Mechanics

1998TOYOTA WON'T START

1998 Toyota Corolla

Engine problem
1998 Toyota Corolla 4 cyl Front Wheel Drive Automatic 135000 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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Joed991
January 28, 2008.



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.

Mmprince4000
Feb 29, 2008.
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


Tiny
Joed991
Mar 6, 2008.
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.

Rasmataz
Mar 7, 2008.
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.

Tiny
Joed991
Mar 8, 2008.
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