Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
engine. Does this have a dual tps? Would this cause the engine idle to
drop and stall, as well as prevent it from shifting out of first gear?
He recently power washed the engine. Any thoughts??

Thanks,
Greg

 

On Dec 30, 4:49 pm, jerryg <Greggi...@msn.com> wrote:
> Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
> engine. Does this have a dual tps? Would this cause the engine idle to
> drop and stall, as well as prevent it from shifting out of first gear?
> He recently power washed the engine. Any thoughts??
>
> Thanks,
> Greg

This is a 92 Cherokee, sorry.

Greg

 

jerryg wrote:
> On Dec 30, 4:49 pm, jerryg <Greggi...@msn.com> wrote:
>> Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
>> engine. Does this have a dual tps? Would this cause the engine idle
>> to drop and stall, as well as prevent it from shifting out of first
>> gear? He recently power washed the engine. Any thoughts??
>>
>> Thanks,
>> Greg
>
> This is a 92 Cherokee, sorry.
>
> Greg

It just has the regular TPS sensor.
drop and stall can be a dirty IAP (Idle Air Passage) and
crudded up IAC (Idle Air Controller).

http://revbeergoggles.com/tb/tb.html

Usually a toothbrush to clean the throttle body, around and
under the throttle plate, then slowly spray TB cleaner into
the idle air passage. Might have to do it several times,
spray, then run, then spray, then run, etc.

One note of caution. Never run the motor with the idle air
motor removed from the throttle body, the pintle will shoot
out and you will have to buy a new IAC.

--
DougW

 

On Dec 30, 5:06 pm, "DougW" <I.only.read.use...@invalid.address>
wrote:
> jerryg wrote:
> > On Dec 30, 4:49 pm, jerryg <Greggi...@msn.com> wrote:
> >> Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
> >> engine. Does this have a dual tps? Would this cause the engine idle
> >> to drop and stall, as well as prevent it from shifting out of first
> >> gear? He recently power washed the engine. Any thoughts??
>
> >> Thanks,
> >> Greg
>
> > This is a 92 Cherokee, sorry.
>
> > Greg
>
> It just has the regular TPS sensor.
> drop and stall can be a dirty IAP (Idle Air Passage) and
> crudded up IAC (Idle Air Controller).
>
> http://revbeergoggles.com/tb/tb.html
>
> Usually a toothbrush to clean the throttle body, around and
> under the throttle plate, then slowly spray TB cleaner into
> the idle air passage. Might have to do it several times,
> spray, then run, then spray, then run, etc.
>
> One note of caution. Never run the motor with the idle air
> motor removed from the throttle body, the pintle will shoot
> out and you will have to buy a new IAC.
>
> --
> DougW

Thanks Doug.

Greg

 

On Dec 30, 5:06 pm, "DougW" <I.only.read.use...@invalid.address>
wrote:
> jerryg wrote:
> > On Dec 30, 4:49 pm, jerryg <Greggi...@msn.com> wrote:
> >> Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
> >> engine. Does this have a dual tps? Would this cause the engine idle
> >> to drop and stall, as well as prevent it from shifting out of first
> >> gear? He recently power washed the engine. Any thoughts??
>
> >> Thanks,
> >> Greg
>
> > This is a 92 Cherokee, sorry.
>
> > Greg
>
> It just has the regular TPS sensor.
> drop and stall can be a dirty IAP (Idle Air Passage) and
> crudded up IAC (Idle Air Controller).
>
> http://revbeergoggles.com/tb/tb.html
>
> Usually a toothbrush to clean the throttle body, around and
> under the throttle plate, then slowly spray TB cleaner into
> the idle air passage. Might have to do it several times,
> spray, then run, then spray, then run, etc.
>
> One note of caution. Never run the motor with the idle air
> motor removed from the throttle body, the pintle will shoot
> out and you will have to buy a new IAC.
>
> --
> DougW

What about the not shifting out of first gear part. It was fine
yesterday.

Greg

 

jerryg wrote:

> What about the not shifting out of first gear part. It was fine
> yesterday.

Check the transmission fluid level. Most Jeep transmissions are
real touchy when it comes to being low. Also check to make sure
it's not milky, powerwashing can get water into places it should
not be. I prefer using degreaser and a garden hose on low just
for that reason.

Idle problems can also cause shifting issues.


--
DougW

 

Yes, you do have a dual TPS and the classic power wash symptoms. WD40
is the best for this, it will displace the water in the plug and socket
of the TPS connection.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
'New' frame in the works for '08. Some Canadian Bush Trip and Build
Photos: http://mikeromainjeeptrips.shutterfly.com

jerryg wrote:
> Hello. My brother owns a 96 Laredo with an automatic trans. 4wd. 4.0
> engine. Does this have a dual tps? Would this cause the engine idle to
> drop and stall, as well as prevent it from shifting out of first gear?
> He recently power washed the engine. Any thoughts??
>
> Thanks,
> Greg