Question about 1999 Jeep Grand Cherokee

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While I'm driving my car, it seems to slip out of gear while coasting and my tach drops to zero and it sometimes stalls. What could be causing this?

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Check for a loose wire around the coil area push them all on tight, and look for dirty or rusty wire conectors

Posted on Jul 02, 2009

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1 Answer

Why does my jeep turn off if I don't toggle the overdrive switch enough?


it stalls with foot in the throttle...... really.? try to say what you and car are doing at the od switch flips.. sure moving fast.
but doing what, up hill down, flat, acceleration, decel, or coasting?

ok, this can be real easy.
engine tuned up is 99%
ever heard of scan tool.
connect it, and log data (or person 2 watches) and log DTC and streaming data?
if the Magic relay called ASD drops the the engine stalls (this is its purpose) and if it did the SCAN TOOL tells you why it did.
every time...
asd class 101.:
http://www.fixkick.com/Jeeps/ASD.html

is transmission stuck in 3rd gear, limphome.??
the trans mission will not stall a car. 99%
that is because the clutch has a stall speed.
and slips greatly at idle, say 800rpm is hot idle , so if say the trans solid locked into top gear. and you came NEAR a stop sign, coasting... and braking.. say.....
and as rpm dropped, the clutch will slip and no trans ever stalls the engine.99% unless the engine is super weak and misfiring hard.
or ASD DROPs !
that is why we scan to see ALL ERRORS> engine and trans.
see?

Nov 06, 2015 | 2000 Jeep Grand Cherokee Laredo

1 Answer

Slips out of gear and stalls while driving


engine stalls.
are 99% failure to do tuneups? every 60k miles ,the least.
no engine stated. there are more than one opted.

can not help on zero engine posts.

Feb 01, 2014 | 1999 Jeep Cherokee

1 Answer

2001 buick lesabre - tach drops to zero - almost stalls - then runs ok


Have the automatic idle speed control valve cleaned.

Nov 05, 2013 | 2001 Buick LeSabre

1 Answer

Tachometer on 2001 buick park avenue stopped working


You most likely just need the tach repaired, they do fail. There is a company called Speedotach that repairs these as well as others, just google it

Jun 12, 2012 | 2001 Buick Park Avenue

2 Answers

What would cause these symptoms on a 2003 dodge durango engine stalls sometimes accelleration is affected and transmission seems to slip but may not be slipping


If the transmission seems to be slipping, check the fluid level for the automatic transmission.

If the engine stalls on acceleration, the tps or throttle position sensor may be bad, or the engine is in need of a tune up.

Dec 02, 2010 | 2003 Dodge Durango

1 Answer

Tach. drop's to zero while driving 70 ?


I have had the almost same problem twice. A 'thump', like the engine missed a fire and tach drops. Seems OK after restart. Electrical? Timing chain slip?
Has 135,000 mile. Any clues?

May 15, 2010 | 1997 Buick Park Avenue

1 Answer

1999 Durango: while driving down the road my rpm gage drops to z...


this sounds like a bad connection or a bad VSS sensor... either way it needs replacement/repair.. if the tach sends 0 info to the ECM the car will quit or run in an open loop causing it to run real poor... have someone like Auto Zone??? scan it for free and give you the computer code results.... this will help you unravel the mystery of the stalling.

May 06, 2010 | 1999 Dodge Durango

1 Answer

Trouble code po351 engine stalls, tach also goes


http://forums.cnet.com/7723-7811_102-270706/97-jeep-grand-cherokee-stalling-not-fixed-yet/

Feb 09, 2010 | 1998 Jeep Grand Cherokee

1 Answer

Engine will rev. No drop in speed, no increase in


likely what you are seeing is the first signs of slipping. If permitted to continue, likely it will get worse and you will then lose a bit of speed when it happens. In warmer weather the trans runs a bit hotter and will react to that. If you cannot hear the revs increasing but the tach says they are, it's also possible that for some reason the tach isn't reading correctly. Any good tech should be able to tell the difference. Problem I have is that I'm here and can't drive it to give you a "definite" on either.The only way to verify this yourself would be to attach an external tach to the engine and compare the rpms of the one in your dash to that one.

Sep 19, 2009 | 1998 Jeep Grand Cherokee

1 Answer

2001 Dodge Ram Magnum 360 gas stalling also!


1.Start by changing plugs and wires. 2.Check for vacuum leaks. With the engine running, wigglr every hose you can see, to make sure nothing is loose or cracked. 3.Change fuel filter. 4.Check timing. 5.Check air control valve. 6.Check idle control sensor.

Jun 15, 2009 | 2001 Dodge Ram 1500 Truck 2WD

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