Question about Cars & Trucks
Clean out the throttle body . I use a lint free damp cloth damped with carby cleaner . Don't let any fluid find its way into the TPS. it is good practice to check the switch with a OHMS meter at this time , connect the meter to the switch, slowly open and close the throttle , there must be a ever movement of the meter if it flicks or jumps replace it. If there is any movement in the housing of the butterfly shaft replace it.
Posted on Apr 03, 2015
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Posted on Jan 02, 2017
try this b4 taking things apart... redexe/wynns fuel additive and using high octane fuel the computer will adjust running accordingly...
Posted on Mar 09, 2010
Hi harry, the throttle body is the part mounted onto the intake manifold and is held in place by four bolts and nuts. One side fits onto the metal of the manifold with a gasket between, and the other side has the rubber ducting from the air cleaner. The throttle cable and kickdown cable are fitted to it. On the other side of the throttle body is the throttle position sensor. Do not carry out any adjustments to it. Cover it with a plastic bag and do not allow any cleaning fluid to contaminate it! Resetting the sensor requires special adjustments and very careful settings and can stop the engine from starting once refitted. Regards John
Posted on Oct 27, 2012
hot engine , cold or both? is hot idle speed at spec RPM?
no engine stated, so all answer go to generic, see?
4.0L I-6, one of 5 million? USA car , not the export?
skipped air filter and fuel filter, why? its part of the tune up.
that is called misfire.
I use a scan tool , first to find misfire,
even a 10 buck tool works on all 1996 USA cars, no need for the $200 tool, unless you have newer cars..
its not vacuum lines, leaking, as that makes engine only race.
but if the vacuum is lost to some devices, that sure is bad.
I already tossed coin landed on 4.0L for you.
it runs via a mAP sensor and air leaks with MAP systems, make full power and race with any air leaks at all.
(study Speed Density EFI systems)
if you suspect the front 02 as bad, or exhaust leaks near it.
unplug it, that cure the misfire?
1: bad spark.? gap plugs wrong? bad coil?
2: bad fueling,. is it running rich? spark tips black, wet or oil soaked or antifreeze soak, yes , learn to read spark tips, works for 100 years. now. this easy simple test.
white to light tan/light gray is best. on all tips.
so it misfire parked in neutral, boy that makes this easy, huh?
fix easy first and hope for better ? hot engine, misfire. 101
1: i connect scan tool, oops DTC aplenty, need i say more. NO.
2: i then have no DTC errors. so is ECT reading 180F or more, if not fix that now.
3: i then look at all sensors. live data stream. (all PIDS)
i see all read right. but 02 , LTFT and closed loop busted.
if engine fails closed loop at idle i fix that NOW.
see why,? its simple and easy to do parked, is why.
Oxygen sensor front (02):
if the 02 reads wrong, there are some causes. say its stuck at 0v.
to fix cars, it takes tools : GOT TOOLS?
if not, get it serviced???????
Posted on Mar 31, 2015
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