Flashing dash lights, loss of power...wierd

Reply
 
LinkBack Thread Tools Display Modes
Old 07 Sep 2006, 10:45 am   #1 (permalink)
geronimo
Guest
  • Posts: n/a
  • User Status:


Default Flashing dash lights, loss of power...wierd



Its my newly overhauled 1988 Camry wagon with the 4cyl 3SFE engine.
It still has some bugs to be worked out...the overheat problem is gone
and the AC is fixed, blowing cold air now. When I drove it last
night, I got some strange indications. Right after starting up, I
turned on the headllights. The charge, brakes and lights red indicator
lights..all three... were flashing. Not steady on, but all three
flickering together. As I drove, the flickering became dimmer, until
the warning lights went away entirely. If it does it again before I
hit the road, I will put my multimeter on the alternator
output...however, The headlights were reflecting off the garage door
at first, and they were not dim or flickering....so it seems that it
was not an actual alternator intmt low output problem. Its a new
alternator, and belt is not slipping. By the time I had gone about 2
miles all was normal, no more red indications.

However, just after this on the same trip, the engine began to cut
out/lose power intmt. Then it had such a severe power loss that I had
to crawl at 15 MPH to a parking lot. All warning lights stayed off.
THe headlights remained normal, and AC blower did not change RPM.
Tank had plenty of fuel. Well, all I did was shut the engine off for a
few seconds and restart....then I was able to finish last mile of
trip, it ran perfectly again! I have seen the engine do this
before... losing power, slowing down to a crawl. It went about a
week ( lots of daily use) before having this loss of power problem
again. IT's not setting the check engine light when it happens. When
this happened, I put a fuel press. gauge on the fuel line just past
the fuel filter (and before fuel rail), and the fuel pressure had
fallen from around 40 or so to just 12 PSI. So I have a suspicion
that the fuel press. is dropping real low again. I don't think there
is anything electronic in the fuel delivery system except the injector
control system. The pressure would be solely dependent on the fuel
press. regulator and the fuel pump.....right? It has a brand new fuel
pump and fuel filter. I guess I have no choice but to buy a new fuel
press regulator and replace (ouch...I think they cost over $100!),
and it is a bear to get to it!
I have tried that fuel press test in the Haynes manual..you jump
two holes on the diag. connector and then read the pressure...and it
checks good. Seems like it is something electrically induced....since
it can go for days/many miles and not lose power once. But how could
that be? Wouldn't a bad fuel press. regulator be bad all the time, or
bad once up to temperature? I checked each spark plug some time ago
when it had this loss of power problem...when it was only running at
a crawl....and the spark was still normal. SO it pretty much has to
be the ECU/injectors or fuel pressure regulation causing it, Right?

thanks, Jim



  Reply With Quote
Old 07 Sep 2006, 01:45 pm   #2 (permalink)
Steve Peterson
Guest
  • Posts: n/a
  • User Status:


Default Re: Flashing dash lights, loss of power...wierd


"geronimo" <Jamesw@grandecom.net> wrote in message
news:ii13g2lauar7fsff18qpfv5n16bd9m8oti@4ax.com...
>
>
> Its my newly overhauled 1988 Camry wagon with the 4cyl 3SFE engine.
> It still has some bugs to be worked out...the overheat problem is gone
> and the AC is fixed, blowing cold air now. When I drove it last
> night, I got some strange indications. Right after starting up, I
> turned on the headllights. The charge, brakes and lights red indicator
> lights..all three... were flashing. Not steady on, but all three
> flickering together. As I drove, the flickering became dimmer, until
> the warning lights went away entirely. If it does it again before I
> hit the road, I will put my multimeter on the alternator
> output...however, The headlights were reflecting off the garage door
> at first, and they were not dim or flickering....so it seems that it
> was not an actual alternator intmt low output problem. Its a new
> alternator, and belt is not slipping. By the time I had gone about 2
> miles all was normal, no more red indications.
>
> However, just after this on the same trip, the engine began to cut
> out/lose power intmt. Then it had such a severe power loss that I had
> to crawl at 15 MPH to a parking lot. All warning lights stayed off.
> THe headlights remained normal, and AC blower did not change RPM.
> Tank had plenty of fuel. Well, all I did was shut the engine off for a
> few seconds and restart....then I was able to finish last mile of
> trip, it ran perfectly again! I have seen the engine do this
> before... losing power, slowing down to a crawl. It went about a
> week ( lots of daily use) before having this loss of power problem
> again. IT's not setting the check engine light when it happens. When
> this happened, I put a fuel press. gauge on the fuel line just past
> the fuel filter (and before fuel rail), and the fuel pressure had
> fallen from around 40 or so to just 12 PSI. So I have a suspicion
> that the fuel press. is dropping real low again. I don't think there
> is anything electronic in the fuel delivery system except the injector
> control system. The pressure would be solely dependent on the fuel
> press. regulator and the fuel pump.....right? It has a brand new fuel
> pump and fuel filter. I guess I have no choice but to buy a new fuel
> press regulator and replace (ouch...I think they cost over $100!),
> and it is a bear to get to it!
> I have tried that fuel press test in the Haynes manual..you jump
> two holes on the diag. connector and then read the pressure...and it
> checks good. Seems like it is something electrically induced....since
> it can go for days/many miles and not lose power once. But how could
> that be? Wouldn't a bad fuel press. regulator be bad all the time, or
> bad once up to temperature? I checked each spark plug some time ago
> when it had this loss of power problem...when it was only running at
> a crawl....and the spark was still normal. SO it pretty much has to
> be the ECU/injectors or fuel pressure regulation causing it, Right?
>
> thanks, Jim
>
>
>

Your problem sounds to me like a bad ground wire, not open just a poor
conection. Good luck tracking it down.
Steve


  Reply With Quote
Old 09 Sep 2006, 06:48 am   #3 (permalink)
geronimo
Guest
  • Posts: n/a
  • User Status:


Default Re: Flashing dash lights, loss of power...wierd




Have driven car on several trips since posting that message. The light
flashing problem is very minor, and is apparently not connected at all
with the loss of power problem. Have noticed lights flashing on
subsequent trips, but the engine has since then been running perfect,
for about another 60 miles or so.
This intermittent loss of power, where no code is being set, is going
to be a pain to get resolved. I could take it back to my mechanic
shop....it would sit in his yard for a week before he even gets to it,
and then it would not mess up, he probably wouldn't duplicate it.
Can't afford to rent a car for a week, so that is out of the question.
Its up to me to find and fix, and get done within a day or so. Its
my only car for my family so it has to be fixed.
I put my fuel pressure gauge back on the fuel line, so next time
it happens I can see if its the same thing.... fuel pressure falling
from around 40 PSI to around 12 PSI...if so, then I have to decide
whether to "shot-gun" a new fuel pressure regulator and see if problem
goes away. There is no problem with the vaccum line to it...I checked
its condition.

Thanks geronimo

  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:01 pm.

Attribution:
Autoblog
Powered by Yahoo Answers



ToyotaLexusForum.com is an unofficial community for car enthusiasts. ToyotaLexusForum.com is not affiliated with Toyota Motor Corporation in any way.
Toyota Motor Corporation does not sponsor, support, or endorse ToyotaLexusForum.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.