Author Topic: engine problems (Read 3847 times)

tom85 · « **on:** Mar 04, 2008, 11:07:10 AM »

my new crate motor will not start it in a 85 4runner efi and i have code comeing up it is the swich signal code and i dont know how to fix it. i need help

twistedtoy92 · « **Reply #1 on:** Mar 04, 2008, 11:47:54 AM »

disconnect the battery for ten minutes then reconnect see what happens

tom85 · « **Reply #2 on:** Mar 04, 2008, 12:51:01 PM »

ive tryed that didnt work

twistedtoy92 · « **Reply #3 on:** Mar 04, 2008, 04:57:41 PM »

what code is it flashing???

tom85 · « **Reply #4 on:** Mar 04, 2008, 05:34:24 PM »

well i work on it today redid the throttle body linkage and the tps and the code 11 went away and now i have code 7 which is the tps and its brand new but i think it might be for a v6

tom85 · « **Reply #5 on:** Mar 09, 2008, 02:00:42 PM »

OK well i got it to start but it will only run for about 10 seconds then shut off and if u push on the gas peddle when it is running it will shut off i cant figure it out has any one have this problem

86bobbedtoy · « **Reply #6 on:** Mar 09, 2008, 02:34:43 PM »

tom85 · « **Reply #7 on:** Mar 09, 2008, 03:13:56 PM »

ill give it a try

tom85 · « **Reply #8 on:** Mar 09, 2008, 04:48:47 PM »

i tryed the tps that didn't help the manual say under the trouble shooting that it might be a loose connection at the distrubtor, coil, or alternator or a vacuum leak but checked the connections and looked for vacuum leaks but didn't find any thing I'm running out of ideas I'm getting frustrated at this build the motor went in about 4 months ago and i just got it to start but it wont stay running I'm about to take it to the dealer and have them fix it

twistedtoy92 · « **Reply #9 on:** Mar 09, 2008, 05:13:27 PM »

hmm.... i had that same problem after a swap, the air flow box has that sensor in there that corresponds with the circuit opening relay.... the connecting tab on the air flap was bent and wouldnt make the connection to complete the circuit, start and run for a 15-25 seconds then die out.... that was fun to find!!!

tom85 · « **Reply #10 on:** Mar 09, 2008, 05:44:11 PM »

I looked at mine it looks fine but I'm not sure what it is your talking about if its that trapped door looking thing then mine is fine

twistedtoy92 · « **Reply #11 on:** Mar 09, 2008, 05:45:21 PM »

you can only get to it by cutting the top off of the trap flap

tom85 · « **Reply #12 on:** Mar 09, 2008, 05:54:52 PM »

how did you do that just take a knife around it andwhat did u do to put it back together

tom85 · « **Reply #13 on:** Mar 09, 2008, 06:16:45 PM »

well i cut the top off and every thing in side makes a connection so its not that i wish it was then this would be done but its not and i have a code 11 but i don't think thats what causing it to stop

twistedtoy92 · « **Reply #14 on:** Mar 09, 2008, 08:24:18 PM »

best test to make sure, after you seal that back up, pull it off, start it and watch the flap, if it starts to close then let it die, start it again and hold it open... if it doesnt die, theres the prob! double check ALL connections and make sure you dont have a bad connection or a bare wire somewhere! gotta love those little electrical gremlins!!

tom85 · « **Reply #15 on:** Mar 10, 2008, 05:07:44 AM »

OK i started it and the flap never closed and with the key in the on postion a push open the flap and i can hear some thing come on like a injector and the return fuel line that comes off the fuel line moves my dad thinks that it not getting any fuel but i don't know for shore

KDXSR5 · « **Reply #16 on:** Mar 10, 2008, 12:19:20 PM »

#1 most overlooked thing: fuel filter. Have you checked it yet? Even if it is new, some stuff could have been knocked loose in the tank while messing around with stuff and plugged the filter. Good luck.

DTB · « **Reply #17 on:** Mar 10, 2008, 12:21:20 PM »

Quote from: KDXSR5 on Mar 10, 2008, 12:19:20 PM

#1 most overlooked thing: fuel filter. Have you checked it yet? Even if it is new, some stuff could have been knocked loose in the tank while messing around with stuff and plugged the filter. Good luck.

there is a pre-filter in the tank right?

KDXSR5 · « **Reply #18 on:** Mar 10, 2008, 12:25:49 PM »

But unless the fuel pump has been replaced recently, who know what kind of condition the sock (or whatever its called) is in good condition? It was just an example, I was just trying to get the point across that he should look at the filter.

tom85 · « **Reply #19 on:** Mar 13, 2008, 09:42:23 AM »

well i replaced the fuel filter and nothing happend. i checked the volts on wires n.10 ad n.20 for the injectors and was getting weak volts and the survice manual does not tell you any thing about it except how to test it

twistedtoy92 · « **Reply #20 on:** Mar 13, 2008, 04:23:51 PM »

excessive resistance somewhere

tom85 · « **Reply #21 on:** Mar 14, 2008, 09:56:16 AM »

Yea would that be a short somewhere what do i look for

MiniSimp · « **Reply #22 on:** Mar 14, 2008, 10:13:05 AM »

Check your fuel pressure and make sure your air box/tube is sealed.
Does it do this? If it does, new fuel pump time.

tom85 · « **Reply #23 on:** Mar 14, 2008, 10:27:15 PM »

that video didnt work but im have a guy from toyota come over and have i look ill let u know what happens and if he fixs it what he did to fix it

tom85 · « **Reply #24 on:** Mar 16, 2008, 05:52:01 PM »

well the toyota guy came by and did some test redid the throttle body sensor but he came up with the same thing i did that the enjectors where not fireing its getting volts but no ground from the ecu he is going to ask around work and just to come up with some thing

MiniSimp · « **Reply #25 on:** Mar 16, 2008, 05:59:36 PM »

Quote from: tom85 on Mar 16, 2008, 05:52:01 PM

well the toyota guy came by and did some test redid the throttle body sensor but he came up with the same thing i did that the enjectors where not fireing its getting volts but no ground from the ecu he is going to ask around work and just to come up with some thing

Did you test the fuel pressure yet?

tom85 · « **Reply #26 on:** Mar 17, 2008, 07:57:23 AM »

yea we got good fuel pressure we arent getting a signal from the ecu

tom85 · « **Reply #27 on:** Mar 18, 2008, 06:04:21 AM »

OK I've traced it down to a bad harness at one of the injectors some one try to solder the wires back to gether and it they touched each other it isn't to pretty

KDXSR5 · « **Reply #28 on:** Mar 18, 2008, 10:14:39 AM »

YAY ya figured it out! So, do you need a new harness now, or are you gonna try and fix this one?

tom85 · « **Reply #29 on:** Mar 18, 2008, 10:17:23 PM »

i have the guy from Toyota trying to find me a new one he said he cant get one and the old harness is to messest up to try to fix

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