Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-19-2011, 04:44 PM   #21 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,741

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,573
Thanked 3,509 Times in 2,196 Posts
Right now, when it won't even fire, is the perfect time to do a quick diagnostic. Pull a sparkplug, connect it, ground it, have a helper crank it over, and check for spark- and the quality- nice blue snappy arc- of that spark. If that's bad focus on ignition problems. If it's good, focus on the fuel system. Perhaps do a compression test to rule out any long-block issues.

__________________


  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-19-2011, 07:16 PM   #22 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,105
Thanks: 2,356
Thanked 804 Times in 474 Posts
Thanks Frank.

Supposedly when I took the car in to the shop, they did a compression check and it checked out " just fine ".

I also am pretty sure the fuel filter is working O.K. since I hear the whirring noise when the ignition key is turned to the on position, but this is from inside the car.( I think the whirring noise that I hear is the fuel filter being pressurized. It goes on then shuts off after a couple of seconds.

I tried doing the spark test earlier, but I don't have a helper handy.

It's been so long since I had done a spark test that I may be doing it wrong. I just pulled the #4 plug out and cranked it over while having the plug dangling out of the wire. I couldn't see anything, so Ill have to wait till I can find a helper.

I didn't ground the plug when I did the spark test though. I'll research how to do that now.

Thanks everyone for the help.
  Reply With Quote
Old 02-19-2011, 07:19 PM   #23 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,105
Thanks: 2,356
Thanked 804 Times in 474 Posts
If the ignition was bad though, I would think that the car would run rough at idle. The car ran very smooth at both idle and even when flooring it. No stuttering at all.
  Reply With Quote
Old 02-19-2011, 07:36 PM   #24 (permalink)
Master EcoModder
 
vskid3's Avatar
 
Join Date: Jun 2008
Location: Utah
Posts: 975

Civic DX (sold) - '97 Honda Civic DX
90 day: 34.15 mpg (US)

GTO (sold) - '04 Pontiac GTO
90 day: 22.62 mpg (US)

Green Brick (sold) - '06 Ford Escape Hybrid
90 day: 31.93 mpg (US)
Thanks: 193
Thanked 311 Times in 220 Posts
Quote:
Originally Posted by Cd View Post
I tried doing the spark test earlier, but I don't have a helper handy.

It's been so long since I had done a spark test that I may be doing it wrong. I just pulled the #4 plug out and cranked it over while having the plug dangling out of the wire. I couldn't see anything, so Ill have to wait till I can find a helper.

I didn't ground the plug when I did the spark test though. I'll research how to do that now.
Just make sure that the threads or hex portion of the plug is touching something metal like the valve cover. You can probably find a way to set the plug down so it'll touch and you can still see it while cranking.
  Reply With Quote
Old 02-19-2011, 07:46 PM   #25 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,105
Thanks: 2,356
Thanked 804 Times in 474 Posts
I just tried the spark test, and as I turned over the car, the thing tried to start.
I put the plug back in and it fired right up.

Great - now I have a ghost in the machine. It starts when it wants to and then quits when it wants to.

Im afraid to even drive the car now for fear that it won't start again.

The car idled perfect with no hiccups at all.
  Reply With Quote
Old 02-19-2011, 07:49 PM   #26 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,741

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,573
Thanked 3,509 Times in 2,196 Posts
On/off failures are often electrical in nature; sputtering is oftentimes fuel related *but not always*. Maybe the new coil has issues too????? Inspect connection tightness, wire integrity, cleanliness (oily grime can short stuff out)...
__________________


  Reply With Quote
Old 02-19-2011, 11:13 PM   #27 (permalink)
Master EcoModder
 
Join Date: Sep 2009
Posts: 5,927
Thanks: 877
Thanked 2,019 Times in 1,302 Posts
Clean your engine to chassis ground connections. Also battery terminals and both of the other ends of the battery cables. Make sure the battery is working properly. It should have enough reserve to turn the headlights on for 20 minutes (with the engine off) and still start the engine and run properly.

regards
Mech

Last edited by user removed; 02-20-2011 at 10:05 AM.. Reason: changed 2 minutes to 20 minutes
  Reply With Quote
Old 02-20-2011, 06:37 AM   #28 (permalink)
EcoModding Lurker
 
Join Date: Oct 2008
Location: Netherlands
Posts: 4

Daihatsu - '05 Daihatsu Cuore osaka
90 day: 48.51 mpg (US)

hch2011 - '11 honda civic hybrid 1.3 elegance
90 day: 39.6 mpg (US)
Thanks: 1
Thanked 2 Times in 2 Posts
I would also check the TDC (top dead center) sensor. Especially if the starting/ not starting of the engine is temperature related.

I've had 2 cars in the past that had a problem with this sensor; one car wouldn't start after a cold night, but started just fine after it had warmed up during the day.

The other car started just fine, but during warm up, after 5 minutes of driving it sometimes just died and wouldn't start anymore. After waiting 5-10 minutes it started again without any problems.

In both cars changing the TDC sensor solved the problem.
  Reply With Quote
The Following User Says Thank You to werner For This Useful Post:
Cd (02-20-2011)
Old 02-20-2011, 10:58 AM   #29 (permalink)
imported Appalachian
 
Join Date: Jan 2010
Location: Asheville, NC
Posts: 70

Yoda - '97 Toyota Corolla Base
90 day: 30.51 mpg (US)

She-Ra - '03 Honda Accord EX
90 day: 22.91 mpg (US)

Thor - '04 Toyota 4Runner SR5
90 day: 18.26 mpg (US)
Thanks: 49
Thanked 3 Times in 3 Posts
I had car start problems this week too. Turned out to be a corroded battery cable. At least it was a cheap and easy fix for a problem with severe symptoms.
  Reply With Quote
Old 02-21-2011, 11:56 AM   #30 (permalink)
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Kc KS
Posts: 148

Dart Lite - '76 Dodge Dart Dart Lite
90 day: 18.34 mpg (US)

Beater..with a Heater - '94 Isuzu Rodeo LS
90 day: 16.19 mpg (US)
Thanks: 4
Thanked 7 Times in 5 Posts
I'm with Old Mech.

I have seen a 1/2 a dozen problems recently, all are traced to poor grounds in the engine compartment. There should be a clean ground from the negative terminal to the body, and one or several grounds from the engine to the body.

__________________
Current MPG driver:
1994 Isuzu Rodeo - Beater with a Heater...
  Reply With Quote
The Following User Says Thank You to Backtobasics For This Useful Post:
Cd (02-21-2011)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com