Question about 1996 GMC Jimmy

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Stalls and lack of power

Hard to start and stammers rpm varies

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Could be timing . Slipping timing , Cracked manifold or gasket .

Posted on Feb 02, 2015

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A shifting problem it loses power after shifting into drive and wont stay in over drive i have installed new throttle position censor but cant seen to get it set right if I move it up it changes the i


no car stated, no engine, and no year.wow. that is hard.
guessing, i see.
no year car stated
no engine option, which engine.?
what country.>? USA, Flordia.
or
Alert, Nunavut

why not get it serviced?
why not use a scan tool (1996+) and see if there are stored or live
DTC errors. (tops list)
A/T issues.?
a technician can tell you if the engine lacks power or the trans is failing.
The transmission will never use OD if the engine lacks power.
or the transmission or engine are stuck on limphome mode.

The TPS most be calibrated, ever seen the FSM book
the factory service manual> if set wrong idle speeds will wrong.

that which is stripped is bad, replace object stripped, the TB.?
the "Throttle body" or re-tap it or heli-coil it.

Test 1: done i 3 seconds flat
see FSM , see Trans, chapter.
see the stall tests. does that pass, parked, hot engine.?
that be first. if not , we work that first.
stall rpm too low, bad engine.
stall rpm too high , bad tranny.

i never once said to replace a part, that be last. (after diagnosis)
tell more get more.

Dec 06, 2014 | Toyota Cars & Trucks

1 Answer

What would cause my Dodge ram to stall when put in reverse and sometime just letting off the gas, or coming to a stop?


wow no year stated, nor engine size, you make this very hard.
stalls are complex.
how to cold engine? we cant guess that.
my wild guess. on why is here.
you need to watch engine RPM.
if rpm/s go too low below 800. say down to 500 that is a clue.
big clue. (means lack of engine power, or ISC is stuck closed or EGR main valve stuck open)
The ECU does every thing it can (ISC) to prevent stalls.
in fact as you select Drive or Reverse from park, the ECU adds throttle. (via is buddy ISC) the ISC adds air. and RPM rises.
The next question answer the reasons.
1: does a fast right foot, save the stall. yes or no?
easy, yes, hard, impossible no.??????????? a key test. and 100% free of charge. and tools. just a right foot.

Error, why not say what produced and error.
(my scan tool or my cluster display)
using a real scan tool youd get more errors, post the codes.
DO not decode them let us do that using the real FSM,

Rev. stall.
that means the ISC failed to add power
and on some engines, (MAF based) a vacuum leak will do that.
so will EGR stuck open (some engines have it ,others not)
what was RPM before you shift to reverse and did you
try to save it with a fast right foot.
there are lots more causes. up to 50.
(eg, leaking intake valves, sticking. on and on)
but first post the engine, ok.

we cant fix engine, with engine not stated, its not going to happen.
well,under 100 pages of tests. blind to engine.

Jun 20, 2014 | Dodge Ram 1500 Cars & Trucks

1 Answer

Rpm - Engine stalls


run fault codes to find the sensor putting on the engine light.

Mar 05, 2014 | Cadillac CTS Cars & Trucks

1 Answer

1998 Honda Accord engine rumbles and stops


rumbles?, did the RPM drop below 800 RPM? that is called idle failure
and when it does, idle can go to 400 rpm and will shake hard.
and is normal for illegal idle speeds. so post that first.
post that engine stalls
and that the RPM is 400-500 just before the stall.
then post if the fast right foot can save the stall (a key test !!!!)
if easy the ISC is sticking.
if tad hard the EGR is stuck open'
if impossible to save. then more possible (many)
ever do the 60k mile tune up this decade????,. if not why not./ now.

Dec 08, 2013 | 1998 Honda Accord

2 Answers

Transmission


A/T or M/T (auto or stick ,we dont know)
n moving in drive, reverse or Low or 1? or 2? (me too lazy to look what tranny you have)
it can be 2 things
1: lack of engine power
2: bad clutch or transmission

who do we tell? easy
you step on gas , RPM goes way high and MPH dont. (slips)
tranny slip.
you step on gas, RPM tracks with MPH, good ,
you then do the 5second max. tranny stall test in every car FSM made. and see the stall speed, with brakes hard set.
too high is tranny slip
way to low, engine power POOR.

alldata.com has all this on tranny. stall speed.
the FSM turn to on car A/T service, see STALL test.
bingo.
or youtube the vast number of videos on topic, stall.


wont move at all ,can be :
brake drag (passes stall test)
but first , the tests are, for bad engine or trans,
pick the one it is , state so, and we can go much farther.

Nov 26, 2013 | 1992 Honda Accord

1 Answer

Car will not move 2000 acura 3.2


ok you crank the engine over, it starts,
it can rev. to 3000 rpm for 1 second in park ?
y/n?
you then select, all gears forward and reverse and car can not move on flat ground, all brakes off?
can you push car in neutral on flat ground, , y/n ?

if no, brakes are bad. (or something more serious , ask)
if yes, tranny is dead (but....)

the if RPM rises, on engine (right foot action) and car MPH is 0
and rpm keeps rising that is a bad tranny (called slip or flare) in "D"
if you set the brakes hard,
and do the A/T stall test. (read the FSM)
and the RPM is way low that is a bad engine. (weak engine power)

if the RPM is good, stall tested. the engine and tranny are working. ( brakes stuck or frozen in ice?)
if the RPM flares, at stall test. it's a bad tranny
do the stall test for 5 sec max. rest for 15min and repeat.
STALL, test, makes tons of ATF heat. and heats the TC big time
RTM, it's all there. See FSM and read the manual.

Nov 23, 2013 | 2000 Acura TL

1 Answer

1997 jetta lacks power


It can be issue with dirty throttle body.The carbon layer got collected on throttle body.Also the IAC and MAF valve needs to be inspected,.
I suggest you to click the link below and follow the troubleshooting details,to rectify and solve the problem:-----http://technoanswers.blogspot.com/2012/11/1997-jetta-lacks-power.html----------These will help.Thanks.

Nov 16, 2012 | 1997 Volkswagen Jetta

1 Answer

Hard to start, engine dies on higher rpm


Hard to start and stall at higher RPM. So you are stalling at load. What the engine needs at higher RPM and load is more fuel.The fuel pressure at idle should be at 30 psi to 45 psi. A plugged fuel filter will also do this. so you need to address the fuel pump and filter

Feb 24, 2012 | 1995 Mercury Villager

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