ignition modular
Thread Starter
|
New User
Joined: Mar 2005
Posts: 19
Likes: 0
ignition modular
My bronco is a pain to start much of the time, and i ran into the same problem with a small jimmy i have before and it turned out to be the ignition modular so i'm thinking that i will replace that on my bronc and see if that's what it was. Anyone know a way to test if it is the ignition module, and what one do i need? i have 88, 351, 3 speed. I found one on partsamerica.com that is mounted on the fenderwall, its a Niehoff Ignition FF402 will this work?
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
dont guess, thats how things get expensive. first scan for codes both your haynes and www.fordfuelinjection.com explain how to do this using a paperclip. once you have done this let us know what you have found. when was it tuned up last with plugs,wires,cap/rotor, fuelfilter and timing set to 10*btdc with spout connector removed? these things are all important.
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
There is no Code 40 for EEC-IV computers.
Code 29 indicates no signal from the VSS (Vehicle Speed Sensor) when all of the OTHER sensors indicated that the truck was actually moving.
Code 31 indicates that the EVP (EGR Valve Positioning) sensor generated a LOWER voltage than expected during the self-test.
Not sure what to tell you about the code 40 since there is no such animal in the EEC-IV computer codes. The Code 29 would indicate either a faulty VSS or it has intermittant ground or power feed. Check the connector at the sensor on top of the rear differential housing.
Code 31 is the most likely reason for the hard starting. If the EVP sensor is disconnected, has a bad ground, or has just plain failed, the Computer has no idea whether the EGR valve is open or closed. Since EGR is applied and removed by the computer at different times under different driving conditions, the computer needs the positioning info from the EVP to ensure application of the EGR system at the proper time. The EVP sensor is located on top of the EGR valve to the left and behind the the throttle body. The connectorhas three wires running to it - Black/white, brown/light green, orange/white.
Code 29 indicates no signal from the VSS (Vehicle Speed Sensor) when all of the OTHER sensors indicated that the truck was actually moving.
Code 31 indicates that the EVP (EGR Valve Positioning) sensor generated a LOWER voltage than expected during the self-test.
Not sure what to tell you about the code 40 since there is no such animal in the EEC-IV computer codes. The Code 29 would indicate either a faulty VSS or it has intermittant ground or power feed. Check the connector at the sensor on top of the rear differential housing.
Code 31 is the most likely reason for the hard starting. If the EVP sensor is disconnected, has a bad ground, or has just plain failed, the Computer has no idea whether the EGR valve is open or closed. Since EGR is applied and removed by the computer at different times under different driving conditions, the computer needs the positioning info from the EVP to ensure application of the EGR system at the proper time. The EVP sensor is located on top of the EGR valve to the left and behind the the throttle body. The connectorhas three wires running to it - Black/white, brown/light green, orange/white.
Last edited by greystreak92; May 11, 2005 at 08:52 PM.
Trending Topics
Thread Starter
|
New User
Joined: Mar 2005
Posts: 19
Likes: 0
40
Well here's the thing, it when i have the code scanner on and then turn the engine on it will have a four beep sequence and that's it so i assumed it was 40, which according to the code page kemical gave me that would mean the 4th cylinder is unbalanced.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Senior User
Joined: Sep 2004
Posts: 240
Likes: 0
From: Columbia MO
There are no sensors for balance on a cylinder. What type of reader do you have? Check the start sequense of the reader. you can have the Ignition module located under the distributor checked at Oreillys auto store and i do believe also at auto zone (for free). They have a check machine they read the module 5 times and it has to read bad 3 times. When I had mine checked they only did it once the module checks3 or 4 systems and mine failed on everyone my truck started a lot easier after i replaced it. you will need a special nut driver to get at the screws they cost about 5$. well worth it.
Thread Starter
|
New User
Joined: Mar 2005
Posts: 19
Likes: 0
sensor
Its an actron reader. I was just going by the post that kemical had given me about pulling the codes and it said 40 was that which is why i thought it was interesting because i didn't thikn there were any sensors for the cylinders being balanced. Thanks for the suggestion about autozone, i'll take advantage of that.
Senior User
Joined: Nov 2004
Posts: 225
Likes: 0
From: Birmingham AL
My 88 with a 302 was requiring more and more cranking to get it started. I took it to a fuel injection place and they put a spacer on the throttle body and then charged me a couple hundred bucks. When I picked it up it did the same thing. I took it back and they said they adjusted the fuel pressure regulator and it has worked fine since. They did not charge me for the recall! I have never heard of adjusting the fuel pressure regulator.
Last edited by jem270; May 12, 2005 at 03:56 PM.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
Jem
what they did was put a bandade on your real issue. adjusting the fuel pressure is not the right way and that spacer is a better paper weight then anything. You got took in more ways then i can say.
what they did was put a bandade on your real issue. adjusting the fuel pressure is not the right way and that spacer is a better paper weight then anything. You got took in more ways then i can say.