My 1994 Ford F150 4.9 randomly cuts off while driving or in neutral in driveway. How do I fix this?

80

Asked by Nov 10, 2013 at 08:49 AM about the Ford F-150

Question type: Maintenance & Repair

I have had a fuel pressure test done and
negative result. I tested tfi module to find
out that's fine. I replaced distributor cap,
plugs and wire and button in dis
cap...whenit

16 Answers

1,275

Check battery altenator and throttle positions sensors

1 out of 1 people think this is helpful.
80

Just put new alternator and battery in 3 months ago but I will check throttle position sensors first. Thank you for tip

90,595

Have you had the codes checked? It still sounds like an ignition system intermittent problem. If there is an IDM code then replace the distributor pickup coil and the ignition module.

80

The code will only show if it stalls while hooked up I think.I repaced ignition switch.had fuelpressure test done.replaced plugs wires and dis cap.still stalls.the stalling happens everyday but is random with no shaking or chugging. Truck runs great till it stalls. Then you have to wait 2 to 10 mins to start again

3 out of 3 people think this is helpful.
80

Oh and I had ignition mod tested it tested fine

90,595

Ford OBD 1 will have a memory that will store a code. You have just described the classic Ford ignition module failure. Did the place you had it tested do a heat stress test on the module?

80

Not sure but I will find out. I drove a couple miles this morn it was fine got home and let it idle in driveway 2 mins later it stalled. Its a 60 dollar part so I will take it back and have it done again

80

Tennisshoes as far as test goes he said he tested it 4 times to make sure it warmed up and its fine. But I don't know if that Qualifies as heat stress test

80

If anybody is out there I replaced ignition module. Egr valve position sensor. Throttle body pos sensor. Now I have check engine light and still no luck with fixing stalling problem..Does anyone have any more ideas. GOING CRAZY!!!

1 out of 1 people think this is helpful.
90,595

The only thing I can think of now is the distributor pick up coil going open when it gets hot.

1 out of 1 people think this is helpful.
80

Ok tennis. I had a ford guy tell me the iac valve after I told him everything I've done but he did sound surprised when I told him I hadn't changed coil yet. So today is change iac change out coil and cross fingers.haaa will report back after. Thank you sir!

1 out of 1 people think this is helpful.
80

No luck. All these things I've done haven't worked, but I'm not crazy anymore I just can't stop laughing..

90,595

Ok try this: Buy a test light an LED is the preferred for this test but a normal one will work, run vehicle until it fails, immediately unplug the coil and put in the test light in it's place and crank engine and watch for a flashing light while cranking, if no light then the ignition module is still suspect, if you have a flashing light then coil is suspect. You may have to be this a few times just make sure.

2 out of 2 people think this is helpful.
80

Thanks tennis I will check this out.

80

Ok tennis my pip circuit in distributor was bad...So I replaced my distributor because circuit is in it..no more stalling.Thanks for yoyr help!

2 out of 2 people think this is helpful.
80

Oh and oreillys was the only place I could find that had the obd1 to test my old truck..would have saved me time and money if I knew that at beginning.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 209,413 nationwide F-150 listings starting at $1,499.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,660
#2 dandyoun
dandyoun
Reputation 4,300
#3 tennisshoes
tennisshoes
Reputation 2,680
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,757 Great Deals out of 167,465 listings starting at $1,800
Used GMC Sierra 1500
836 Great Deals out of 66,319 listings starting at $1,995
Used Dodge Ram 1500
429 Great Deals out of 11,320 listings starting at $1,000
Used Ford F-250 Super Duty
354 Great Deals out of 47,670 listings starting at $1,795
Used Toyota Tundra
474 Great Deals out of 33,286 listings starting at $3,305
Used Toyota Tacoma
485 Great Deals out of 39,056 listings starting at $2,900
Used Ram 1500
909 Great Deals out of 113,527 listings starting at $6,396
Used Ford Mustang
368 Great Deals out of 46,982 listings starting at $1,500
Used Ford F-250
471 listings starting at $3,975
Used Nissan Titan
181 Great Deals out of 18,435 listings starting at $3,995
Used Chevrolet Colorado
229 Great Deals out of 23,555 listings starting at $2,200
Used Ford Explorer
815 Great Deals out of 74,887 listings starting at $750
Used Chevrolet Tahoe
559 Great Deals out of 27,464 listings starting at $999
Used Ford Ranger
194 Great Deals out of 6,035 listings starting at $1,299
Used Jeep Wrangler
267 Great Deals out of 18,638 listings starting at $2,995