93 f150 302 codes
Thread Starter
|
New User
Joined: Oct 2003
Posts: 20
Likes: 0
93 f150 302 codes
I just finished putting headers and a rebuilt transmission in this truck. It also is running on propane. I am getting codes 32, 54, and 70. I'm going to change out the evp sensor for the code 32, as I already changed the egr valve. I'm going to see if that will take care of the 54 as well. What should I do about the 70? Under light acceleration or just maintaining cruising speed, I get a jerk like a miss. Is this the famous torque convertor shudder? The tranny is an E40D and the motor has 112,000 miles. I've learned a lot from you folks in the last couple months. Thanks in advance.
Posting Guru
Joined: Apr 2002
Posts: 1,471
Likes: 3
From: Greenwood In. USA
Is the ignition up to par? It might be a miss. Also make sure you do not have any air leaks. LP is a little more prone to leaning out due to air leaks. Check spark plug wire routing. Separate 7 & 8 it could be an induction miss
Thread Starter
|
New User
Joined: Oct 2003
Posts: 20
Likes: 0
Thanks for the replies guys. I'll pull the codes again and see what I get, bigric. Gasmann, I switched out plugs, wires, cap, etc. recently. I had a bit of a surging idle until I switched out pcv and egr. Now it idles smooth, but with an intermittent miss that's hardly noticeable. Under hard acceleration, it does fine. The jerk occurs when barely in the throttle at cruise. I changed the air filter and it became hard to start. I ran it for a couple of minutes w/o the filter when I was changing it and it barely ran. I don't know if that's the nature of the propane as in a huge air leak or not. I'm clueless on the propane system and how it works, but the leaning out part from an air leak makes sense, but wouldn't it affect wot, too?
Thread Starter
|
New User
Joined: Oct 2003
Posts: 20
Likes: 0
I pulled the codes again and my truck does use three digit codes. (thanks bigric) I got 327 and 542. The 542 is fuel pump circuit open, which I assume can be explained by the fact that the truck is running on LP. 327 says voltage is too low on the evp, pfe or ept. I changed out the egr and evp and cleared the codes, but continue to get 327. Gasman, the device at the air cleaner, where the fuel hose connects says Imperial. I think you are on to something saying that the system may need adjustment, as the engine is breathing a lot better now with the headers and dual exhaust, but like I said before, I'm clueless on the workings of the LP system. Thanks in advance.
Trending Topics
Freshman User
Joined: Apr 2002
Posts: 34
Likes: 0
From: kalamazoo mich
Hi Overos!! lp driven huh? what kinda tank set up you have for that? more people should have thier cars/trucks tricked out for that!! Big question is: do you have to remove the tank from the truck anytime you wanna fire your barbeque grill up? ok im just jivin ya for fun...great setup though, keep us posted on how things work out k?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Posting Guru
Joined: Apr 2002
Posts: 1,471
Likes: 3
From: Greenwood In. USA
Sorry Overos I have been out of town today. Does the unit go in the air hoses and maybe have CA300 cast on it? Tell you what, Call me at this number tomorrow 8-5 EST
800-241-1971 and I can walk you through the adjustments faster than I can type.
Jim
800-241-1971 and I can walk you through the adjustments faster than I can type.
Jim
Thread
Thread Starter
Forum
Replies
Last Post
chillin9381
1997 - 2006 Expedition & Navigator
31
May 9, 2018 05:15 PM