1989 Dakota V6 Missing/Hesitation
#1
1989 Dakota V6 Missing/Hesitation
I'm servicing my friend's 1989 truck for her since she's letting me borrow it and I'm doing some routine maintenance. Spark plugs and wires were replaced last year and all fluid levels are good to go. It was running great until the other day when it just started missing at idle and acceleration. I re-checked all the plug wires and plugs and they are in great condition. I even replaced a cracked PCV hose and reconnected another one as well that was loose, but it didn't help. It appears to be like the spark and/or fuel is just cutting out. The spark plugs were all fine (no signs of fuel saturation due to missing spark) and I'm just not sure what to do/check next.
Under part throttle acceleration it misses and bucks pretty badly at times, but when I floor it while it's happening, it appears to go away.
Any suggestions? I'd really like to fix this for her. Thanks!
Under part throttle acceleration it misses and bucks pretty badly at times, but when I floor it while it's happening, it appears to go away.
Any suggestions? I'd really like to fix this for her. Thanks!
#2
Could be an EGR going, check the codes see what pops up. when the EGR gave out on my '95, it felt like it was losing fuel, but a simple code read put that fear to rest, EGR will be code 32, I believe the '89's will let you read 'em. If not the EGR, could be the fuel pump, it's common on these to go out, or injector/carb issue (not sure if '89 is carbed or TBI)
#4
You can find this link in the FAQ in this section. https://dodgeforum.com/forum/general-tech/8717-service-engine-codes-for-obd-engines.html
Before you fix anything dubble and tripple check it. Disconnect the battery, for a few mins. then reconnect. This will rest the comp. Then run the truck up to temp and see which ones come back on.
You have code 12, 34, 33, 15, 55
12 Direct battery input to PCM was disconnected within the last 50 key-on cycle(Normal)
34 Speed control Solenoid circuits
33 A/C clutch relay circuit
15 No vehicle speed sensor signal
55 End of error messages
Before you fix anything dubble and tripple check it. Disconnect the battery, for a few mins. then reconnect. This will rest the comp. Then run the truck up to temp and see which ones come back on.
You have code 12, 34, 33, 15, 55
12 Direct battery input to PCM was disconnected within the last 50 key-on cycle(Normal)
34 Speed control Solenoid circuits
33 A/C clutch relay circuit
15 No vehicle speed sensor signal
55 End of error messages
#5
#6
Any ideas? I would lean toward it being the speed sensor since there are two error messages for those. However, how would that make the car miss at idle? That doesn't make sense to me. Or, even if it was the AC clutch relay circuit. Nothing is adding up here to the car missing, hesitating, and randomly cutting out.
#7
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