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Cranks no start

Tiny
SZALKUSKT
  • MEMBER
  • 1994 TOYOTA PICKUP
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Manufactured 10/1994 pickup truck. Cranks but will not start. I checked for spark on one spark plug. It does have spark. When I pulled that plug it was not fouled with fuel so I suspect engine is not getting fuel. I have jumper-ed the diagnose connector under hood and there are no codes. I have checked all fuses under the hood and also under dash by drivers left foot kick panel. They are good. I am wanting to know how to approach this for checking for fuel to the engine probably the fuel pump and its associated relays which I think probably I should focus on? I am just looking for next step on what to do and possibly verify the fuel pump operation/ circuit in my opinion might be a problem.
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Wednesday, October 19th, 2016 AT 1:04 AM

71 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Jump power to pump at the data link terminal to see if pump is working. see picture.

Here is a guide to walk you through how to figure it out.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back

Cheers
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Wednesday, October 19th, 2016 AT 2:43 AM
Tiny
SZALKUSKT
  • MEMBER
  • 274 POSTS
With ignition key on voltage is present at B+ terminal at data link connector. I put the jumper wire across to fuel pump as described and pump ran confirmed by pump in fuel tank noise and noticeable sound of pressure building in engine compartment fuel line. Pretty certain pump is operable. What should I do next? A relay perhaps?
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Wednesday, October 19th, 2016 AT 8:42 PM
Tiny
SZALKUSKT
  • MEMBER
  • 274 POSTS
I still need help troubleshooting the fuel pump circuit
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Saturday, October 22nd, 2016 AT 2:15 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
No problem, here are the fuel pump wiring diagrams you requested.

Please let us know what you find so it will help others.

Best, Ken
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Saturday, October 22nd, 2016 AT 11:55 AM
Tiny
SZALKUSKT
  • MEMBER
  • 274 POSTS
Well, the diagrams helped thanks. Turns out when I opened the air flow meter the truck started then died out after a few seconds. So being that I checked the efi relay under the hood and it was good, I took the glove box out and looked at the circuit opening relay bolted to the side of the truck at the kick panel area. Since it was in the cavity of the body it was subjected to rain water leaking through a rusty hole in the window frame on the side of the windshield. So, since it was wet I went to Napa and bought a relay and put it in and truck is running fine now. Fuel pump operates normally. Mission accomplished. Thanks for your guys help!
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Saturday, October 29th, 2016 AT 1:43 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Best, Ken
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Sunday, October 30th, 2016 AT 8:20 PM
Tiny
ELIHAWJ
  • MEMBER
  • 2 POSTS
  • 1994 TOYOTA PICKUP
  • 6 CYL
  • 4WD
  • MANUAL
  • 160,000 MILES
My truck engine turns but will not start. I took out the spark plugs and five of them were wet with fuel or oil and wonder if my engine is flooded with oil. Anyone with similar situation? Can replacing new spark plugs solve the problem or does it new engine overhaul?
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi elihawj,

Should be fuel flooding the engine. If it is oil, the engine would seize up while trying to crank.

Did you check if there are sparks from the plugs while cranking?

Try this link, it should be helpful. Let me know the results.

https://www.2carpros.com/first_things/car_cranks_but_wont_start.htm
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
ELIHAWJ
  • MEMBER
  • 2 POSTS
I replaced all the spark plugs, wires, rotor, distributor cap, and a new battery and now it's running. Thanks for the tips and the website.
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
OWHYME
  • MEMBER
  • 1 POST
  • 1994 TOYOTA PICKUP
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
My truck will just click when you turn the key to start it up. I have replaced the battery, distributor cap and rotor and the spark plugs. Occassionally the enging will crank over (sluggishly) after you turn the key about 15-20 times but wont start. Also as I was trying to put the new spark plugs in can you tell me why they are not going in with the threads flush with the engine? They still have visible threads when you check before you put the boot cover back on. Im afraid to over turn them and crack them. HELP please. Sometimes you can get in the truck and turn the key and it will fire right up. But now you have to turn and turn the key to get about a 5 second attempt of a "crank over".
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try this hold key to start postion and bang on the starter if it kicks over-replace the starter. If not look for power at the starter solenoid black and yeloow wire-No power check the starter relay/park and neutral switch and ignition switch


https://www.2carpros.com/forum/automotive_pictures/12900_st1_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_st2_1.jpg

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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
BENBUGS
  • MEMBER
  • 3 POSTS
  • 1994 TOYOTA PICKUP
  • 159 MILES
Truck wont start after going dead and recharging the battery. It will start everytime but wont stay running. It will run if you spray starting fluid in it. The fuel pump is working because when you jump the terminals you can hear it running. Swapped out map sensors and got the same results. RAN FINE WITH NO LIGHTS BEFORE BATTERY WENT DEAD!
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the idle air control valve, EGR valve, throttle position sensor and the airflow meter
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
It will run if you spray starting fluid in it- Does it continues to run after you use the start fluid or runs with start fluid only then dies out
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
BENBUGS
  • MEMBER
  • 3 POSTS
It doesn't continue. When you stop spraying it dies!
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure with a gauge to rule out the fuel pump as the problem
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
DNEWITT21
  • MEMBER
  • 2 POSTS
  • 1994 TOYOTA PICKUP
  • 4 CYL
Hi, my 94 toyota pickup has now been not running for 5 days, it cranks, fuel pump replaced fuel filter been replaced, fuel pressure regulater replayed, relays and fuses, all the sensers cheched and tested. Engine start when you spray fuel starter in, no error codes do not know what to do next to fix this problem.
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
If it starts with starting fluid, then you are not getting fuel. Make sure the fuel pressure at the rail is within spec. If it is, check to see if the injectors are getting power.
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
BENBUGS
  • MEMBER
  • 3 POSTS
Ok apparently it thru some codes now but where do we start? It said 14, 24 & 31. The IAT sensur is in the MAP sensor but I put a different one on from another Toy and no change! VERY STUMPED
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)
Tiny
DNEWITT21
  • MEMBER
  • 2 POSTS
Wow so far off the mark. We had it fixed back three months ago. If anyone having the same problem it an easy fix. Check the ground wire on the engine what is for the efi and clean the connection and place back. Truck is working well.
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Tuesday, October 16th, 2018 AT 1:18 PM (Merged)

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