Question about 1991 Isuzu Stylus

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I have a 91 Isuzu Stylus xs DOHC, i traded my buick that was having electronical issues. It was over heating, so we pulled the heater core and found that it was put in backwards, then also come to find out the some where in the cooling system there is a clog we are fixing that but the major issue we have with it is power. put it in 1st gear, and let off the clutch and it goes turtle speed till it hits 2500 rpm, then it takes off but when it started get hot none of the gears had power had to rev the engine over 2500 just to get it to move. other than that the body is perfect, and the interior is almost emaculent, has no tick or knock in the motor and unfortunately i can't find a repair manual for it that i can afford. i want to keep the car just don't know much about it as i did my 72 dodge adventurer, and 85 ram charger. (Had a baby had to get rid of my toys). any suggestions will help thanx Catherine

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  • neonangel69 Oct 10, 2010

    Thank you lol next question do you know how to check the ignition timing??

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  • 62 Answers

Has it had a recent cambelt change(timing belt)? Sounds like the symptoms indicate your engine timing is wrong!

Posted on Oct 08, 2010

  • neonangel69 Oct 09, 2010

    As far as i know it has not had a cambelt change. We found that the negative battery cable was loose so we fixed that and it seemed to have a bit more power till you turn on the ac then forget it the car doesn't want to take off. i bought it mainly cause i thought we could fix it and there was nothing wrong with the ac. i am clueless.

  • benzev Oct 09, 2010

    Maybe the cambelt has skipped a tooth to put the timing out or maybe the ignition timing is out! The ignition timing would be the first point to check!

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1 Answer

I just put a bypass hose on my 91 Buick lasbre and turn on the heat and started seeing steam come out the vents and now its steam on my windshield


Sounds like you have a bad heater core or you have antifreeze leaking in the into the heater box. Maybe a loose clamp on the bypass hose or maybe you damaged the heater core tube when you installed or removed the bypass hose and now it is not sealing properly.

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Timing marks on 1.6 dual over head cam


the geo storm, 1.6 DOHC
the FSM cover it, so does alldata.com
hint 2, its an Isuzu engine.
its really (makes information easier to find )
Isuzu:
4XE1-UW a DOHC 16-valve engine with 130 hp (97 kW)
he DOHC engine was used in the 1990-1991 Isuzu Impulse XS, in the 1990-1991 Isuzu Stylus XS, in the 1990-1991 Geo Storm GSi, and the M100 Lotus Elan.
all that off the wiki,,
all cars rare here.....

1st google hit
http://www.robietherobot.com/storm/torquespecs.htm

This engine is interference type
so when timed, with a new belt
roll engine by hand, with spark plugs out.? do pistons hit valves.
yes, stop, the cam is timed wrong.
no, do a compression test on #1, if pass, do all 4. 150psi min.w.o.t.
wide open throttle
a better test, is a leak down test. x4. by hand.
these acts of kindness to the engine, saves most engines.

if the leak down fails, the timing is wrong, or the valves are already
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1 Answer

No heat in 91 buick park ave


most likely need your heater core flushed seeing this is an older car.. only other option is the temperature actuator.

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1 Answer

Having problem in finding location for the water pump of a 1991 isuzu stylus xs DOHC


The water pump for this vehicle is timing belt-driven. It is located behind the timing cover, which is behind all the accessory drivebelts.

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1 Answer

I have a 96 Buick Century , no heat . i replaced the thermostat and added coolant but still no heat . I also cannot find any leaks .


you may have a clogged heater core
the heater core can be found under the dash on the passenger side
hope I could help
leave feedback if you can
good luck

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Sounds like a bad heater element switch or heater core. Sound like the heater control switch. On the front side of the heater core you should find a plug. Pull the plug and remove the two screw. The switch should come out. Replace it.

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91 buick coolant/water pump problem


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1 Answer

Lack of heat


Sadly "there" explanation is probly correct, when you say you have some but not alot of heat on low and then almost non on high, that is due to a plugged heater core. A heater core acts as a miniature radiator inside your cab. When the fan passes the air by it it picks up the heat and blows that into the cab. While doing that it also cools down the heater core. The more are you pass by it the cooler the core gets. What you can try first before replacing it is a coolant flush. This will run a mild acid like sollution through your entire cooling system. Sometimes that alone is enough to let more hot antifreeze run into your heater core thus giving you more heat. Another option is to disconect both lines into your heater core from in the engine compartment and run a hose into one , leaving the other to drain out. Depending on how plugged it is sometimes you can "Flush" out the buildup this way as well. G'luck and keep warm!

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