...high RPM miss???

[Grandgrandpa]

It may be a coincidence but...my fix came at the same time the Stage 1 PCM's started to ship!

[Harquin]

I too have this boggle.
I went to my local dealer this morning (8-9-03) and found that they do not know of this issue.
So I brought them up to speed on it.
They said they would call Chrysler, and get back to me.
I got the ball rolling on this... but the TSB from Grandgrandpa, is what I need.
Please post it when you get it Grandgrandpa.
Thanks in advance.

Harquin

[romli]

Here it is: TSB# 18-029-03
Date: August 8, 2003
Subject: Slight Engine Misfire Above 5200 RPM

PM me if you need more info.

[Harquin]

quote:Originally posted by romli

Here it is: TSB# 18-029-03
Date: August 8, 2003
Subject: Slight Engine Misfire Above 5200 RPM

Romli... You Rock Bro![8D]
This is what I needed!!!!!!!!

[Grandgrandpa]

I checked with my dealer and the TSB number posted yesterday is not the fix for surging. The TSB given yesterday I believe is for the clean up of the waste gate. The TSB to fix the 5000-6000 RPM surge will include a PCM replacement. So ask the dealer if he is replacing the PCM.

[romli]

Here's a little more info for the non-believer(s)

TSB# 18-029-03
Date: August 8, 2003

SUBJECT: Slight Engine Mis-Fire Above 5200 rpm

OVERVIEW: This bulletin involves replacing the Powertrain Control Module (PCM).

MODELS: 2003 (PT) Chrysler PT Cruiser

NOTE: This bulletin applies to vehicles built prior to January 22, 2003 (MDH0122xx) equipped with a 2.4L Turbo engine and manual transmission or prior to March 18, 2003 (MDH 0318xx) for vehicles equipped with a 2.4L Turbo engine and automatic transmission.

SYMPTOM/CONDITION: Vehicle operator may describe a random or slight engine mis-fire when operating vehicle above 5200 rpm.

[don668]

Thats correct, have mine on order.

Don

[Grandgrandpa]

I stand corrected...sorry. The PCM replacement makes the car drive the way it should.

[Grandgrandpa]

It's hard to say...it's very smooth and the car does drive different but I had the high RPM problem since new(3100 miles now)so I am hoping this is normal. The PCM fix has finally given me a consistent test bed. While searching for the RPM mis-fire the one thing that produced a noticeable change was the re-gapping of the plugs to .040. I will try the 7440 DPP Champions because of that experience. I will try them at the recommended .050 gap then down to .040. I have priced the plugs at a couple of stores and most sell them for $4.29 each.