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Search: Posts Made By: RobMD
Forum: 4-Cylinder Tech 09-26-2012, 04:18 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Wow... great find!! Now I am almost fully convinced. I have a question for you though - What happens when the valve recesses so far? Do the lifters just hold the valve open during combustion? I...
Forum: 4-Cylinder Tech 09-12-2012, 02:36 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Thanks, but no, that has never been anywhere near a solution. If you read my problem, you would find that it misfires at idle only when cold. When warmed up after cruising on the highway, it will not...
Forum: 4-Cylinder Tech 09-09-2012, 10:27 AM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Good job on fixing it. I hope it's still running good. I have more miles on my truck than yours, reaching 145,000 mi. Still doing the same thing, misfire/shaking when cold. After it warms up, I...
Forum: 4-Cylinder Tech 05-04-2012, 07:21 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Well, I'm really glad you found your problem. I'm starting to think that your problem is MY problem because My truck misfire/rough idle got progressively worse. The problem first started at 55,000...
Forum: 4-Cylinder Tech 04-30-2012, 04:25 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Well, I thought I was always right with my theories and scientific analyses until I first discovered this problem with my truck 4 years ago. 4 years ago, my truck barely misfired at idle and would...
Forum: 4-Cylinder Tech 04-29-2012, 02:24 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

It's all so similar to mine except the fact that I've never had a lean code or ANY OTHER CODE for that matter. Just the annoying random #2 misfire. I really don't get how a mechanical issue can...
Forum: 4-Cylinder Tech 03-15-2012, 03:32 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Sounds like a plan. I really hadn't thought of the fuel injector doing that - is that even possible? Does the injector screw up it's pulse width at idle? Seems to me there would be a trouble code for...
Forum: 4-Cylinder Tech 02-04-2012, 09:28 AM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Me either, really. Mine is a daily driver but if I let it warm up in the morning and/or just drive it in the summer, i'll never feel the misfiring or the CEL come on. I don't want to pull the head...
Forum: 4-Cylinder Tech 02-02-2012, 05:34 PM
Replies: 37
Views: 9,570
Posted By RobMD
Re: 2.5l major issues please somebody help me :(

Sounds like a head problem could be the issue at hand. Didn't know valve recession into the head made much of a difference. What's the story there? Why does valve recession make a difference? The...
Forum: 4-Cylinder Tech 02-02-2012, 05:05 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

It's been a while since I've written here because I'm normally too busy. But everyday I get in my truck in the morning without warming it up, it irritates me to death when it starts shaking at idle...
Forum: 4-Cylinder Tech 10-18-2011, 04:09 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Thanks for the lesson! Makes sense to me. I knew it had something to do with how quickly the filaments are cooled in the MAF sensor but didn't really grasp it.

Yeah, I gapped the plugs correctly...
Forum: 4-Cylinder Tech 10-11-2011, 05:39 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Well,

I swapped my coil packs. No difference even with disconnecting battery before repair. If I take the #2 plug wire out of each coil, there is an arc about 1 inch long and when the engine is...
Forum: 4-Cylinder Tech 10-09-2011, 11:59 AM
Replies: 37
Views: 9,570
Posted By RobMD
Re: 2.5l major issues please somebody help me :(

Any updates on this? I have a truck which shakes violently coming to a stop sign. BUT it will always smooth itself out once the engine is warm, then you'll forget about the shaking. The colder it...
Forum: 4-Cylinder Tech 10-08-2011, 08:11 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Nope, I didn't know that. For some reason, it looks like in '02 they went back to the 2.3L. Looked under the hood one time, didn't look like it had multiport ignition.

As far as i'm concerned,...
Forum: 4-Cylinder Tech 10-07-2011, 06:43 PM
Replies: 8
Views: 994
Posted By RobMD
Re: chipping my ranger

Make it fast? You should have bought a 5.0 mustang. I would never want to even try to make my 2.5L 4 stroker "fast." I just sit at the sidelines and let the guys with real horsepower roll on by.
Forum: 4-Cylinder Tech 10-07-2011, 06:28 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

I didn't realize how that worked. They really outdid themselves for the emissions on these 2.5L's, didn't they? Looks like the term "multiport" is useless to anyone with horsepower on their minds.
...
Forum: 4-Cylinder Tech 10-07-2011, 12:40 PM
Replies: 46
Views: 28,800
Posted By RobMD
Re: '99 Rough idle/Misfire 2.5L

Hey guys,

Thanks for the replies.

I haven't even thought about the coil packs - Shelton, I never even knew that the multiport 2.5 works that way... could you explain more? I THOUGHT that BOTH...
Forum: 4-Cylinder Tech 10-05-2011, 05:37 PM
Replies: 10
Views: 4,349
Posted By RobMD
Re: 1998 Ranger 2.5L Manual Trans Shifting Problem

Weak slave cylinder or Pilot bearing problems.
Forum: 4-Cylinder Tech 10-05-2011, 05:18 PM
Replies: 46
Views: 28,800
Posted By RobMD
'99 Rough idle/Misfire 2.5L

Hey guys,

This would be my first post but I'm no stranger to a Ford Ranger. I've owned mine for 7 years now since it had 38,000 miles on it. It's a 5 speed 2.5L multi-port extended cab 2WD. It...
Showing results 1 to 19 of 19