RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm

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RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/19/2005 3:48:15 PM    Bullitt94 Posts: 428 Score: 0 Joined: 8/18/2005 Status: offline I will be glad to remove the radiator if this is the problem. I've been dinking around with it all week and I'm itching for a solution. (Hopefully an inexpensive solution; I don't think balancers are too pricey.) _____________________________ 1994 Ford Mustang GT 1990 Ford F-150 2001 Lincoln LS V8 1970 Ford Bronco 2006 Harley-Davidson Sportster Custom 1994 Mazda 626 LX If you don't already own a Ford (or Ford owned product), get one. (in reply to cctxfish) Post #: 11

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/19/2005 4:23:13 PM    Ramrod48   Posts: 608 Score: 0 Joined: 7/11/2005 Status: offline Last time I bought one was several yrs, ago thru FORD , think it was like $80.00 ?, Well should be ppl here on an off Tomm. so if you can , or get stuck somehow . Come on back An we'll see what we can do . (in reply to Bullitt94) Post #: 12

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/19/2005 4:46:16 PM    Bullitt94 Posts: 428 Score: 0 Joined: 8/18/2005 Status: offline Thanks for the help! I'll let you all know what I find. (in reply to Ramrod48) Post #: 13

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/19/2005 6:05:13 PM    Octane Posts: 25 Score: 0 Joined: 7/31/2005 From: Edgerton, WI Status: offline My '99 F-150 has a little bit of a shake to it at that rpm range, but its only at idle. When you are driving with the engine between 1,000-1500 rpm it doesnt shake. Octane _____________________________ I figured I'd listen to your theories, mock them, then embrace my own. You know, the usual... '99 Ford F-150 XLT 173,000 miles (in reply to Bullitt94) Post #: 14

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/21/2005 1:57:06 AM    Bullitt94 Posts: 428 Score: 0 Joined: 8/18/2005 Status: offline I checked out the balancer, and it seems to be fine. I pulled each plug wire off individually while the engine was running and I found that there was one cylinder that didn't effect the engine idle when I pulled the plug wire off. I pulled the plug out and started the engine and it had spark, but there wasn't any fuel/air mixture that came out of the hole where the plug was. I put some injectoer cleaner in the tank and drove for a while, and it seemed to get somewhat better, but not perfect. I filled the tank after driving and put more cleaner in. I will see if this makes a difference, but I'll have to hook up to a computer to see if I'm getting a code for this. _____________________________ 1994 Ford Mustang GT 1990 Ford F-150 2001 Lincoln LS V8 1970 Ford Bronco 2006 Harley-Davidson Sportster Custom 1994 Mazda 626 LX If you don't already own a Ford (or Ford owned product), get one. (in reply to Octane) Post #: 15

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/21/2005 12:16:42 PM    Ramrod48   Posts: 608 Score: 0 Joined: 7/11/2005 Status: offline Wouldnt be the first time I had a bad spark plug that wouldnt fire under pressure, but spark ok outta of the motor . Back in the day we had a plug tester -- that basically put the plug under a load, An it had a window to look through to see the plug was firing. You dont see them these days !!!!!. And your only going to get a TINY bit of fuel outta a cylinder, Its not like you can crank it over an see a mist coming out . , An its quite possible you got a plugged / bad injector , probaly the best thing you can do is go an get the fuel system flushed , I think its like $ 80.00 bucks these days , will make a world of diff. in the way it runs . !!! (in reply to Bullitt94) Post #: 16

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/21/2005 10:19:12 PM    Bullitt94 Posts: 428 Score: 0 Joined: 8/18/2005 Status: offline I wouldn't think that the plugs won't fire when under pressure because everything from the coil to the plugs is new, but that doesn't mean it isn't happening. I still want to see what kind of codes I get from it. I think a fuel system flush would be a good idea, too. I did use it again today and it is running MUCH better, but not perfect. It still wants to shake sometimes, but only around 900-1100 rpm. It isn't as intense as it used to be, either. I will let everyone know what I find with the codes. < Message edited by Bullitt94 -- 8/21/2005 10:21:48 PM > _____________________________ 1994 Ford Mustang GT 1990 Ford F-150 2001 Lincoln LS V8 1970 Ford Bronco 2006 Harley-Davidson Sportster Custom 1994 Mazda 626 LX If you don't already own a Ford (or Ford owned product), get one. (in reply to Ramrod48) Post #: 17

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/22/2005 1:33:01 PM    cctxfish   Posts: 735 Score: 0 Joined: 1/12/2005 Status: offline Will then the code is going to be missing fire on # cylinder, or random misfire. Its best to have a shop do the injector cleaner. They have to shutoff fuel pump and tie in to the fuel line with the injector cleaner machine. (in reply to Bullitt94) Post #: 18

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/24/2005 5:23:09 AM    wertyders   Posts: 1 Score: 0 Joined: 8/24/2005 Status: offline Had the same problem! My 98 would almost go dead when stopped at a red light. I had a vacuum leak. Real difficult to find. It was on a 90 degree rubber boot located on the bottom side of the intake manifold, at the front of the engine. It appeared to get hot and literally melt. A mechanic qouted me a price of 200$. He said the manifold would have to be removed to make the repairs. I was able to change the boot myself with a little work and didn't have to remove the manifold. It was real tight but definately capeable. I think the mechanic was trying to make some easy money. The part cost $12 at the dealership. The counter man knew exactly what part I needed, as if he had sold a few. (in reply to Bullitt94) Post #: 19

RE: 1990 Ford F-150 Shakes Between 1000 & 1500 rpm - 8/24/2005 9:30:45 AM    Bullitt94 Posts: 428 Score: 0 Joined: 8/18/2005 Status: offline I inspected the vacuum lines once already, but that doesn't mean I missed or overlooked something. I did buy a code tester the otherday, and I plan to use it tonight. I will keep everyone posted. _____________________________ 1994 Ford Mustang GT 1990 Ford F-150 2001 Lincoln LS V8 1970 Ford Bronco 2006 Harley-Davidson Sportster Custom 1994 Mazda 626 LX If you don't already own a Ford (or Ford owned product), get one. (in reply to wertyders) Post #: 20

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