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RPM wouldn't go over 4,cuts out

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Old Mar 13, 2003 | 04:33 AM
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eddierx7
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Question RPM wouldn't go over 4,cuts out
i have a 86 GXL ,while car in park RPM goes all the way but when driving it will not go over 4000 and starts to cut out
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Old Mar 13, 2003 | 05:04 PM
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Does it have normal power, or does it feel really weak?
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Old Mar 13, 2003 | 06:15 PM
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it does have regular power,runs sounds idles perfect
but when driving it wouldnt go over 4000 rpm,i got some new spark plugs,wires,oil filter
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Old Mar 13, 2003 | 06:24 PM
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Something might be wrong with your secondary fuel injectors... What about in neutral, can you rev it above 4k then? Does it seem to take unusually long for it to rev up?
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Old Mar 13, 2003 | 06:25 PM
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just a quick question before i give my opinion...can you try and rev a little bit and it goes all the way then it wont after wards? or does it rev normally at times, even while driving?
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Old Mar 13, 2003 | 06:30 PM
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I had the same problem once and it was just a loose connection to the fuel injector. They tend to get a little loose after a while. that's where I would start.
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Old Mar 13, 2003 | 06:40 PM
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it idles well,in park it revs all the way up but in gear under load it refuses to go over 4k expect when i fight with the gas pedal it some times goes over 4k but not all the time
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Old Mar 13, 2003 | 06:45 PM
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Is the cable binding? Sounds like you can't get WOT.

Before you mentioned fighting with the peddal, I was thinking you had switched the plug wires around. Might want to check that too.
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Old Mar 13, 2003 | 06:53 PM
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But does it rev normally, or seem to take a little longer to get there? And when did this start? was it a gradually increasing problem, or something sudden. Have you overheated recently?
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Old Mar 13, 2003 | 06:53 PM
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plug wires are fine it was doing the same before i put the new wires
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Old Mar 13, 2003 | 07:25 PM
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this is very simliar to my problem...
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Old Mar 14, 2003 | 02:34 AM
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so what was the problem blackrx7 and how you got rid of it
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Old Mar 14, 2003 | 05:10 PM
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still trying to find out, fixed most of it, check the power wire coming from the main fuse box, it may be grounding out somewhere
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