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Sep 20, 2004 | 03:06 PM

speedofmouth

Thread Starter

New User

Joined: Sep 2004

Posts: 21

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From: Windsor, Ontario, Canada

Newbie Needs Help

Hey im new here and had some questions on my new (to me) truck. I love the performance market and am into automotive allot (grades 9-12 auto classes and co-op) and am farmiliar with most sports cars but not trucks, that is untill i got my '91 F-150 2WD reg. cab automatic, now im looking for parts and cant find a whole lot for my application. If anyone has suggestions on good quality parts and where to get them that would be great. Also my truck dosnt idle well and i'm thinking of replacing the plugs and wires on the 5.0L, would that solve the problem?

Sep 20, 2004 | 04:21 PM

MustangGT221

Post Fiend

Joined: Nov 2001

Posts: 14,947

Likes: 6

From: Topsfield, MA

Welcome to FTE!

Most likely a good plug/wire/cap/rotor change would help you even if it doesn't fix the problem.

What kind of parts are you looking for?

Also, in the future, please title your threads to more accurately describe your topic

Sep 20, 2004 | 06:33 PM

andym

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Joined: Mar 2002

Posts: 19,402

Likes: 38

From: Bonita Springs FL

There are a TON of aftermarket parts out there for the 302. Ford also put these parts in mustangs. Check out summit racing, that will give you some ideas.

A rough idle can be caused by an awful lot of things. A tune up is a good first step. If that doesn't work, try pulling the codes. You may have a sensor out of whack.

Sep 22, 2004 | 09:26 AM

biggreen78

Senior User

Joined: Jan 2004

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what are you looking to do with your truck?
that will help to determine what types of places to look.

Sep 22, 2004 | 10:27 AM

mike L

Fleet Mechanic

Joined: Jul 2004

Posts: 1,552

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From: va

Quote:

Originally Posted by andym

I was told by a technition to replace all tune up parts except spark plugs. Remove them clean and gap them only. If you still have a problem get trouble codes, even if the check engine light is not on. If theres a bad sensor you could foul out your spark plugs. ( truck wont start with fouled out plugs?) Your thoughts,
thanks

Sep 22, 2004 | 10:48 AM

90f150moneypit

Posting Guru

Joined: Jan 2003

Posts: 1,061

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From: Still under the hood in O

Always start with the tune up......including plugs. If the new plugs foul so badly that it won't run you have much more to worry about. Such as gas or oil soaked plugs. If a sensor is the only thing that fouls them they WILL clean up after it has run properly for a short time (after fixing the problem).

If it won't start, first check to see if your getting spark and fuel. Even a weak spark from bad plug wires will start the motor.......it may run like crap but it will start. If your getting fuel AND spark and just will not start, check the compression and make sure the MAP sensor is functioning.

For just an idle problem, do the tune up (always include o2 sensor and air filter). Clean out the IAC, also checking the fuel pressure wouldn't be a bad idea.

Sep 22, 2004 | 11:12 AM

mike L

Fleet Mechanic

Joined: Jul 2004

Posts: 1,552

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From: va

Sorry to but in again. 87 ford f150 runs bad. Tune up is done. Whats the best order to check sensors? IAC,o2,TPS,MAP, then? Thanks The plug in port is damage so i cant check for codes.