How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dodgerench Your Own Question

Dodgerench
Dodgerench, ASE Certified Technician
Category: Dodge
Satisfied Customers: 3145
Experience:  30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
4486286
Type Your Dodge Question Here...
Dodgerench is online now
A new question is answered every 9 seconds

Dodge intrepid: disconnect..cam sensor..limp mode..crank sensor

Customer Question

01 dodge intrepid, 2.7, no start, no spark, erratic cam and crank on scan tool, disconnect cam sensor, has spark, runs in limp mode i guess, anybody else come across this, new cam and crank sensor installed. thanks for the help, Mike
Submitted: 5 years ago.
Category: Dodge
Expert:  Dodgerench replied 5 years ago.
Hi Mike, welcome to Just Answer!.

It sounds like your 2.7 might be out-of-time. When you have an in and out sync signal between cam and crank, no spark, no fuel injector delivery, it's very likely the cam and crank sensor signals aren't close enough together to make the PCM happy. Disconnecting the cam sensor solves that to a extent because the conflict is gone at that point and the PCM is programmed to run in limp-in (like you said) using only the crank sensor in this year. Barring major complications, the crank sensor is always going to be in-time.

Timing chains don't skip on their own very often in these engines, so the most common reason for the engine being mis-timed is that work has been done recently. If the timing chains or water pump have been replaced, cylinder head removed... whatever... it's pretty likely that something happened at that time to cause your problem.

I saw an instance at the shop only a few months ago where one of the guys got a timing chain kit (complete with gears) for a 2.7 engine from this same time period and the engine would not start after installation. Bill's a very meticulous guy; it was hard for me to believe he had missed a timing mark somewhere, yet the engine would start and run fine with the cam sensor removed. It turns out that the timing chain package was mis-boxed, having a left side cam gear for an NGC engine... his was an SBEC. These are completely incompatible, with entirely different cam spacings on the gear. If your engine received a Mopar chain kit, I'd be suspicious at this point.

If you're familiar with the amount of vacuum the engine normally produces in your area, start it without the cam sensor and compare that value to what you'd expect. If vacuum is the same, cam timing is spot-on. Lower vacuum (of course) would possibly mean that things aren't quite what they should be.

Last, I'd be slightly suspicious of anything but a Mopar cam sensor if the above descriptions don't fit. My experiences with aftermarket sensors are pretty limited, but I'm seeing problems solved constantly from posts made by techs logged onto iATN (international auto technician's network), which is why I'm including this in my post. It doesn't seem plausible that an aftermarket sensor could be that bad right out of the box, but I see it time and again. If your engine hasn't been apart... and you're using an aftermarket cam sensor... I'd try a factory unit.

Write back if you have any questions, Mike. I'd be glad to help.

Good luck,
Ed

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
< Last | Next >
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Rev. Jerry Baysinger Holts Summit, Mo
  • I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again. Greg Pittsburgh, PA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Jerry Holts Summit, MO
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
 
 
 

Meet The Experts:

 
 
 
  • Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
  • http://ww2.justanswer.com/uploads/MO/MoparCertified/2012-6-7_4142_mechanic.64x64.jpg Mopar Certified's Avatar

    Mopar Certified

    Dodge Technician

    Satisfied Customers:

    5813
    24 Year Chrysler/Dodge Certified Specialist
  • http://ww2.justanswer.com/uploads/jeep10000/2008-9-18_222938_192601.jpg Chris's Avatar

    Chris

    Shop Foreman

    Satisfied Customers:

    4041
    ASE and Chrysler Certified Master Tech
  • http://ww2.justanswer.com/uploads/ke4ich/2009-08-12_212931_DSC02211.JPG moparfl's Avatar

    moparfl

    ASE Certified Technician

    Satisfied Customers:

    3285
    ASE Master Tech Gold level Chrysler Status 30 years dealership exp
  • http://ww2.justanswer.com/uploads/DO/dodgerench/2012-8-1_1142_IMG3173.64x64.JPG Dodgerench's Avatar

    Dodgerench

    ASE Certified Technician

    Satisfied Customers:

    2480
    30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Dodge Mechanic

    Satisfied Customers:

    1870
    30 years experience in Dodge Chrysler and Plymouth
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    1664
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
 
 
 
Chat Now With A Dodge Mechanic
Dodgerench
Dodgerench
Driveability Tech
2610 Satisfied Customers
30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist