1988 Nissan Sentra no start

Tiny
PRORACER88
  • MEMBER
  • 1988 NISSAN SENTRA
Electrical problem
1988 Nissan Sentra 4 cyl Two Wheel Drive Manual 87k miles

I have a Nissan Sentra '88, no start, no fuel pulse, no spark, no LED's at ECU, no fuel pump coming on. Replaced timing belt, dist. With known good one, ECU with known good one, coil, checked grounds, replaced neg. Bat. Cable, checked fuse box connections and relays. Still have same problem happening. Have replaced fusible links at battery. No power to distributor. Still no change. Need help! Thanks a bunch in advance.
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Thursday, December 27th, 2007 AT 6:21 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Do you have battery voltage on the positive terminal of the coil? Did you check all the fuses?

Below test all the relays


http://www.2carpros.com/forum/automotive_pictures/12900_relays_1.jpg

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Friday, December 28th, 2007 AT 12:35 AM
Tiny
RASMATAZ
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Do this make a jumper wire put a 7.5 in line fuse in it and connect to the batt. Positive to the coil positive-Crank engine over-while looking for spark at the coil wire disconnected from the distributor to ground. Do you have spark?
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Friday, December 28th, 2007 AT 12:43 PM
Tiny
RASMATAZ
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From: proracer88
To: rasmataz
Posted: Fri Dec 28, 2007 12:35 pm
Subject: 88 Nissan Sentra
I didn't mention that yes, I do have power to both sides of the coil. Nothing coming out to the dist. Though. No power to distributor either.

Stick a test light on the neg. Side of the coil while cranking it over is the test light blinking? If not investigate inside the distributor could be the crank angle sensor/pick-up coil.
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Friday, December 28th, 2007 AT 2:08 PM
Tiny
RASMATAZ
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From: proracer88
To: rasmataz
Posted: Fri Dec 28, 2007 2:51 pm
Subject: 88 Nissan Sentra
I used a test light on the wires to the coil and I have power on both, neither one blinks though, just steady. I don't see how the coil/dist. Effects the no fuel pulse or power to ECU. I was able to jump the relay wiring to get fuel pump to turn on, but still no injector pulse. I have no LEDs lighting up on the ECU at this time either.

If the test light is not blinking that means the primary circuit of the ignition is not switching -could be a problem with the pick-up/CAS-also if the computer don't see an ignition reference signal it will not activate the injector-it has no way knowing whether the engine is turning and it needs fuel
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Friday, December 28th, 2007 AT 3:00 PM

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