Dodge

Dodge Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

1989 Dodge Caravan: check engine light..000 miles..runs fine..injector…

Customer Question
Why does check engine light...
Why does check engine light appear and engine start running rough on a hot start (1989 Dodge Caravan with 3.0 engine, 112,000 miles)? It runs fine on a cold start or after sitting for at least 2 hours. Diagnostic code shows fault #26 (injector not reaching peak voltage). I replaced coil, temp sensor, dis cap and rotor, and cleaned battery, SMEC 14-pin connectors and relays on left fender well. Should I now test injectors with a NOID light?
Submitted: 8 years ago.Category: Dodge
Show More
Show Less
Ask Your Own Dodge Question
Answered in 12 minutes by:
6/27/2010
Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
Randall C
Randall C, ASE Master Technician
Category: Dodge
Satisfied Customers: 13,440
Experience: ASE Master Tech, 32 years Diag/Electrical Specialist
Verified
Hello, is the engine misfiring or just setting the code
Ask Your Own Dodge Question
Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
sorry, missed your description of running. Let me check some things back shortly
Ask Your Own Dodge Question
Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
Yes, you should first check with noid light or at least with testlight for blinking light while cranking. You do need to do this test when problem is happening say when hot. In most cases when this code sets, it indicates a bad injector or one shorted. The code refers to injectors 1,2 or 3. . Check each injector plug close. be sure on tight and clean. Run the noid light test. If light blinks on all 3 wjhen hot, then you could have one of the three bad injectors. The problem is wiould be guess on your end as a shop has a scan tool tom activate each injector and run tests on it. Without activating each individually, We can only guees on which of the three is the problem. You can try usuing a screwdriver like stethescope by placing the tip of driver on injectors 1,2 and 3 and hold handle to your ear. You should hear even, noriceable clicking from eac while cranking or running. Again, need to do when problem happens.If one does not click or sounds different, this is likely the bad injector.. I suspect when engine is hot, one of the injectors is not operating correctly and putting mnore fuel in the engine cauing the poor running when hot. You can pull plus 1,2,3 and see if any of them are balcker in color indicating a rich condition ont hat cylinder. If all tests I mention are ok, then the last step would possible be a bad injector driver circuit from PCM controlling one of the 3 injectors mentioned
Ask Your Own Dodge Question
Customer reply replied 8 years ago
I checked the #2 sparkplug and it looked clean. Why would a malfunctioning injector cause a rich condition if it weren't opening correctly? Seems like that plug would get less fuel, not more.
Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
Not always true. A bad or patially plugged injector can hang the open or partially open position. When an injector is failing or has failed, it does not always go to 1005 closed position
Ask Your Own Dodge Question
Customer reply replied 8 years ago

Since the rear spark plugs and injectors are a real pain to get to, they would be hard to test with a NOID light when the engine starts misfiring. I teted injector #6 with NOID light as a sample tonight -- it seemed to be firing normally but it was too hard to test any others because of engine heat and difficult access.

 

What do you think of this idea: what if I ran a heat gun over the SMEC (computer) area when COLD (i.e running normally) to see if I could cause the check engine light to appear and the engine to misfire? If it did, wouldn't that indicate that the computer was causing the injector to misbehave when hot, rather than the individual injector itself?

Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
It is possible. I would not get it too hot, just warm.If you do this and get it a little warm, yes, this would indicate an injector driver breakdown within the computer
Ask Your Own Dodge Question
Customer reply replied 8 years ago
Followup: I applied a heat gun to the PCM when cold but couldn't trick the check-engine light into appearing. I then drove it a few miles, shut it off and waited for 10 minutes and sure enough the light appeared and the engine misfired. I listened to the injectors through a hose while it was still misbehaving but it sounded like all of them were clicking at about the same rate so I didn't bother testing resistance or using NOID lights. I then changed plugs (all had been burning clean) and wires and swapped the position of the 4 relays. Oddly enough, I haven't had a recurrence of the problem in the last 3 days, and trouble code 26 has disappeared (after disconnecting battery to reset). I guess I should be satisfied but I'm mystified as to what I may have done to solve the problem. Any thoughts?
Dodge Mechanic: Randall C, ASE Master Technician replied 8 years ago
This can be a togh code to trace. You could have easily done something to affect it. It sure sounds like temp related etc.. At least you know what you need to check/tect if it keeps coming back in future. You could still have bad pcm or injector. tough call
Ask Your Own Dodge Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a dodge mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Randall C Your Own Question
Randall C
Randall C
Randall C, ASE Master Technician
Category: Dodge
Satisfied Customers: 13,440
13,440 Satisfied Customers
Experience: ASE Master Tech, 32 years Diag/Electrical Specialist

Randall C is online now

A new question is answered every 9 seconds

How JustAnswer works:

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

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 WHITTAKERUSA

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 BaysingerHolts 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.

GregPittsburgh, 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!

JerryHolts 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.

StanSayre, 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!!!!

AlexLos Angeles, CA

< Previous | Next >

Meet the Experts:

Jerry

Jerry

Master Mechanic

1,754 satisfied customers

ASE Master tech, 30 years exp. troubleshooter, driveability tech

Chris

Chris

Shop Foreman

7,095 satisfied customers

Dodge/Cummins and Chrysler Certified Master Tech

Mopar Certified

Mopar Certified

Dodge Technician

6,073 satisfied customers

24 Year Chrysler/Dodge Certified Specialist

moparfl

moparfl

ASE Certified Technician

3,292 satisfied customers

ASE Master Tech Gold level Chrysler Status 30 years dealership exp

Dodgerench

Dodgerench

ASE Certified Technician

2,822 satisfied customers

30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist

Tim Mohr

Tim Mohr

ASE MASTER TECH

2,363 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Don - Mo Lurch

Don - Mo Lurch

Aftermarket & Factory Electronics

1,593 satisfied customers

Cert. Dodge & Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years

< Previous | Next >

Related Dodge Questions
dodge ram w150: I have a 1989 w 150 318 dodge ram with a wiring
I have a 1989 w 150 318 dodge ram with a wiring problem . right now we have power to coil on both +and - side but no spark out of coil we also have power to asd but nothing happens when you turn on ig… read more
Themaxview
Themaxview
Vocational, Technical or Trade Scho
20 satisfied customers
Dodge Caravan: On a 2003 Dodge caravan with a 3.3l engine -
On a 2003 Dodge caravan with a 3.3l engine - how do I test the signal wire for the #6 injector? Driver wire tested ok.… read more
Donald Knight
Donald Knight
Shop Manager/Technican
Associate Degree
527 satisfied customers
Dodge Stratus ES: 97 dodge stratus es. 2.5 lit.cranks fine
97 dodge stratus es. 2.5 lit. cranks fine wont fire. spray a bit of starting fluid starts and runs great or if i hook up battery charger and set to 40 amps starts and runs great without starting fluid… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1989 dodge grand caravan: warms..dies..it cools down (not overheating)
1989 dodge grand caravan starts and runs great until it warms up. Then it dies and gets no spark. Once it cools down (not overheating), it starts and runs again until it gets to operating temp, then s… read more
rpmdiag
rpmdiag
High school
7,881 satisfied customers
1998 Dodge: cylinder #3 misfire..rough running..complete tune
What is the cause of a cylinder #3 misfire with rough running right after you start the engine on a 1998 Dodge 1500. It had a complete tune up and di id again exactly 2 weeks later.… read more
rpmdiag
rpmdiag
High school
7,881 satisfied customers
1989 dodge: 250 pick up.I need wiring diagrams..computer.The injectors
I have a 1989 dodge ram 250 pick up.I need wiring diagrams for the computer.The injectors are pooring fuel in the motor.I believe its a computer vproblem .Can you offer me the diagrams/. and answers?.… read more
jazzmaster
jazzmaster
LEAD AUTO TECH
Vocational, Technical or Trade Scho
1,124 satisfied customers
1989 Dodge Grand Caravan: van runs GREAT..warms..surging..1000 rpm
I have a 1989 Dodge Grand Caravan 3.0,auto,a/c with 130k miles. This van runs GREAT until it warms up, then will not idle and dies. It seems to start surging 200 rpm's then dies when below 1000 rpm. I… read more
Jettadan1
Jettadan1
Lead mech
Some college
1,421 satisfied customers
Dodge grand caravan: tune..spark plugs..ignition coil..module
I have a Dodge grand caravan, 2002, 3.8 engine. It was running rough like it needed a tune up...so i changed the spark plugs (gapped properly)...wires and ignition coil. It still ran rough, so i scann… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1988 Dodge Caravan: few minutes..fuel problem..wont start..fuel rail
1988 Dodge Caravan 3.0 - Engine would run for a while then stall and not start until much later or the next day. Now it hardly starts. When it does it runs for a few minutes then stalls like its runni… read more
garrtim
garrtim
SERVICE MANAGER
1,831 satisfied customers
88 dodge dakota: fuel pump..cranking..injectors and it stalls
i have an 88 dodge dakota 3.9, new fuel pump and fuel cycles to injectors and injectors shoot fuel only during cranking over mode, once it starts from this fuel it runs for 2 seconds then fuel flow st… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1987 Dodge Caravan: what does the fault code , Peak injector current
On a 1987 Dodge Caravan 3.0 what does the fault code , Peak injector current has not been reached" mean?… read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
1993 dodge caravan: 3.0 van..starts running..running rough..dies
i have a 1993 dodge caravan 3.0 van will start when cold it runs for 1 or 2 min. then starts running rough and eventually dies. getting plenty of fuel pressure put a new map sensor on and it started b… read more
Petek
Petek
Automotive Technician
Bachelor's Degree
156 satisfied customers
1988 Caravan: fuel injector..engine runs..firing..scan tool
Potential fuel injector partial failure on 1988 Caravan 3.0L. Temperature related - engine runs smoothly when cold, but after reaching operating temp, one cylinder stops firing. I checked the DTCs and… read more
sunvalley brian
sunvalley brian
Auto Technition
Vocational, Technical or Trade Scho
324 satisfied customers
Caravan SE: few weeks the maint Required light came on..limp mode
I just acquired a 1992 Dodge Crand Caravan SE (3.3) w/83000 miles. After a few weeks the "Maint Required" light came on. A few days later the transmission got stuck in limp mode. I replaced the speed … read more
Themaxview
Themaxview
Vocational, Technical or Trade Scho
20 satisfied customers
1989 Dodge Ramcharger: carbon..spark plug wires / cap..ignition coil
I own a 1989 Dodge Ramcharger 318 [5.2] engine that has been fouling up spark plugs with very havy carbon deposits. I replaced the plugs / spark plug wires / cap / rotor / ignition coil. I have a heal… read more
crossfire
crossfire
Vocational, Technical or Trade Scho
74 satisfied customers
Dodge caravan: 3.0...a sudden it is idoling real rough, black smoke
i have a dodge caravan with 3.0. all of a sudden it is idoling real rough, black smoke. loss power light comes on and it smoothes out. when the power loss light goes off it runs rough again. help… read more
Chrysler man
Chrysler man
Mastertech
Vocational, Technical or Trade Scho
2,650 satisfied customers
1989 dodge caravan: cooler weather..regulator..coil , fuel filter..psi
I have a 1989 dodge caravan 2.5 ,in cooler weather after the car sits over night I start it , and it starts right up and runs for 30 to 60 seconds and kills this keeps up until the car warms up comple… read more
marc
marc
fleet supervisor
Vocational, Technical or Trade Scho
1,140 satisfied customers
Dodge caravan: 1995 the engine stopped..crank..wires cap..rotor
while driving dodge caravan 1995 the engine stopped. I could crank it over but it will not start? I put in new wires cap and rotor and plugs still not start. Timing belt is not broken either? What cou… read more
marc
marc
fleet supervisor
Vocational, Technical or Trade Scho
1,140 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x