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It idle and don't want rev up

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1996 Geo Tracker 1.6 manual idles but won't rev up. No response from throttle.

low fuel pressure tops my list.
does the cluster lamp CEL glow , key
then go out, running (idling) it must
of not that means scan me , if in usa, are you?
in canada its different.
this engine makes power in limhome mode.
so my guess , low fuel pressure. the FPRs are failing now
this old, btw
it can stick open and pressure drops to 15psi and not 35,45psi.
btw , that was guess, and as most guesses, useless.
i do the tests, and least the results tell me truth.
i can rattle off, 10 top reasons or or even 50 , inside engine.
Low power has many causes, does it help guessing?
there are like 1 to 10 tests, to do and bam, cause.
folks that love to guess, send endless useless cash.

I i can tick off many top causes
your engine dont read my list it does what it wants. fate, miles, abuse, bad service, endless this topic. truely.
1: needs a tuneup.,
2: compression (cyl) low, its and old car.
3: maf dirty
4: low fuel pressure FPR , is toasted.
5: cat melted.
6: huge vacuum leak , in the main induction and Air fuel ratio goes super lean.
that top pipe for air on top engine loves to fail
and large number of ways, and all LEAK AIR.
I seen over 10 like this. even broken mount to it and sucking air like mad.
those are the top fails as is a slipped timing belt
but that is part of the tuneup, its replaced at 60kmiles, if you skip this service point it fails.
it slips and compressing drops by 1/2 and so does power. seen 100s like that.
why not just get car serviced if you dont own mech. tools?

Oct 06, 2016 | 1996 Geo Tracker 2 Door

2 Answers

Free lander rev counter intermittent and eng light on and off

What's the color of the smoke? white, white with a blueish color, or black?

Dec 01, 2015 | Cars & Trucks

1 Answer

1996 Toyota Camry idles high randomly?

Check and see if it has thrown any codes. Autozone will hook up their OBD for free. My thinking it is a sensor or a vacuum leak. Good luck.

Apr 05, 2017 | Toyota Cars & Trucks

1 Answer

Idle surging up and down from 500 revs to 1000 rev

As Always,variations in RPMs call for looking for a vacuum leak.If none found,clean the MAF sensor with brake cleaner spray and let dry totally.don-ohio

Oct 26, 2011 | 1996 Ford Explorer

1 Answer

Idles fine but dont rev

have you checked the fuel pressure at the fuel rail, it should be about 40 psi

Jul 11, 2010 | 1998 Chrysler Sebring

1 Answer

1991 audi v8 quattro

i would check the throttle butterfly for a carbon build up that may keep it from closing completely. have seen this cause stalling when returning to idle rpm. Best to try to remove and clean from both sides to get good results.this is just one of many possible problems. Hope it helps if so please let me know with a reply and good luck

May 05, 2010 | 1990 Audi V8 Quattro

1 Answer

AudiA3 Bad Idle and rough at certain revs

buy a bottle or two of gas line anti freeze, it absorbs any water that may be in your fuel. add one bottle now and one the next time you fill up. if it is water as i suspect you will notice results almost immediately.

Oct 05, 2009 | 2005 Audi A4

1 Answer

Sometimes car doesn't start up with a immediate fast idle.

Bad transmission, plugs, fuel pumps. That is all I think will definately give u such results.

Rate please.

Mar 21, 2009 | 1987 Buick LeSabre

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