0 Members and 1 Guest are viewing this topic.
Check the CTS (coolant temp sensor), maybe replace it. TPS not ajdustted prperly may be an issue. Air injection out of whack, check diaphrams and vacuum routing. And then there's the Cold Start Circuit, if the "timer" is bad or the injector is leaking it can cause a rich condition.Streaking or leaking injectors.......And my favorite! Ground, or earth connections. Make sure all your grounds are paint, rust, and dirt free! so many problems arise from poor electrical connections.
There are 2 sensors on the front of the lower manifold, just under the T-stat outlet. One has a single wire and the other has the weatherproof 2 wire connector. The sensor you'd be concerned with is the weatherproof connector.Are you sure the unjectors are of the proper flow rate?One thing I left off the list to check is the fuel pressure.I always say it, and now here it comes again. Chances are, it's something simple.
Have you checked for trouble codes?
Yes, i was getting bad 02 previously so i changed that. Now im at a single blinking check engine light. Here is a little more background. Truck has 84-88 engine harness and ecu. Previous owner had put in a 22r and then added injection. The motor blew so i put in 22re thinking it was the same thing.
Was the 22re you used complete with all the sensors? If so, was it from an '84-'88 truck/runner, or was it from a later model? With the 22re, you have 3 separate model year runs, and the ecu, injectors, sensors., etc., are not interchangeable
So the PO had put EFI on the 22R. Was the EFI for the 22RE? Or did the PO put in an aftermarket fuel injection system? As far as the 22R/RE engine, the only differences are really are between early and late. The '85-'95 is pretty much interchangeable from carb and EFI. Now if the PO installed an early electronics set anf you put in a late block with late sensors there could be issues. As an example, using late injectors with early electronics, the early injectors were a lower flow rate and required a longer open duration. With late injectors in that system, having a higher flow rate, would put more fuel into the engine than the early injectors, rich. So now I'd say make sure all your components are compatible with each other. Toyota does have a lot of pieces that can "mix-and-match" but you do need to know what works where. Wish I could be of more help.
Was the 22re you used complete with all the sensors? If so, was it from an '84-'88 truck/runner, or was it from a later model? With the 22re, you have 3 separate model year runs, and the ecu, injectors, sensors., etc., are not interchangeableThe generations for the ecu, injectors, sensors, etc., are '84-'88, '89-'91, and '92-'95.
Just gotta do the research to find what will work where since the parts are becoming more rare by the day.
Is the new engine stock? With the stock electronics it should be good to go. The previous owner may have increased the injector size to make up for the added displacement, that would definately have an effect on you fuel mixture. Can you verify the ECU application and year? 2 or 3 plugs? Pin quantity per plug? Part number? Injector color coding? What color are the injectors? Solid or black stripe on the injector body plug? Plug shape. oval or square?And I always ask, your location. No address or anything that precise, just general. Maybe there would be someone close enough to pop by to lend a hand.
Pull a plug off an injector and see what color it is, note whether it hes a black stripe or not, and the shape of the plug.
Started by Birfailed Engine
Started by yotaismygame Toyota Pickup/4Runner Tech 1979-95
Started by lilbuddy « 1 2 3 4 » Engine
Started by greenjacob « 1 2 3 » Toyota Pickup/4Runner Tech 1979-95
Started by remhex Toyota Pickup/4Runner Tech 1979-95
Author
Topic: 22re runs rich untill i pull a vacum hose (Read 1587 times)
