Question about 1987 Toyota 4Runner

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1987 4 runner 22RE start and dies.fuel pressure is good/injectors has power but no pulse

Start and dies. New engine/new insjectors/new igniter

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  • Toyota Master
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No pulse is the crank sensor or the ECM.

Posted on Apr 05, 2015

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Posted on Jan 02, 2017

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What causes o low injector pulse


Is that static pressure with key on, engine off? Or engine running pressure? Both should be near 60, usually key on, engine off pressure will be about 3 or 4 psi higher.
If it runs good after starting, the injector pulse must be good. No reason why starting and running pulse should be different. Only difference is when running, fuel pump power is kept on by the oil pressure switch, whereas in starting, the fuel pump relay keeps the pump on. Very unusual, let us know. Measure voltage at one of the injector's power wire with key on. It should be battery voltage or very close.

Aug 22, 2015 | Cars & Trucks

1 Answer

Fitted cranksensor injector loom still not starting ?


You would put on a new crank sensor because the ignition system won't work, it gives no spark. So now do you have spark at a spark plug wire end? A blue consistent spark? Probably good ignition system, as long as all spark plugs get a spark.

One thing you always want to check with no start is the fuel pressure. Turning the key to on should turn the fuel pump on and put pressure in the fuel rail at the engine. Autozone and maybe others rent or loan fuel pressure gauges. Multi-port injection systems have high pressure specifications, around 40 psi normally. That is what the injectors require to spray out fuel when they pulse and open the nozzles.

With the injector circuit, the first thing to check is if each injector has power to it with the key in ON. One power wire and one ground wire goes to each injector. The power wire is from a fuse that is powered with key on or key in start, and then it is spliced to all of the injectors. The injector grounds all run into the engine computer, where the circuit can be internally grounded for a split second and cause the injector to pulse. But anytime the key is on, the injectors have steady voltage available to them.

Mar 13, 2015 | Cars & Trucks

1 Answer

Have 87 jeep comanche, have been told it has a cam shaft sensor, to keep it in time , if so where is it located? the engine is a 4.0


The cam sensor is located in the distributor.check the cylinder compression, check for ignition spark, check for fuel injector pulse and fuel pressure.

Aug 06, 2012 | 1987 Jeep Comanche

2 Answers

My lumina mini van wont start i spark i fuel pressure. i dont have a check engine light on


If you have spark and fuel pressure, then the most likely cause of the problem is that there is no injector pulse to fire the fuel injectors, and the signal for the injector pulse is generated from the ignition module that is located inside of the distributor and it might be malfunctioning, or you might also have a loose wire connector or a faulty computer (ECU/ECM-PCU/PCM).

You can remove the ignition module from the distributor and have it tested for free at most auto part stores.

If you replace the ignition module with a new one it should come with some silicone grease or a die-electric compound and be sure that it is with the new module when you purchase it. The silicone grease or die-electric compound must be used to completely coat and cover the metal contact surface under the ignition module where it mounts to the distributor, and do not leave any of the metal contact surface of the ignition module un-covered by the grease or compound because it is a heat sink and the module will over-heat without it, and also be careful that you do not over-tighten the ignition module or it will be damaged.

Be sure that you clean the mounting surface for the ignition module inside of the distributor before you install the ignition module.

Jun 07, 2010 | 1993 Chevrolet Lumina APV

1 Answer

I have a 1987 toyota 4x4 with a 22re 4 cyl efi with a brand new head on it it starts and runs perfect when its cold but it wont start when its warmed up i can hold the key in the start position and i can...


Check ur battery, check the engine radiator hose and the condition of radiator, and always check the water. if the problem is still there check the igniter plug if there's carbon presence around, if u found its burned, its better to change. do this troubleshooting first. it will do to trace the proble. k good am

Dec 20, 2009 | 1987 Toyota Pickup

3 Answers

1987 E.F.I. 4 runner wont start cold, a little starting fluid wakes it up but immediatly dies.When it starts it runs perfect,good fuel and filter. Temp sensor???


May have low fuel pressure or an alot of these older cars a defective coolant temp sensor can give you hard starts

Dec 16, 2009 | 1987 Toyota 4Runner

2 Answers

I have hyundai accent 2003. While driving the engine died. Checked fuses,ignition,fuel pump(don't know if the pressure is right),starter is starting ok.


#1. Scan for trouble codes. If any, record them and let us know which ones they are.
#2. Connect a fuel gauge to the fuel delivery line at the engine... try to start the engine while monitoring fuel pressure... if there is fuel pressure (approx 35 to 50 lbs), the problem is elsewhere.
If no fuel pressure, check fuel pump relay, fuse, wiring to fuel pump connector (power & ground - use 12volt test light). If power & ground are present, problem is the pump (fuel filter is attached to the fuel pump inside the tank).
#3. Check injectors for injector pulse, check ignition coils for spark to spark plugs.

Sep 06, 2009 | 2003 Hyundai Accent

1 Answer

Wont start


Make sure that you're getting spark. A very common thing on these engines are coils going bad. If you can verify spark, check to make sure you have an injector pulse. As you rotate the engine, look inside of the throttle body and make sure that you see fuel pulsing into the engine. You can still have good pressure but you don't have an injector pulse, the fuel still cant get into the engine. You can use a test light as well to test for an injector pulse. One wire going to the injector will have constant power and the other will blink when the engie is rolled over. Does it start if you spray starting fluid into the throttle body? If it does, it's a fuel delivery problem. Again be sure you have spark from coil to distributor and plugs. You can remove the ignition module and take it to NAPA and they have a module tester. Have them test the module several times not just once. This will eliminate the possibilites of an intermitted problem. Let me know how it does. tiqautoperformance@live.com

Aug 21, 2008 | 1989 Chevrolet C/K 3500

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