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1994 Toyota Tercel 94, won't start

Tiny
CAVE00
  • MEMBER
  • 1994 TOYOTA TERCEL
Hello Sir, I'm having difficulties on my 94 Tercel. I've check compression, timing, spark, and fuel/air intake but for some reason I can't get the engine to turn over. I've been working on it for about a week now trying to follow youtubes and forums about it with no luck. I really don't want to take it to the shop because I'm fully capable of fixing it myself, I've done some mechanic work in the past. I just need some help on what else it might be. I can say that last night I did manage to get it to turn over and run for about five minutes but once I killed it and tried again it never turned over. It seems like I need to get the throttle in a certain position, and we were holding it by hand when we got it started and we can't seem to find that spot again. Is there anything you can help me with?
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Tuesday, July 7th, 2015 AT 6:56 AM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan or codes and check fuel pressure with a gauge first. Auto parts rent it.
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Tuesday, July 7th, 2015 AT 10:12 AM
Tiny
CAVE00
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  • 10 POSTS
Already check those no codes and good pressure. I have adjusted the dashpot and idle speed screw on top of thottlebody got it going again but just once. I've replaced the coil. Maybe don't have everything just right don't know.
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Tuesday, July 7th, 2015 AT 1:57 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
What is fuel pressure good isn't an answer and using your finger doesn't make it either. Should be 41-42 psi with a jumper wire installed in data connector +B to FP ignition on and engine off should hold to 21 psi for 5 minutes after test if not then check for bad pump and or regulator. Also check your efi main relay and fuel pump relay also check the throttle position sensor for resistance. See pic.
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Tuesday, July 7th, 2015 AT 3:36 PM
Tiny
CAVE00
  • MEMBER
  • 10 POSTS
OK going to check fuel pressure again could not remember exact pressure but need to ask if there is a vsv for the fuel pressure regulator. Also run a test on the efi relay with a nine volt battery and it check out good.
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Tuesday, July 7th, 2015 AT 4:58 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is a vsv as well here is how to check it ihave no further suggestions on this vehicle.
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Wednesday, July 8th, 2015 AT 6:52 AM
Tiny
CAVE00
  • MEMBER
  • 10 POSTS
Ok checked fuel pressure it goes up to 42 psi but I can here it going out as fast as it is going in when I turn the pump off it goes right to 0 psi. When I try to start the car the psi will only go up to about 10 psi
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Wednesday, July 8th, 2015 AT 2:58 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure regulator or a bad pump. I have no further suggestions or comments.
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Thursday, July 9th, 2015 AT 6:31 AM
Tiny
CAVE00
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  • 10 POSTS
Thank you for your time but don"t known how to check fuel pressure regulator.
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Thursday, July 9th, 2015 AT 6:15 PM

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