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2552 posts · Joined 2007. #1 · Jul 18, 2009 (Edited) OK. Still installing the TBI. Couple of quick questions..... 1. The wiring harness has two wires that go to the check engine light. What have you guys been doing for this? I would like to find a nice aftermarket check engine light, but did a search on the net with no luck.With a small pipe cutter, we pulled the lines away from the frame far enough to allow the cutter room to move. Once the supply line was cut, we capped it and cut the return line per the instructions. We mounted the new electric fuel pump, filter and reconnected the two lines to the new throttle body.89 4.2 Howell no spark. A friend of mine left his jeep at my place because it wouldn't start after a day of wheelin. Ran perfect on Saturday, Went to start it Sunday and was a no spark. It's an 89 with a 4.2 and a Howell injection on it. Also has a newer looking distributor on it (the Howell kit is a new thing to me).Part # K247A Universal V8 EFI Kit that inludes a new GM Electronic distributer, coil, and coil jumpers for complete computer controlled ignition for most GM V-6, Small Block, and Big Block V-8 applications. Includes intake manifold adaptor for TBI unit, fuel pump, wiring harness, ECM, and all sensors. ECM installs under dash. High pressure…Part # TBI7747 For GM throttle body applications, both single and twin TBI systems, as well as production, retrofits. These are the ECM's commonly used in 1987-1992 pickups and vans which match our TBI harnesses. These are used components that have been tested and carry our 6 month guarantee.With a small pipe cutter, we pulled the lines away from the frame far enough to allow the cutter room to move. Once the supply line was cut, we capped it and cut the return line per the instructions. We mounted the new electric fuel pump, filter and reconnected the two lines to the new throttle body.By Howell EFI. Marine City, Mich.— Howell EFI is known widely in the industry for its easy-to-install GM-based EFI and TBI kits for Jeep CJs, most of which are 50 state emissions legal. Now available are Howell's Ford Inline 6 and V8 TBI Kits, ideal for converting carbureted first-generation classic (1966 to '77) Ford Broncos to TBI.- This kit does not have a California E.O. # (exemption order) - In the state of California this kit can be installed on 1975 or earlier vehicles only For converting an I6, V6 or V8 engine from carburetor to throttle body fuel injection. Uses remanufactured GM throttle body appropriate for engine size. Operates GM…Howell EFI T-Shirt $ 25.00. Select options. Complete TBI Kits. #HF400 – Ford 400 CID TBI Conversion Kit ... 454 & 502 TBI Kits. #F219 – Electric Fan Control Kit ...So here we start on an install of TBI system from Howell. The Jeep is a 1986 CJ-7. What I was not fully aware of. Was the amount of splicing and other related issues. These will be fixed as I go along. 4. Owner/ Operator www.autotechsonora.com. Personal website: www.coppersjeep.com.Bill and his son, Matt formed Howell Engine Developments in 1988, with a contract from Chevrolet to build EFI wiring harnesses for their Buick V-6 powered Indy Light series cars. Soon, word had spread that the legendary Bill Howell had formed a new company specializing in electronic fuel injection, and he was contacted by Hot Rod magazine (who ...While idliing, adjust throttle stop screw to increase base idle rpm as desired. 7. Turn engine off. 8. Reconnect idle air control connector. 9. This will complete the adjustment. PER the Howell installation manual ( Note the Howell kit does NOT control your timing ) Like.That's odd because the pressure leading to the TBI shows 13PSI (yeah, of air) Hmm, quick trip to the gas station, three gallons in the tank, tap B5 to prime, and it started (and runs). The other frustration was I bought a tach filter from Howell thinking mine was bad. I had a tach signal leading to the tach filter but nothing on the other side.- This kit does not have a California E.O. # (exemption order) - In the state of California this kit can be installed on 1975 or earlier vehicles only For converting an I6, V6 or V8 engine from carburetor to throttle body fuel injection. Uses remanufactured GM throttle body appropriate for engine size. Operates GM…- This kit does not have a California E.O. # (exemption order) - In the state of California this kit can be installed on 1975 or earlier vehicles only For converting an I6, V6 or V8 engine from carburetor to throttle body fuel injection. Uses remanufactured GM throttle body appropriate for engine size. Operates GM…Part # K247J Kit converts any V-8 Jeep to ECM controlled throttle body fuel injection. Remanufactured GM throttle body adapts directly to 2 or 4 barrel intake manifold, replacing carburetor. Contains all necessary sensors, wiring harness, ECM, and electric fuel pump. Runs with stock Jeep distributor. Great for serious four-wheeling. For emission 50 state emission…Gotta put the computer in tomorrow. And a new tach to help get this thing idling at the right rpm's. '85 CJ7, 258 4.2 Howell TBI, NP435, twin sticked Dana300, 4.56 Yukon chromoly: Rear20-extra thick tubes, shaved,trussed,discbrakes,ARB: Front30- flipped tierod,Detroit EZ locker, warn hubs: 3.5" BDS YJ springs and booster, 35" Trxus M/T's, rhino ...Complete review and tips for installing the Howell fuel injection system on a 1990 Jeep Wrangler YJ using Chevrolet throttle body and Howell-modified computer.Plenty of power and torque for California Wheel'n, easy to swap (I've been told the tranny bolt patterns are the same on the 4.0L and 4.2L.) and fuel injected. It's amazing how much money you could dump into a 258. An engine rebuild with the Mopar MPI kit would cost around $4000.The HOWELL Jeep EFI kit uses a new General Motors throttle body fuel injection unit from the 4.3L V-6 engine to replace your existing Jeep carburetor. It is fitted to the stock Jeep intake manifold with an adaptor supplied in the kit, and controlled by a GM vehicle ECM (computer) using a coolant sensor, MAP (Manifold Absolute Pressure) sensor ...

This should have dropped the pressure to zero. Same result, code 45, backfiring and missing at 1800 rpms. Reading other threads, it seems some folks have corrected this condition by reducing fuel pressure. Unfortunately this particular howell version doesn't have an adjustable fuel pressure regulator.A TBI wiring diagram will show how all of these components are connected together. When diagnosing an issue related to a TBI system, the first step is to consult the wiring diagram. This will provide an overview of the entire system and help you pinpoint any potential problems. ... Howell Tbi Throttle Body Fuel Injection Installation Jeep Cj ...More consistent tune and improved cold starting for Gen I and II vehicles. Marine City, MI (September 14, 2022) – Howell EFI, recognized as a leading supplier of EFI and TBI systems for Jeep inline 6 and GM small block kits, now offers TBI kits to convert any first or second Generation Dodge Ramcharger or Plymouth Trailduster to throttle …Air France, Delta and KLM are offering discounted business-class flights to a variety of European cities from December to September. As the year winds down, you may be thinking abo...

YJ Howell TBI guys. Jump to Latest Follow 2K views 9 replies 5 participants last post by CSP Apr 1, 2011. D ...I think cutting, stripping, soldering, and shrink wrapping would be difficult in that space. I was considering the direct connect to the battery with a toggle switch, but would rather hardwire it somewhere. '85 CJ7, 258 4.2 Howell TBI, NP435, twin sticked Dana300, 4.56 Yukon chromoly: Rear20-extra thick tubes, shaved,trussed,discbrakes,ARB ...…

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