94 Mustang gt 5.0 running with tps unplugged

[HISSIN50]

Has the battery been disconnected since you drove it last [and it gave your problems]?

This thread has been all over the place. Perhaps you can post exactly what the issue is at this point in time.

 

[MarshallPhil3]

Yeah i disconnected it and left it off for a while, still doing the same thing.

Okay, i start it up and it starts and idles fine then i rev and it wont rev past 2500 then it boggs down and if i try to punch it from idle i get nothing. It just boggs then i hear a popping noise which seems to be coming from under the hood. I've check the plugs, distributor, coil, replaced fuel filter, cleaned TB, checked MAF ( havent cleaned it though), checked for vacuum leak (physically dont have a tester), added seafoam to gas,oil,intake , checked fuses, cleared kam, changed TPS, I think thats about it.

I'm thinking its either clogged cats, bad fuel pump (i hear it kick on and it holds a steady idle and holds at about 2200rpms so im kinda crossing that out), dirty MAF, Vacuum leak (in case i missed a hose but i dont hear and leaks when im under the hood and its running.

So thats the situation, if ya'll have any ideas what it might be would greatly appreciate it. thanks

 

[toyman]

BTW you test the TPS with the key in the run position but with the engine off (KOEO).

 

[Canary94GT]

Vacuum and fuel pressure testing gauges are good to have, but can set you back around $45-55 depending on where you get them.

You want to make sure they are the *testing* type of gauges (particularly the fuel pressure one), not gauges you install in your dash. That way the fuel pressure gauge has a pressure release valve which is useful.

A vacuum leak usually causes rough idle, high idle, and lean conditions. This doesn't seem really the case to me, but you may still have a vacuum leak somewhere.

I think your fuel delivery system and catalytic converters could be suspects. Catalytic converters can be tested if they're clogged by using a vacuum gauge and holding the throttle at around 2000-2500 rpms and seeing if the vacuum drops.

Fuel delivery you test with a fuel pressure gauge of course.

Cleaning the MAF sensor is still a good idea.

I cannot reiterate enough it seems that a Haynes manual is invaluable with regards to testing procedures.

I'm getting really tired of reiterating this stuff.

 

[HISSIN50]

Was the timing and the SPOUT connector (being in place) ever checked? I might have missed it but I didn't see it listed in the most recent synopsis.

 

[MarshallPhil3]

No the timing has not been checked and what is the SPOUT? It's not misfiring between idle and 2200rpms it sounds really good just nothing after that. Canary94GT- Okay thanks i appreciate it, and i havent bought a Haynes manual yet cause i figured its better to get advise from actual people then trying to thumb threw a book. And fyi nobodys making you post on this thread, im just looking for some help, but if you wanna keep it up you can just get off this thread, up to you. thanks

 

[HISSIN50]

Friendly thoughts: Guys post because they want to help other guys out. It's frustrating when advice is given and not taken, and that may be where some frustration is coming from.

It's also helpful to search when unsure of what someone is talking about. The responder mentions the initial terms so the OP has something to consider or research. If the OP keeps asking what everything that gets mentioned is, it wears out the responders. This might be another area where a repair manual comes in handy (as does the search function on the forum).


Timing and SPOUT connector info:

Checking, Setting and Bumping up your Mustang's Timing

 

[Canary94GT]

^ Exactly. Thanks Hissin

 

[Chythar]

I'm gonna de-lurk and add a bit to what Hissin has said. This forum is here to help and teach, not to hold someone's hand and do all the research for them. So the answers any OP will get will be ideas and personal experience from the more experienced forum members on how to troubleshoot the problem. Specific details may be left up to the OP to research and learn on their own.

In other words, we're happy to help the OP learn but you need to show us that you're trying to learn. Too many posters want to be hand-held and told in a step-by-step fashion how to do some of the really basic stuff. If you're not sure what a term means, put it in the forum search box and do some research.

That being said, I always find it amazing that many folks really do not know how to do research and use the search feature. They're not necessarily being lazy, they just don't know how to look it up on their own. So for them, they really don't know what to do next.

One more thing: It's really easy for those of us who've been here a while and who have done so much, to forget how much we've learned and take for granted. So when someone comes along that barely can change their oil, it's easy to think they're lazy and dumb. It's not true, of course; they just don't have our knowledge and experience. I ran across an old post of mine from years back and realized just how much I didn't know back then. We've all come far from where we were years ago, and I'm happy to pass on what I do know to the next generation of Mustang owners.