Question about Nissan Altima

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Have 2000 nissan altima with transponder chip missing from key

I am a mechanic and have the above said altima at work, the car has fuel pressure, good fire, but no injector pulse, i the notice the key hap a large hollow in it and realized the transponder chip was missing. Would really like to fix the car for my customer but am not sure how to go about it, any ideas other than send it to the dealer would really be appreciated. Thanks, David

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  • Nissan Master
  • 975 Answers

Could put a resistor in the line at the switch,but without the old chip,can't tell how much resistance,maybe customer has a spare key?

Posted on Feb 16, 2012


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Posted on Jan 02, 2017

  • 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

  • 160 Answers

SOURCE: disable transponder chip keys

You have to measure the resistance across the key and get a resistor of the same value at radio shack and jump it across the wires at the security box, this way the security system thinks the key is always inserted. We did this with 1989 firebird some years ago and it worked great.

Posted on Jul 07, 2009

  • 752 Answers

SOURCE: How is a Nissan Transponder Chipped key

unfortunatly we cant do it it has to be done by dealer or would need the computer thatdownloads the key code but down my way home depot started selling these key fobs far more cheaper than the 150 dollrars the dealer wants

Posted on Feb 12, 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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Hello Jam mmmm,

I have seen products that allege this can be accomplished...

And frankly... IF COST WERE NO OBJECT...
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back down here in this vale of REALITY...
Your options are call a locksmith to where you are or
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If you get on AMAZON or eBay and check how little it would have cost to AVOID your current situation ... it would be MOST VEXING... my best cut charge = $6

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How is a Nissan Transponder Chipped key

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Hello . So your transponder key is broken ? If the transponder is missing or broken then the car will not start. The transponder is like a fuse in the key that must send a sig to the ecu and back to the ign system to allow vehical to run. Quinn , Arizona

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My 2000 Nissan Altima will falter when it gets warm. Months ago my mechanic cleaned the EGR and then two weeks ago, I changed it for a new one. He had cleaned the manifold saying the port at the manifold...

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