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

1,295

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

92,535

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

92,535

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.
92,535

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..

92,535

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 205,275 nationwide F-150 listings starting at $1,499.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,860
#2 dandyoun
dandyoun
Reputation 4,360
#3 tennisshoes
tennisshoes
Reputation 2,740
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,693 Great Deals out of 174,329 listings starting at $1,250
Used GMC Sierra 1500
809 Great Deals out of 67,649 listings starting at $2,484
Used Dodge Ram 1500
471 Great Deals out of 11,116 listings starting at $700
Used Ford F-250 Super Duty
344 Great Deals out of 46,767 listings starting at $1,895
Used Toyota Tundra
428 Great Deals out of 34,114 listings starting at $3,200
Used Toyota Tacoma
535 Great Deals out of 40,527 listings starting at $2,495
Used Ram 1500
932 Great Deals out of 113,430 listings starting at $6,386
Used Ford Mustang
454 Great Deals out of 45,522 listings starting at $1,999
Used Ford F-250
470 listings starting at $3,475
Used Nissan Titan
175 Great Deals out of 19,487 listings starting at $3,000
Used Chevrolet Colorado
215 Great Deals out of 24,157 listings starting at $2,495
Used Ford Explorer
947 Great Deals out of 72,287 listings starting at $1,499
Used Chevrolet Tahoe
567 Great Deals out of 28,763 listings starting at $1,699
Used Ford Ranger
194 Great Deals out of 5,816 listings starting at $1,650
Used Jeep Wrangler
280 Great Deals out of 18,051 listings starting at $2,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.