Question about 1997 Chevrolet Suburban

1 Answer

Any solution short of a valve job?

1500 suburban, engine misses badly under load, eg uphill or towing boat. Scan shows "number 6 misfire," all elec checked ok, so I did compression check; #6 less than 25 lbs! Valve stuck open? is only fix a valve job? What will I have to spend if valve job needed?
Thanks in advance!

Posted by on

  • darryldillma Mar 08, 2009

    same exact problem including cylinder number.

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

I have had the same problem on several chevrolets in the past. The problem was either a broke rocker on the valve trane or the most common is a flat cam lobe. A flat cam lobe will not let the valve open fully or not at all.

Posted on May 18, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Have a 2006 jeep liberty 3.7 that feels like it's misfiring or transmission converter is going in or out of lockup. There are no codes being set. This problem happens randomly at all speeds. Any ideas?


you drove with scan tool running did you to see if you get
any P03xx codes on the FLY? yes/no
some can pop in and out fast.!
missing that fact ,misses the boat.
if engine is not misfiring then its a/t
the TCC lock up only happens under very specail set of rules
light loads. if you learn that (off FSM chart) you can drive
car such that TCC is defeated and if it misfires now ,its the engine
easy peasy

do a tune up in last 9 years>? full engine tune up.
and check trans levels too.

if random , you need to use the scan too better.
driving, you get wife to drive and you scan, see?
the PCM will report many things, but you need to drive it.
my cheap scan tool can log for hours. and can come one
and see all live streaming data (PID's) and all DTCs during that time
sitting at my desk. (omg, the crank sensor burped, 6 times)

Feb 25, 2015 | 2006 Jeep Liberty

1 Answer

Questionable missing


DTC'S - diagnostic trouble code's ? Having a ford scan tool an going to mode 6 data and misfire counters would show if the vehicle actually is misfiring ,an which cyliner it is .

Dec 08, 2017 | 2004 Ford Thunderbird

1 Answer

What would cause a miss in a 5.3 engine


no spark from coilpack bad ignition wire and or spark plug.scan test find which cylinder is missing.there is a service bulletin from g.m. on misfires 5.3L engines.possible carboned buildup piston rings.cylinders walls need to be inspected for abnormal wear.my need new short block.

Jan 20, 2013 | 2000 Chevrolet Silverado 1500

1 Answer

I have a 1999 suburban with a 5.7 vortec the engine wont build rpm while moving,but revs freely in nuetral or park.If the computer senses movement in forward or reverse the engine misses such as a rev...


The computer can't sense movement. An engine with worn spark plugs or bad coils can run perfectly fine at idle and begin misfire the second you put it into gear or under loads. Plugs/coils misfire most when under load. Have you checked them?

Oct 18, 2017 | 1997 Chevrolet Suburban

1 Answer

1999 v6 firebird misfires on #6 cyl when under load, plug was fuel fouled last time I had it replaced, but keeps missing only when under load. no other problems.


if you've changed the spark plug and no difference, then it's time to swap the coil with another cyl. coil and see if the miss goes to the other cylinder, if it does'nt follow to other cylinder, then I would replace that injector !

Mar 18, 2012 | 1999 Pontiac Firebird

4 Answers

I have a 1999 s- type Jaguar with v 6 engine. Recently it has begun to develop a shudder or miss especially when under load on an uphill climb. Upon inspection I noticed that the engine oil level was below...


no, and you were down a litre that wont matter, it sounds like a bad coil boot or coil thats arcing out on a load, i think this car has coils that go onto the plugs and the boots go bad, you can replace the boot on some cars without replacing the whole coil, you may want to tune up the car if its been a while and has over 70,000 miles,also if the engine was misfiring then the computer would pick up the misfire and store a code, this code which can be pulled with a scan tool, or most auto part stores will scan the computer and give you the code the code will tell you which cylinder is misfiring this way if it still misfires after the tuneup then you would need to replace the coil for that cylinder, heres a few diagrams showing the coil and theres one for every cylinder and then the boot which is sold speratly, hope this is helpful,johnjohn2_49.jpgjohnjohn2_50.jpg

Jan 03, 2011 | 2000 Jaguar S-Type

1 Answer

Overheating, lack of power under load


these trucks destroy heads, should be under 7yr. 70,000 warranty, call a dealer to in quire.

May 19, 2009 | 2004 Dodge Ram 1500

1 Answer

1997 Lincoln town car - engine miss


How do you know it's not a injector ? Could have a burnt transistor or driver in the PCM - engine computer . This transistor or driver supply's a PWM -pulse width modulated ground . No code's shown so probably not that . What is the compression of all the cylinders . How are you checking for codes ? Code reader ? A professional type scan tool that can view mode 6 data would show misfire counter . would know what cylinder is misfiring . Could have a transistor (driver) for coil control that could cause a misfire ,but would be two cylinders missing . Video's on youtube showing how to test a PCM/ECM driver (transistor)
How to test computer transistor driver without scan tool

Nov 03, 2017 | 1997 Lincoln Town Car

1 Answer

Check Engine warning light come on when towing uphill.


i would think your alatonor might be going out or you have a loose belt so your alatonor is now spinning anuff to power the engine

Dec 07, 2008 | 1999 Isuzu Trooper

Not finding what you are looking for?
1997 Chevrolet Suburban Logo

Related Topics:

129 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...