Topic profile page for TBI.
This page has aggregated data from forum posts, threads, listings, online discussions, newsgroups, messageboards, and other online sources which contain user generated content for the term: TBI.
Topic "Tbi" was discussed 14,528 times on 925 sites in last 3 months
Started 1 day, 2 hours ago (2009-11-11 16:22:00)
by ddog800
Hi guys, I've got a fuel system question. I've got a 86 2.8 2wd with tbi... It seems like years ago when I had to test the pressure on this system, the pressure would remain after the fuel pump turned off. But Now I noticed that the moment the fuel pump goes off the fuel pressure drops to 0. Is this normal? Should this system maintain the pressure even after the pump and truck is off? If so, ...
Started 1 day, 7 hours ago (2009-11-11 11:58:00)
by ahill89
I hope some one can shed some light on this.....To start off I have 89 silverado TBI 5.7, shorty Headers, dual exaust and i still have the 02 sensor hooked up to driver side header. I did the modification to my tbi made a adjustible fuel regulator, Cut the ridges off the TB, bevield and smothed out the bores to get more air flow and remade my air cleaner, the bottom part i made from a old hologen...
Started 1 day, 10 hours ago (2009-11-11 08:58:00)
by Hubnut
91 TBI intake vacuum hookup??! Can someone tell me where this intake port is supposed to go to? PO left if off. If I block it off, truck misfires a bunch and has poor power, poor shifting. If I leave it open, it runs great with plenty of power. I'm assuming an unfiltered intake is a bad thing....
Started 1 day, 22 hours ago (2009-11-10 20:20:00)
by flatline11596
ok so someone game me a 2000 s10 today and i already have a 1992 tbi 350 built that i was going to put in my 1st gen but that is rotting to hell and wasnt worth it. What do i have to do to make this work. I know the truck will run with the 350 in it but what about the gauges and everything else that is wired off the stock ecm. I also am putting in my 700r4 from my 1st gen. any help is greatly...
Started 2 days, 8 hours ago (2009-11-10 11:04:00)
by DeeBird
i swaped out 4.3 to a 5.7 ....it is in a 91 s10 blazer, motor out of a 88 truck both tbi........I'm running motor on 4.3 ecm and it is droping to much fuel in at idle.......5.7 ecm is even worst .......ive replaced o2 sensor temp sensor and air idle and still not helping .......can someone help me please it is driving me crazy
Started 2 days, 22 hours ago (2009-11-09 20:48:00)
by Ned Kelly
I have to go do a fuel line repair on a 1988 350gas Burb that is about 25 miles away. Fellow tells me it's the feed line that goes into the TBI. Supposedly the fuel hose is broken/spewing fuel. Anyone know what size FI hose would I need for this repair? I'll use this style clamp: http://www.autobarn.net/iddifuincl.html
Started 2 days, 22 hours ago (2009-11-09 20:13:00)
by yjgator
Im swapping my 4.0/ax-15/np231 for a '94 TBI chevy 350/sm465/np205.. I'm selling my motor with the wiring harness but need to know what wires i should keep (if any) to swap in the chevy motor. Im getting the stock engine wiring harness from the chevy. Im sure im over complicating this but do i need to keep any wires from my engines wiring harness or can everything go. I ...
Started 3 days, 18 hours ago (2009-11-09 00:43:00)
by Yankees717
91 2.8 TBI,Injectors Won't Fire Hi all, Im having a tough time figuring this one out.A buddy's 91 S10 with the 2.8 TBI, the injectors will not fire any gas.We did a spark,fuel pressure and pump tests and everything passes GOOD.We tested the pressure and double checked it all.Its getting plenty of gas to the TBI. Engine cranks over just fine and the car will ...
Started 6 days, 6 hours ago (2009-11-06 12:55:00)
by PolarStar
Okay, so I'm pulling off the intake manifold and valve covers to change gaskets and hopefully fix a couple of problems. I also have sitting here in the garage my new (to me) 4.3 TBI that I want to install. I figured since I'll have the intake manifold off, I'll run it down to a machine shop and have them bore out bigger holes. My question is this: I want to test my engine with the ...
Started 5 days, 1 hour ago (2009-11-07 17:58:00)
by keykey
Have a 1990 with 3.1 TBI engine. Fuel pump + filter replaced about a year ago. Well maintained (plugs, wires, dist. cap+rotor replaced/in good shape). Fuel pump relay energizes when key on and when engine runs. I hear the fuel pump whirring in tank while relay is energized. It always starts, but only runs for a few seconds each time (about 2-5 seconds). I removed the plastic cover on Fuel ...
Started 6 days, 20 hours ago (2009-11-05 22:51:00)
by 98layinframe
i know there has to be a bunch of threads on this.. but cant seem to find them. anyways i have a 4.3 tbi 89 s10 with a 91 tbi harness in it. (previous owner hacked the shit out of the original harness so i just swapped it out) I also own a nice 91 suburban with a 350 tbi motor in it that im considering tossing into the s10. Will that motor connect directly up to my s10's harness, computer...
Started 5 days, 1 hour ago (2009-11-07 18:09:00)
by coolsteve13
Whats up folks! Listen I want to rebuild my TBI as stated in tittle. Having trouble locating one, and they seem to be different from Motor to motor, and years. I thought, as it looked like they were all the same but guess not. You guys have a source with a good price for a complete TBI gasket/O-ring kit for my........ 93' S-10 4.3L
Started 1 week, 1 day ago (2009-11-04 14:29:00)
by Burnsumrubber305
Kind of stumped with my truck (1988 GMC K1500, bone stock 350tbi/700r4) Went to start it a few days ago, started fine like normal but idle was kind of eratic. I let it warm up to temp and it made no difference. Long story short, it will not rev up, hold constant RPM, idle, or show a check engine light. I tried unplugging the map sensor and it idled fine, still missed a little and ...
Started 3 days, 1 hour ago (2009-11-09 17:30:00)
by mmayzak
ARE these interchangeable? I am looking to put my 1991 2.8 into a 1987 S10 (currently same motor but blown). If I do a completely motor swap, including the flywheel from MY 1991 motor will everything work - I plan to make my alternator and AC system as well). I am hoping this pull (and pull) and install, bleed the brakes and start er' up and drive it home?? If these two run on ...
Started 3 days, 18 hours ago (2009-11-09 00:49:00)
by ncoons22
SAS S10 Woods Beater Build, kickin the idea around. Hey guys, got a few questions about a recent idea i had. Lookin for some thoughts. OK, so here I have my 93 S10 4x4 std cab long bed, with a 4.3 tbi and an auto trans. the truck only has 104,000 original miles on it. i have been trying to sell it, as i no longer really need it. however, the fact of the ...
Started 1 day, 18 hours ago (2009-11-11 00:46:00)
by dmix48
hello friends, thanks for hearing my problems! First time here, hope to share in the years to come as I restore my S10. I've got a 92 4x4 with a 4.3 and TBI. Recently replaced the engine, o2 sensor, knock sensor, idle motor, and all the rubber and tune up stuff that goes with a new motor. The Truck runs decent, though not great (acceleration idle etc), and eventually I get a check engine...
Started 5 days, 18 hours ago (2009-11-07 00:57:00)
by socal_dave
I pulled this weber carb off of my 89 yj 4.2L, it ran great but I've installed the howell tbi, so carb goes to ebay. BUT, I can't figure out what it is, I THINK it might be a 38 DGES but I'm not sure.. It has a few markings: on the front: a number 1 with a circle around it and Made in Spain on the passenger side: ???A3 (not sure what the ? letters are) M3442 On the rear: ...
Started 1 day, 17 hours ago (2009-11-11 01:54:00)
by ᴪMikeᴪ
I have an 89 s10 4x4 5 speed standard 2.9L TBI with about 187000 miles. engine runs great n will last another 40-80,000 miles at least. eventually i’m gonna put a new tranny and 305 in it but till then, i wanna give it some more hp and torque cheaply. i live in evanston, wy and whenever i take it on i80 towards rock springs; i have to max out the speedometer just to climb the two sisters doing 50...
