Why is my truck running so bad?

tstansbro
785

Asked by tstansbro Oct 01, 2012 at 09:41 AM about the 1988 Ford F-150

Question type: Maintenance & Repair

I own a 1988 Ford F150 with the 302. A while back it started running really shitty. Now I was wonderin' what it could be. When I start it, it idles horribly. It spits, sputters and even dies out every now and again. Now when I'm driving it, it does the same thing unless I open it up. Now I've tried replacing a few parts, the high idle sensor was one of them. It didn't work. I take the high idle sensor off and hold the tab thats on the back of that sensor enough to hold it to an idle and it runs fine. But it basically spits, sputters, dies out, ect. And if I open it up, the check engine light shuts off, otherwise its on all the time. Any advice would be great. I want my truck back to the way it was before.

Thanks!
Tyler

3 Answers

OJ
8,500

clogged fuel filter or line.

Josh50050
65

could have bad gas or the tanks lines filters and pumps could be gone to rust that could be really major or really minor

Tracy Hooks
14,375

Several things can contribute to the 302's running condition. From the sound of it, you probably have a vacuum leak. I don't know what a High Idle Sensor is and I've been a Master Certified Ford Tech many moons. Do you mean the IAC (Idle Air Control solenoid?) Check codes, check for vacuum leaks (the intake manifold gaskets, EGR and PCV hoses are notorious). This one requires diagnostics. You could throw money at it all day and never fix it.

Your Answer

Add photo

Related Questions

  • Why won't my truck start? 2 answers

    Truck was running great. Today try to start it and it would just click so I charge battery just clicks. I jump the truck. It runs. Turn truck off then back on. Just clicks. I've changed the ...

    1995 Ford F-150 XLT Extended Cab SB

    -

    Maintenance & Repair

  • Why won't my truck start? 72 answers

    My truck: 1995 Ford F-150 4.9 liter, 6-cylinder Manual transmission My truck will not start. When I turn the key, it only clicks. It does not turn over. This I know: Battery: Checked at NAPA and...

    1995 Ford F-150 XL SB

    -

    Maintenance & Repair

  • why truck won't start after it get hot maybe twenty minutes running 13 answers

    1990 f150 with 300 six. vehicle runs great, starts right away even after sitting up for three or four months. it' fuel injected. once you drive it for twenty, thirty minutes, it will not start. le...

    Ford F-150

    -

    Maintenance & Repair

  • why will my truck not start 23 answers

    I have a good battery, i have a solid connection with my starter solenoid (click, click) when i turn the key. i just changed my ignition switch, and my ignition key cylinder ( they needed to be change...

    1995 Ford F-150 XLT SB

    -

    Maintenance & Repair

  • Why won't my truck start 6 answers

    For the past year or so, I've had two 12inch subs and a 1200 watt amp in my 1994 ford ranger. Now why I put that in my truck, I dont know ,but anyways, it was connected directly to the battery (al...

    1994 Ford Ranger STX Extended Cab SB

    -

    Maintenance & Repair

F-150
Looking for a Used F-150 in your area?
CarGurus has 114,758 nationwide F-150 listings starting at $1,450.
ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 3,250
#2 dandyoun
dandyoun
Reputation 2,990
#3 Tracy Hooks
Tracy Hooks
Reputation 1,410
View All

Related Models For Sale

Used GMC Sierra 1500"
620 Great Deals out of 58,122 listings starting at $1,945
Used Jeep Wrangler"
359 Great Deals out of 41,508 listings starting at $1,800
Used Ford Mustang"
654 Great Deals out of 31,346 listings starting at $1,399
Used Ford F-250"
4 Great Deals out of 510 listings starting at $3,395
Used Ford Ranger"
254 Great Deals out of 6,194 listings starting at $1,500

Used Cars For Sale

2015 Ford F-150 For Sale
35 Great Deals out of 62,113 listings starting at $26,989
2014 Ford F-150 For Sale
148 Great Deals out of 9,364 listings starting at $16,998
2013 Ford F-150 For Sale
334 Great Deals out of 9,765 listings starting at $12,899
2012 Ford F-150 For Sale
279 Great Deals out of 7,166 listings starting at $10,990