1998 nissan altima PO 300

Asked by Apr 07, 2010 at 09:43 AM about the 1998 Nissan Altima GXE

Question type: Maintenance & Repair

I have a 98 Nissan Altima that has intermittently give me a code PO300.  I have replaced the plugs, wires, distributor and cap.  Still has the same problem.  Don't know where to go from here.

3 Answers

105

well there could still be a number of things causing that. you could have a vacuum leak some where causeing the cylinders to lean out. listen for any sucking noise and if you cant hear anything try spray some starter fluid around intake seal and suck to see if the engines rpms increas at all.

1 out of 1 people think this is helpful.

I didn't think that it was a vacuum leak because it will run fine for awhile (long enough for the check engine light to cycle off) then start missing again.

5

I had a similar issue with a 94 altima. I narrowed it down to one cylinder by taking off plug wires until I found it, and changed the injector on that cylinder. It fixed it immediately, and a week later the next cylinder started. It was the injector also. It ran great for the next few months until I traded it in.

Your Answer

Add photo

Related Questions

Altima

Looking for a Used Altima in your area?

CarGurus has 84,825 nationwide Altima listings starting at $695.

ZIP:

Search Nissan Altima Questions

Nissan Altima Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,830
#2 FordNut
FordNut
Reputation 1,160
#3 Cassie Sapphire
Cassie Sapphire
Reputation 590
View All

Related Models For Sale

Used Nissan Maxima
430 Great Deals out of 25,098 listings starting at $1,500
Used Honda Accord
1,228 Great Deals out of 77,867 listings starting at $969
Used Toyota Camry
1,495 Great Deals out of 100,431 listings starting at $700
Used Honda Civic
1,155 Great Deals out of 66,086 listings starting at $1,500
Used Nissan Sentra
729 Great Deals out of 52,674 listings starting at $2,000
Used Toyota Corolla
1,397 Great Deals out of 68,393 listings starting at $988
Used Hyundai Sonata
965 Great Deals out of 49,865 listings starting at $700
Used Chevrolet Malibu
1,124 Great Deals out of 79,772 listings starting at $2,495

Used Cars For Sale

2017 Nissan Altima For Sale
30,369 listings starting at $15,310
2016 Nissan Altima For Sale
53 Great Deals out of 19,532 listings starting at $12,475
2015 Nissan Altima For Sale
406 Great Deals out of 10,270 listings starting at $8,500
2014 Nissan Altima For Sale
169 Great Deals out of 5,420 listings starting at $6,995
2013 Nissan Altima For Sale
200 Great Deals out of 5,964 listings starting at $4,500