How can I pass smog?

Asked by Jul 13, 2016 at 05:32 PM about the Ford F-150

Question type: Maintenance & Repair

Install new injectors, O2 sensor, MAP sensor, PCM. Yet will not pass smog,
high HC from tail pipe. Prior to installing new parts , truck was taken to
diagnostic shop.

4 Answers

18,775

Catalytic converter... if it's bad changing out sensors does nothing.

1 out of 1 people think this is helpful.
11,025

Wow... a parts change attack! HC is hydrocarbons, It could be the EVAP system which state are you in? let's assume not Cali...Please let us know the name of the "Dianostic shop" Post It. I would check the catalytic converter first! What year f150 and which engine? most run multi HEGO sensors.. with the correct gear this is easy to isolate and correct the cause of the emission. Did they provide a print out of HC Co Nox Co2? How many PPM over is it in HC

1 out of 1 people think this is helpful.
59,095

Excessive hydrocarbons (HC) is usually an engine that's running too hot or too lean. HTH. -Jim

1 out of 1 people think this is helpful.

I live inc Cali. Name of Diagnostic Shop is AV Auto Clinic. I have a 1989 F150, 4.9 L, 5 speed manual trans. Truck has only one O2 sensor. Yes I have a printout. Max PPM is 96(15 mph, 1586 rpm), GP 305, Meas 489. CO% is Max 0.68 (same mph, rpm), GP 1.98, Meas 8.12. At 25 mph, 2443 rpm, Max PPM 69, GP 255 Meas 321. CO% (at same mph, rpm) Max 0.61, GP 2.17, Meas 7.58

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 208,987 nationwide F-150 listings starting at $1,200.

ZIP:

Search Ford F-150 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,720
#2 dandyoun
dandyoun
Reputation 4,130
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,603 Great Deals out of 152,727 listings starting at $1,500
Used GMC Sierra 1500
1,002 Great Deals out of 60,427 listings starting at $1,299
Used Dodge Ram 1500
517 Great Deals out of 13,131 listings starting at $1,800
Used Ford F-250 Super Duty
474 Great Deals out of 43,396 listings starting at $2,750
Used Toyota Tundra
659 Great Deals out of 28,449 listings starting at $2,798
Used Toyota Tacoma
718 Great Deals out of 32,218 listings starting at $2,750
Used Ram 1500
1,320 Great Deals out of 115,829 listings starting at $6,500
Used Ford F-250
563 listings starting at $1,342
Used Ford Mustang
565 Great Deals out of 43,003 listings starting at $1,699
Used Ford Explorer
1,107 Great Deals out of 72,088 listings starting at $1,000
Used Nissan Titan
257 Great Deals out of 15,863 listings starting at $3,000
Used Chevrolet Tahoe
869 Great Deals out of 28,110 listings starting at $1,700
Used Ford Ranger
207 Great Deals out of 6,874 listings starting at $1,595
Used Chevrolet Colorado
325 Great Deals out of 17,982 listings starting at $1,995
Used Jeep Wrangler
527 Great Deals out of 18,473 listings starting at $2,500