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1998 Honda prelude no injector pulse. Yes fuel! Yes spark! Spray the intake it starts briefly.

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: no injector pulse

hello sir,

absence of ground pulse means there is some kind of shorting circuit in your control circuit.

which can make the ground pulse to get shorted there itself preventing it to reach the circuit properly.

thank you

don't forget to rate the solution

good day

Posted on May 27, 2008

  • 84 Answers

SOURCE: wont stsrt

sounds very much like the coolant temp sensor
, this tells the pcm that the engine is cold, sometimes they fail and tell the pcm the car is at -40 degrees, the pcm then tries to compensate by keeping the injectors open for too long flooding the engine. the part is inexpensive, and normally easy to replace. It can be checked with a scan tool, or a volt/ohms tester,

Posted on Dec 22, 2008

  • 383 Answers

SOURCE: Little to no injector pulse only when starter is engaged

95-97 Maximas had a problem where condensation from the A/C would accumulate in the a/c evaporator case from the drain becoming restricted or blocked, When this would occur, condensation would drip onto the ECM and a problem would develop with misfire and/or starting. I would look at the ECM where the harness connects to it for corrosion problems. If you find it, there is a chemical spray which can be used to clean the terminals and/or you can clean them, although it is time consuming and difficult to due because of how small the terminals are. After things are cleaned up, lightly coat the connections with a dielectric grease. This will prevent electrolysis.I believe you can buy these at Radio shack and possibly at an automotive parts supplier.
Also a drop in voltage during the cranking phase will cause a weak spark. Your ignition is what pulses the injectors. It takes a minimum of 9.6 volts, but ideally you want at least 10.5 or more during the cranking phase if you want to get a spark worth anything. Check the voltage on the primary side of the coil while cranking the engine.
I'll watch to see if things work out for you, let me know. ....mybunkey

Posted on Apr 18, 2009

  • 3 Answers

SOURCE: No start Had Codes p0340 & p0345 both are cmp

The crankshaft position sensor works in tandem with the camshaft ones, and they sometimes fail together. I've seen it written that the crankshaft one should be changed WITH the cam ones. They're kinda expensive, but the no spark/injection thing suggests that may be your issue. <!-- from fixya rte -->

Posted on Aug 14, 2010

  • 67 Answers

SOURCE: 2002 nissan altima, no spark, no injector pulse, no start

nissans have an issue with crank angle positioning sensor, you must remove it and check for resistance, it definetly sounds like it cause crank sensors sometimes work when cold then shut off.

Posted on Feb 18, 2011

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good luck I hope this helps.

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