Question about 1990 Jeep Wrangler

2 Answers

My 1990 jeep wrangler starts up and runns fine while ideling but as soon as you start excelerate it bogs down at about 2400 rpm,s and if you floor it it really starts to bogg its like it wont excelerate at all at 2400 rpm's or more ive changed plugs , wires, fuel filter and checked vacume lines but still noy sure of the problems it is a strait 6 4. liter carburated

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 26 Answers

Hey, i just had about the same problem. evry one was given me advice ,have had the coil check? i did and mine was on the low end they said the on ohms would be 8.64 and mine was 8.95 so i went for knew very cheap part at 14.00 changed rotor and cap. was around 56.00 for all. it was not my prob.i got to think about it what would cause it to run but would not go to higher rpm. well exhaust has to go somewhere so, i disconnected the exhaust at the catalatic converter and it ran like atop like new. hope this is it. i hope you have four bolts, this just break loose and becare not to brake the gasket. good luk ! claymister.

Posted on Dec 04, 2011

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,118 Answers

Chk. E.G.R. valve make sure its got vacume and that its functioning, they do get carboned up and quit working that will make it bog down. Also if that is not an issue, i would chk. fuel pressure, just to make sure you got the right P.S. I. If none of that helps the only other thing i can think of is timming.

Posted on Feb 23, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

When I start my 1990 Talon TSI runs fine as it warms up runs real rich has no power and boost is very high. At low RPM around 2500 its fine after that all hell brakes lose bogs down and wont go ?


check the air cleaner and replace if necessary. ( low air volume = rich mixture ). Check/clean exhaust system as back pressure may be too high at high rpm's. Check fuel quality and do not use e-mix fuels.

Sep 10, 2014 | 1990 Eagle Talon

1 Answer

Why is my jeep hesitating, going up a hill or when flooring it to pass?


nice facts, all, but no engine size options stated.
after all it's an ENGINE question.
you dont know whats there, and doing DIY> really?

one fact missing, and is key
does WOT power CATCH up
that is you move right foot fast and it bogs, we get that but what happens after the bog> ? more bog or it catches up.
if it dont catch up;, on hills, maybe fuel pressure low.
see?
at WOT there is no 02 sensors. nor TPS (enrich)
at WOT only you , then engine sucking air like mad the MAF at max voltage and if fuel pressure is low the car has endless bog.
see?

wot, = wide open throttle, use a hill to test, flat is useless .
max fuel is at max HP (max torque + max RPM both same time)

i own an 08 wrangler, 3.8L stick.
i just sold my 02,. with 2.4L I4, it was a bogging engine day one out of factory its a gut less I4. (only tubo can fix it)
2.4 or 4.0 L.
ive own all of them 4 and 6cyl.

Jul 19, 2014 | 2003 Jeep Wrangler

1 Answer

When started idels high about 2000 rpm then drops when hot cold ?


the iac probably has carbon built up around it this controls the idle speed try cleaning it first,if not it could be a bad iac or a vaccum leak that the iac takes some time to compensate for to control idle.

Sep 17, 2009 | 2002 Jeep Wrangler

1 Answer

Hard starting first time and ideling rough RPM jump up and down about 500 sometimes when it's put in reverse to exit the garage it stalls. It also smells of gas when started. I have replaced all the...


i have a 1986 chevy corvette, when you fist start the motor it idel fine, when it wormes up, it ideling rough and RPM jumps up and down, and you can smell gas when you fist statrt it but there is no leaks,also when your driving about 45mph it puags down until you push it and then runs fine. please help me with this issue.

Sep 08, 2009 | 1990 Chevrolet Corvette

1 Answer

Jeep Wrangler 6 cyl. idles up and down


Have your oxygen sensor checked, one of the symptoms of a faulty oxygen is an up and down idle.

May 04, 2009 | Jeep Wrangler Cars & Trucks

1 Answer

Bogs out when i accelerate


plug wires!? They go bad over time, but may still look ok from outside ... get an ohm meter and pull a wire and check ... more than 500 ohms per foot is no good..... Good high quality wires will be no more than 150 ohms per foot.

Apr 07, 2009 | 1990 Jeep Wrangler

Not finding what you are looking for?
1990 Jeep Wrangler Logo

262 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...