3.4 wont run

wanna_be_wheelin · 06-25-2009, 04:45 PM

i have a 1993 toyota pickup i hydrolocked 2 3vz so i decided it was time to step up to a 5vz i got the motor in and everything handled but the dang thing wont fire it turns over sounds like maybe one cylinder is firing and than it seems like maybe it fires as the piston is traveling up and causes the motor to shudder and stop turning. i need any guidence any one is willing to give. the only thing that i could think is wrong is that my motor didnt come with any electronics so i bought a set of coils off ebay and 1 of them has a different part number than the other 2 maybe its the wrong one idk?

This ad is not displayed to registered members.
Register your free account today and become a member on Yotatech!

BAMF_CT2004 · 06-25-2009, 06:46 PM

i would call toyota and verify part numbers or maybe napa, autozone, etc. Start with that first.

jpmountainboy · 06-25-2009, 07:04 PM

"my motor didnt come with any electronics"...you did get an ecu with it though, right?

wanna_be_wheelin · 06-25-2009, 10:12 PM

my motor is out of a 1996 4runner and it only came with a auto harness. i found a wrecked 98 tacoma on craigslist and bought the ecu and harness from the tacoma. i already had a igniter coils and all the other electronics either on order or already on the truck. tomorrow im going to call Toyota and see what the part numbers are supposed to be for my coils and igniter because i think my timing is wrong.

yodathespian87 · 06-26-2009, 09:31 AM

Seeing as there is a difference in the years, I'm leaning towards that being your problem. Was the 98 a manual or auto?

BAMF_CT2004 · 06-26-2009, 09:39 AM

so you are currently using the harness and ecu that you bought from the tacoma right? From 96-02 it does not matter what year block you have. The most important about a 3.4 swap is that the ecu and harness PRODUCTION DATES match. Otherwise you better have you reading glasses to do some wire tracing and re=pinning

wanna_be_wheelin · 06-26-2009, 03:46 PM

yes i have the 98 tacoma m/t ecu and harness in my truck

RobD · 06-26-2009, 08:11 PM

Make sure your igniter is well grounded to the truck and that you're getting fuel.

Kiroshu · 06-26-2009, 08:42 PM

mass air flow? Timing? Compression? Fuel pump?

wanna_be_wheelin · 06-27-2009, 12:06 AM

uhm maf is good its a distributorless motor so how do u check timing and my fuel pump is wired to a switch on my dash and compression is good im buying 3 new coils tomorrow so that will eliminate my coil problem. i think it is the coils cuz i tried turning it over like a hour ago and a puf off blue smoke came from one of the coils and it was kinda hot. and my igniter is well grounded

06-25-2009, 07:04 PM	#3 (permalink)
jpmountainboy Registered User Join Date: Nov 2008 Location: CHICO, CA Posts: 304	"my motor didnt come with any electronics"...you did get an ecu with it though, right? __________________ 94 pickup trail rig/3.0, & 96 tacoma stock.

06-26-2009, 09:31 AM	#5 (permalink)
yodathespian87 Contributing Member Join Date: Apr 2008 Location: Colorado Springs, Colorado Posts: 464	Seeing as there is a difference in the years, I'm leaning towards that being your problem. Was the 98 a manual or auto? __________________ 86 Pickup 4x2, Manual (Sold) 87 Extra Cab Pickup 4x4, Manual (Sold) 93 4Runner 4x4, Manual, 3.4 Swap In progress 90 4Runner 4x4, Manual, Blown 3.0 (Stripping out for parts then to become a trail rig/camping/fun truck) 94 Lexus SC400, 1UZ, magnaflow exhaust, after market headlights, bought for parts for the swap into the 90 4Runner

06-26-2009, 08:11 PM	#8 (permalink)
RobD Registered User Join Date: Jun 2006 Location: Calgary, AB Posts: 1,726	Make sure your igniter is well grounded to the truck and that you're getting fuel. __________________ 1991 4Runner, 3.4 5VZFE swap, OME shocks/springs, 33" BFG All Terrain T/A KOs, Pioneer head unit, Infinity speakers, XM Satellite radio

06-26-2009, 08:42 PM	#9 (permalink)
Kiroshu Registered User Join Date: Oct 2007 Location: wade, NC Posts: 1,305	mass air flow? Timing? Compression? Fuel pump? __________________ My current: 1986 Toyota 4runner SR5 EFI 4cyl 2.4L 22RE 5-Speed 242,000 Miles 95% Stock __________________ (Still working on restoring her) My old: 1988 Toyota 4runner SR5 EFI V6 3.0L 3VZ-E 5-Speed 302,000 Miles All stock (sold)______________ (Was my fastest truck i miss her...) My old: 1989 Toyota 4runner Non-SR5 EFI 4cyl 2.4L 22RE Automatic 231,000 Miles (sold)______________ (was my quietest and slowest yota.)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

06-25-2009, 10:12 PM	#4 (permalink)
wanna_be_wheelin Registered User Join Date: Apr 2009 Location: washington Posts: 14	my motor is out of a 1996 4runner and it only came with a auto harness. i found a wrecked 98 tacoma on craigslist and bought the ecu and harness from the tacoma. i already had a igniter coils and all the other electronics either on order or already on the truck. tomorrow im going to call Toyota and see what the part numbers are supposed to be for my coils and igniter because i think my timing is wrong.

06-26-2009, 03:46 PM	#7 (permalink)
wanna_be_wheelin Registered User Join Date: Apr 2009 Location: washington Posts: 14	yes i have the 98 tacoma m/t ecu and harness in my truck

06-27-2009, 12:06 AM	#10 (permalink)
wanna_be_wheelin Registered User Join Date: Apr 2009 Location: washington Posts: 14	uhm maf is good its a distributorless motor so how do u check timing and my fuel pump is wired to a switch on my dash and compression is good im buying 3 new coils tomorrow so that will eliminate my coil problem. i think it is the coils cuz i tried turning it over like a hour ago and a puf off blue smoke came from one of the coils and it was kinda hot. and my igniter is well grounded