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1998Toyota Corolla WOn't start Corolla

Tiny
JOED991
  • MEMBER
  • 1998 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 135,000 MILES
It cranks ok, there is spark at plug, fuel comes out fuel filter line, no fuses are blown, problem started after I got car out the garage and parked it outside on a very cold day, next day it won't start, could it be the fuel pressure regulator? Please help! Thanks.
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Monday, January 28th, 2008 AT 5:19 PM

14 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
First check for injector pulse and fuel pressure. You could also elect to spray starting fluid directly in the throttle body while cranking it.
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Monday, January 28th, 2008 AT 6:48 PM
Tiny
JOED991
  • MEMBER
  • 6 POSTS
Injector pulse at 3.3V dc. So I assume it gets a pulse, so whats after this? I do get fuel pressure right before it goes into the fuel injector rack right where the fuel pressure regulator sits. I wonder if the regulator is the problem then. Please reply asap. Thanks
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Tuesday, January 29th, 2008 AT 7:25 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Will it fire up with starting fluid sprayed directly into the throttle body while someone is cranking it?
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Tuesday, January 29th, 2008 AT 8:52 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I do get fuel pressure right before it goes into the fuel injector rack right where the fuel pressure regulator sits.

What was the fuel pressure reading? EFI system are very picky on fuel pressure wrong pressure =No start. Sir you need to follow B5's instructions to the T to find the problem, also did you check the fuel filter?

Could also be that the coolant temperature sensor is acting up and not telling the computer to give fuel during initial cold starts. Report everything you have tried to B5 and I'll be watching too.
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Tuesday, January 29th, 2008 AT 11:14 PM
Tiny
JOED991
  • MEMBER
  • 6 POSTS
Sorry but I don't have a pressure gauge, but it did try to start while spraying starter fluid. I tried to use a OBDII but I could not get any readings for a fault code.
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Wednesday, January 30th, 2008 AT 8:04 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
That makes me belive you are not getting enough fuel pressure.
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Wednesday, January 30th, 2008 AT 8:12 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your Toy does not qualify for an OBD2 its an OBD1 find the diagnostic check connector in the engine compartment-jumper TE-1 or T to E-1 count the flash and report back the code/s
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Wednesday, January 30th, 2008 AT 8:12 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
We need that fuel pressure without it we ain't going nowhere-you should have bought a fuel pressure gauge instead of the scantool yours don't need it.
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Wednesday, January 30th, 2008 AT 8:19 PM
Tiny
JOED991
  • MEMBER
  • 6 POSTS
I am very sorry it is a 98 corolla I always get it confused with my 240sx(1989).

1998 corolla the OBD-II code is P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

what does that mean?
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Wednesday, January 30th, 2008 AT 8:55 PM
Tiny
GESCHAEF
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Joed991,

Did you ever solve this problem? I have exactly the same issue.
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Thursday, February 28th, 2008 AT 1:52 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
I am very sorry it is a 98 corolla I always get it confused with my 240sx(1989).

1998 corolla the OBD-II code is P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

what does that mean?[/Quote:d194c0b906]

It means the MAP sensor is not working. Usually when a sensor is out of range, the PCM sets a default value to keep it running (not very smooth) this default value is usually rich to prevent damage with a lean condition (rich is bad also but not as bad as lean).

So it may be that the engine is flooded because the MAP is setting the fuel at maximum.

Check the plugs for gasoline, the MAP sensor connection (electrical and vaccum) and the fuel pressure with a mechanical gauge.
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Friday, February 29th, 2008 AT 7:13 AM
Tiny
JOED991
  • MEMBER
  • 6 POSTS
Fuel pressure is 50 at cranking, then it levels off at 40... how about the fuel damper?? is right on the fuel rail before the injectors... could this be the problem? look at picture.. any suggestions?? thanks


http://www.2carpros.com/forum/automotive_pictures/149991_IMG_7008_1.jpg

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Thursday, March 6th, 2008 AT 7:10 PM
Tiny
RASMATAZ
  • MECHANIC
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If the engine can start check the pressure with and w/o the fuel pressure regulator. Also inspect the vacuum hose for vacuum and if gas is present in the vacuum hose FPR defective.
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Friday, March 7th, 2008 AT 1:11 PM
Tiny
JOED991
  • MEMBER
  • 6 POSTS
It would be hard to remove the fuel pressure regulator because is with the fuel pump, and I'm getting 50lbs pressure, so is with in specs. What I decided to do is to remove the fuel pressure resonator the one on the picture and cap the hole with a cork and tie wrap. Crancked the engine and Wooam, the car started. Total cost of my troubleshooting.
$64 map sensor (I broke the holder my fault)
17 Service Manual
2.50 T adaptor to rig fuel gauge
4.50 Fuel hose
3.00 clamps
Free Fuel gauge (I used my old A/C gauge)
128.99 Regulator damper

$219.99 total
but the knowledge gained priceless, the satisfaction to have fixed it priceless, thanks to all the people on this board that helped me out with this.
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Saturday, March 8th, 2008 AT 3:25 PM

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