fleetwoodguy79 Posted November 17, 2004 Report Posted November 17, 2004 What is the difference, if any, between the 91-93 injectors, 94-95, and 96-97 injectors for the DOHC? Can I use 96 injectors in my 94 motor? Thanks! Quote
Aaron Posted November 17, 2004 Report Posted November 17, 2004 You can use ANY year DOHC 3.4 injectors in any year DOHC, they are all compatible. The 1991-93 came from the factory bad. They were loud(clicking), and they made the car stall out after a few thousand miles(More-so on the 5-speeds, but I have heard of an auto stalling as well). GM made a recall for them, and my guess is about 60% got the recall. And I'd say of the 40% remaining, 20% have had their injectors changed due to normal maintenance. For the last 20, life sucks. The ones you buy from an auto store for a 91-93 won't make the car stall, but they will still be loud(I don't notice mine unless my hood is up). The 94-95 were the same as the earlier years, but they fixed the stalling. IIRC they are also loud. The 96-97 were rated 1# smaller(no big deal on a stock or slightly modded motor), and they fixed the stalling and run near silent. I have a srt of 6 of these, but I haven't had time to put them in. I would like to however, considering mine are loud and the car stalls out. Quote
fleetwoodguy79 Posted November 17, 2004 Author Report Posted November 17, 2004 you are AWESOME! That is EXACTLY what I needed! Quote
digitaloutsider Posted November 17, 2004 Report Posted November 17, 2004 you are AWESOME! Are we talking about the same Aaron? Quote
Vegeta Posted November 17, 2004 Report Posted November 17, 2004 Where did you find that the 96 injectors are 1# less flow? Quote
Paul GTP Posted November 17, 2004 Report Posted November 17, 2004 This should help, it an orginal service bulletin File In Section: 6E - Engine Fuel & Emission Service Bulletin I I I Oldsmobile PONTIAC Bulletin No.: 67-63-03 Date: June, 1996 Condition Some owners may experience a phantom stall when the engine throttle is closed and high load demands are placed on the engine. Typically this is encountered when the owner is maneuvering in a parking lot at an idle speed with a closed throttle and placing a high load demand on the engine such as power steering. The engine could stall but would restart immediately. This type of stall is very difficult to duplicate. Correction A new fuel injector, part number 25170699, has been released for service to correct this condition. The new fuel injector is designed to flow richer at a low pulse width. Before replacing the injectors, remember to check the following: 1. Minimum air rate setting. 2. Vehicles equipped with manual transmissions: check crankshaft end play, refer to bulletin 236007. X - RPO LQ1) 3. Power steering pressure switch. 4. Make sure the latest calibration is installed in the vehicle, refer to bulletin 336506. Parts Information Parts are currently available from GMSPO. r Part Number Name I jector Asm - M/Port fue!] [ 6 25170699 In Warranty Information For vehicles repaired under warranty, use: Labor Operation Labor Time J5650 Injector, fuel - replace Use published labor operation time. Subject: Phantom Stalls at Closed Throttle and High Engine Loads (Replace Fuel Injectors) Models: 1991-93 Chevrolet Lumina 1991-93 Oldsmobile Cutlass Supreme 1991-93 Pontiac Grand Prix with 3.4L Twin DOHC V6 Engine (yIN Quote
Manny Posted November 22, 2004 Report Posted November 22, 2004 Hey Aaron, I've kinda got the same question, except what I would like to know is can you use the injectors from a 96 3100 in a 3.4? It is extremely hard to find a 95+ 3.4 engine around here (none) of the yards have them. I experience the same stalling issue. Quote
herb427sc Posted November 22, 2004 Report Posted November 22, 2004 The 3.4 injectors are only compatible on any year 3.4 DOHC motor. The injectors for a 3100 motor are different. Quote
Go4DaMo Posted March 20, 2014 Report Posted March 20, 2014 how about fuel regulators...compatible? Quote
Go4DaMo Posted March 24, 2014 Report Posted March 24, 2014 When my LQ1 injectors are in need of replacement, are there newer injectors I can use? Quote
Tabitha Posted May 25, 2023 Report Posted May 25, 2023 Can I replace my 3.4 Pontiac Firebird fuel injectors with a 4.3 Chevy Silverado injectors? Are they interchangable? If not what is? Quote
White93z34 Posted May 25, 2023 Report Posted May 25, 2023 Wow, this thread is a blast from the past. Just for reference making a new thread would probably be better. This thread is... nearly 20 years old Short answer, probably not. Long answer, I don't know, but. I'd wager the rate is different between the 3.4 and 4.3, and I think most 4.3s had spider injecton or something weird. don't listen to me though 4.3s aren't my cup of tea. A quick poke around on the internet seems to indicate that most FWD 94-96 3100s are a direct replacement, though double check me on that one. pwmin 1 Quote
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