1988 gmc s15 has injector pulse no spark - 1988 GMC S-15

SOURCE: what is the firing order for an 89 gmc s15 2.8

Hello cman0906: My name is Roger and I will answer your question. The fire order is 1 5 6 4 3 2. See picture. Please rate the answer you recieved. This way we know your answer was correct. Should you need further halp please just ask. Thank You for using Fix Ya. Roger

SOURCE: 1990 gmc 6500 topkick with no spark or injector pulse

You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.

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ZJ Limited

• 17989 Answers
• Posted on Oct 05, 2009

SOURCE: firing order for a 1986 gmc s15

FIRING ORDERS

To avoid confusion, ALWAYS replace spark plug wires one at a time.

The most important thing to remember about the removal and installation of a distributor, cap or spark plug cable is that all wires MUST be labelled before they are disconnected. Keep in mind that these figures depict a firing order where the distributor cap terminals are relative to EACH OTHER only and they do not necessarily depict the tower positions in relation to the rest of the engine. This is true because any distributor which has been removed and reinstalled may have been installed with the No. 1 spark plug tower at any position (360 degrees) in relation to the rest of the motor, as long as the rotor aligned to the No. 1 tower when the No. 1 cylinder was at TDC of the compression stroke (valves closed, ready for the plug to fire). As long as the remaining wires were connected in the correct firing order sequence (depending on direction of distributor rotation) the engine will run. DO NOT EVER remove more than one wire from the distributor cap at a time unless you tag ALL wires and towers to assure proper installation.



Fig. 1: 1.9L engine . Firing order: 1-3-4-2 . Distributor rotation: counterclockwise



Fig. 2: 2.0L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise



Fig. 3: 2.5L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise



Fig. 4: 2.8L engine . Firing order: 1-2-3-4-5-6 . Distributor rotation: clockwise



Fig. 5: 4.3L engine. Firing order: 1-6-5-4-3-2 . Distributor rotation: clockwise

I hope help you with this (remember rated this help) Good luck.

SOURCE: replace u joint on GMC S15 pickup

You'll need a bench vice for this. A few sockets help as well. Once you get the shaft off the truck, put a smaller diameter socket on one side and a much larger diameter socket on the other and sandwich in a vice. Compress vice to drive the U-Joint through shaft (smaller socket will drive the one side through the other with the much larger socket). Installation is the reverse of removal.

SOURCE: i think i messed up my spark plug pattern...first

Firing order is 1-2-3-4-5-6..Cylinders are 1-3-5 Front to back on the LEFT SIDE and 2-4-6 Front to back on the RIGHT SIDE, as your standing at the fan looking at the transmission. Here is a picture:

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