive black smoke, bog down die and not even have the umph to move. I always thought that the fuel line should hold pressure even when the engine is shut off until you press the relief valve on the pressure guage. I remember doing pressure checks on a Chevy Celebrity with EFI once, it ran like , kinda like the symptom you have but it actually turned out to be a grounding issue. Wierd.

need help !!!

Reply #17 – July 08, 2008, 10:33:11 PM

sorry,,, been laying low off the board,, missed this interesting thread.

as much as it hurts me to say this,, pull the fuel rail off while still connected to the fuel lines.

Cycle your key on ,,,off,,,,wait,,,,,,,,,,,,on,,,off.....wait,,,,,,,,

(ie- prime the fuel injectors.)

now get out of the car and see if one of your injectors is dripping with fuel with the key off.

ie- injector is stuck.

I have a write up on the injector filter delete,, also you can cycle each injector with any decent 12v power source and listen to the click. if it aint clicking, the ball valve isnt opening, nor closing.

might explain the rich condition by way of adding a high vol fuel pump in behind old orings.

This however does not explain why all the plugs were rich looking.

to answer your other question,,,,,, duct tape your fuel pres tester to the windshield and drive while watching the guage. see what the presure is in between gears.

also,, disconnect your fuel feed line to the fuel rail and rig up a hose to the end of it.
ground out your tan light green wire at the eec self test connector.
turn key on
observe how big of a mess you just made with the fuel presure out of control because you forgot to add a bucket under the hose,,lol

as for the tps,, go back and correct that before someone in the intraweb finds your ref to 98volts,,lol. (unless you meant centi volts,,lol)
the green wire should have .6-.9vdc with the key on only and should increase in voltage ***WITH NO OPENS**** in the following range of .6-4.7vdc. You have to check this with a digi meter very very slowly but an buttstuffoge meter is best suited for checking variable resistors.

dont forget to check the random things to like the things your not thinking of now.
ie- blueish to white spark
vac presure
compression numbers
smell or look of gas in the oil
smell or look of oil in the coolant

ect ect,, the basics.

need help !!!

Reply #18 – July 09, 2008, 12:47:35 AM

Quote from: flipnbird;226516

,,,,also i have been doing some searching on here about fuel pressure and i have noticed that as soon as i turn my car off(like it stays running for a long time)my fuel pressure gauge drops within a few seconds??

This is bassakwards. The engine should turn off immediately and the fuel pressure stay up for a long time..

Put a meter on the red/light green wire on the coil. The 12v should drop when you turn the ignition off. This same wire also goes to the TFI and the EEC to let them know the ignition is off.

It sounds like you are running until the EEC power relay drops. This relay drops about five seconds after the ignition is turned off.

need help !!!

Reply #19 – July 09, 2008, 06:19:02 AM

Quote from: softtouch;226564

This is bassakwards.

No it's not bassackwards, the car does shut off immediately and the pressure goes down within a few seconds. Read the whole thread

but thanks for the input

need help !!!

Reply #20 – July 09, 2008, 11:46:43 AM

freahaftr8-- actually it didn't start acting up until the day after it ran hot, it was running fine with the new pump up till that day! it was kinda funny yesterday, i hooked the code reader up and she went through the cycles then she sat there and purred untill i turned the reader off then she died, started her back up and she died???????????? I am just wondering if something (sensors?) maybe got fudged up from it running hot that day??

Thanks guys,, I / we will figure this out!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

need help !!!

Reply #21 – July 11, 2008, 06:10:44 AM

New info as of last night, I reset the puter and ran codes(again)started her up, turned the reader on, went through the cycles (still code 94,33)and she sat there and purred, code reader went off and she sat there and purred so i let her sit and idle for a few minutes.
I figured while she was ideling i would keep an eye on fuel pressure and i noticed that the pressure would slowly, i mean slowly(2lbs in 5-7 min.), so i would turn it back up a little, it would go back down (slowly) so i would turn it back up again, it finally looked like it was sitting steady at 32lb's and Hell i was afraid to turn the thing off !!! she had been running for like 30 minutes.I could rap it up 3-4000 she would come right back down to 750.
I then decide to check my timing since i had to pull the dist. the other day to try a new TFI, but i marked where everything was at before i pulled it out, so anyway i pull out the spout, hook up the light and start the car, she starts right up and idles. I then proceed to check my timing and it was only at 10* so i turned it up to about 12* (i normally ran at 16*) and then she started that crazy idling shnit again so i turned it back down to 10* and she still ran shnitty and then died!! Tried to crank her up and she would start then die, start then die.

THIS THING HAS GOT ME STUMPED !!

need help !!!

Reply #22 – July 11, 2008, 07:25:35 PM

When pressure drops, and it starts to run bad, disconnect the fuel pres reg. line and cap it, see if idle comes back..

need help !!!

Reply #23 – July 14, 2008, 05:49:18 AM

Well guys (knock on wood) she is fixed, been running all weekend. don' t ask what i did cause i don't know !!!. Thursday eveningI took the battery cable's off and left them off till friday evening, hooked them back up and fired her up, stumble,stumble then she ran fine so i let her sit and run for 15 min. shut off then restarted---started right up and idled fine.Then I checked the timing(again), tps(again),F/P(again), gave her a bath and took her out for a little drive, drove fine. I will take her out for a longer ride this week....... Let's see what happens !!!!

Thanks guys for ALL your help !! I do appreciate it--

just hope she keeps on running??????????????????????????????????